fix: add ffmpeg to API runtime image for cover fallback

PR #1360 introduced FFmpeg-based frame extraction as fallback for cover generation, but the API Docker image did not include FFmpeg binary. Worker image already has it via worker-base-runtime, but API image only had libpq5 in its runtime stage. This caused subprocess calls to fail with FileNotFoundError when the cover generation tried to use _extract_frames_with_ffmpeg fallback. Fix: add ffmpeg to apt-get install in runtime stage of api.Dockerfile.
2026-08-13 21:25:30 +08:00
208 changed files with 9661 additions and 33243 deletions
@@ -1,84 +0,0 @@
-name: API Base Image Build
-
-on:
-  push:
-    branches:
-      - develop
-      - main
-    paths:
-      - 'requirements-base.txt'
-      - 'requirements.txt'
-      - 'infra/docker/api-base.Dockerfile'
-  workflow_dispatch:
-
-jobs:
-  build-api-base:
-    name: Build API Base Image
-    runs-on: runtime-builder
-    timeout-minutes: 45
-    steps:
-    - name: Checkout code
-      shell: sh
-      env:
-        GITHUB_TOKEN: ${{ github.token }}
-      run: |
-        curl -sH "Authorization: token $GITHUB_TOKEN" \
-          "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/step_checkout.sh?ref=${GITHUB_SHA}" \
-          | bash
-
-    - name: Docker login to Registry
-      shell: sh
-      env:
-        ACR_USERNAME: ${{ secrets.ACR_USERNAME }}
-        ACR_PASSWORD: ${{ secrets.ACR_PASSWORD }}
-        GITEA_REGISTRY_USER: xiaoxia
-        GITEA_REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
-      run: |
-        set -eu
-        for i in 1 2 3; do
-          echo "=== Docker login 尝试 $i/3 ==="
-          if printf '%s' "${ACR_PASSWORD}" | docker login xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com -u "${ACR_USERNAME}" --password-stdin \
-              && docker login git.xiaoxiajianji.com -u "${GITEA_REGISTRY_USER}" -p "${GITEA_REGISTRY_TOKEN}"; then
-            echo "✅ Docker login successful"
-            break
-          fi
-          echo "❌ Docker login 失败（尝试 $i/3），5s 后重试..."
-          sleep 5
-        done
-
-    - name: Build and push API base image
-      shell: sh
-      run: |
-        set -eu
-        ACR_IMAGE="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji/saas-api-base:latest"
-        GITEA_IMAGE="git.xiaoxiajianji.com/xiaoxia-saas/saas-api-base:latest"
-
-        echo "=== Building API base image ==="
-
-        # 使用普通 docker build（单平台不需要 buildx）
-        docker build \
-          -f infra/docker/api-base.Dockerfile \
-          -t "${ACR_IMAGE}" \
-          .
-
-        echo ""
-        echo "✅ Image built successfully"
-
-        # 推送到 ACR
-        echo "=== Pushing to ACR ==="
-        docker push "${ACR_IMAGE}"
-        echo "✅ Pushed to ACR"
-
-        # 打标签并推送到 Gitea Packages 作为备份
-        echo "=== Pushing to Gitea Packages ==="
-        docker tag "${ACR_IMAGE}" "${GITEA_IMAGE}"
-        docker push "${GITEA_IMAGE}" || echo "⚠️ Gitea Packages push failed (non-fatal)"
-        echo "✅ Gitea backup push completed"
-
-    - name: Cleanup
-      if: always()
-      shell: sh
-      run: |
-        ACR_IMAGE="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji/saas-api-base:latest"
-        docker rmi "${ACR_IMAGE}" 2>/dev/null || true
-        echo "Cleanup done"
@@ -633,25 +633,58 @@ jobs:
          echo "Docker login failed ($i/3), retrying in 5s..."
          sleep 5
        done
-    - name: Pre-build worker base image (fallback if not exist)
+    - name: Pre-build worker base images (fallback if not exist)
      if: matrix.service == 'worker'
      id: prebuild
      shell: sh
      run: |
        set -eu
-        REGISTRY="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji"
-        BASE_IMAGE="${REGISTRY}/saas-worker-base:latest"
+        REGISTRY="git.xiaoxiajianji.com/xiaoxia-saas"
+        BASE_BUILDER="${REGISTRY}/worker-base-builder:latest"
+        BASE_RUNTIME="${REGISTRY}/worker-base-runtime:latest"
        
        # 尝试拉取基础镜像
-        echo "检查 Worker 基础镜像..."
-        if docker pull "$BASE_IMAGE" 2>/dev/null; then
-          echo "✅ 基础镜像已存在"
+        echo "检查基础镜像..."
+        if docker pull "$BASE_BUILDER" 2>/dev/null && docker pull "$BASE_RUNTIME" 2>/dev/null; then
+          echo "基础镜像已存在，使用远程镜像"
          echo "fallback=false" >> $GITHUB_OUTPUT
        else
-          echo "⚠️ 基础镜像不存在，本地构建（fallback模式）..."
-          docker build -f infra/docker/worker-base.Dockerfile -t "$BASE_IMAGE" .
+          echo "基础镜像不存在，本地构建（fallback模式）..."
+          
+          # 尝试用buildx构建，失败则回退到普通docker build（DooD模式下buildx builder偶发崩溃）
+          BUILDER_NAME="ci-pr-builder-${GITHUB_RUN_ID:-local}"
+          BUILDX_AVAILABLE=true
+          if ! docker buildx create --use --name "$BUILDER_NAME" --driver docker-container > /dev/null 2>&1; then
+            BUILDX_AVAILABLE=false
+          fi
+          if [ "$BUILDX_AVAILABLE" = true ] && ! docker buildx inspect --bootstrap > /dev/null 2>&1; then
+            BUILDX_AVAILABLE=false
+            docker buildx rm "$BUILDER_NAME" > /dev/null 2>&1 || true
+          fi
+          
+          build_base() {
+            local df="$1"
+            local tag="$2"
+            local name="$3"
+            if [ "$BUILDX_AVAILABLE" = true ]; then
+              echo "构建 $name（buildx）..."
+              if docker buildx build --load -f "$df" -t "$tag" . > /dev/null 2>&1; then
+                echo "$name 构建成功"
+                return 0
+              fi
+              echo "buildx失败，回退到普通docker build"
+              BUILDX_AVAILABLE=false
+              docker buildx rm "$BUILDER_NAME" > /dev/null 2>&1 || true
+            fi
+            echo "构建 $name（docker build）..."
+            docker build -f "$df" -t "$tag" .
+          }
+          
+          build_base infra/docker/worker-base-builder.Dockerfile "$BASE_BUILDER" "worker-base-builder"
+          build_base infra/docker/worker-base-runtime.Dockerfile "$BASE_RUNTIME" "worker-base-runtime"
+          
          echo "fallback=true" >> $GITHUB_OUTPUT
-          echo "✅ Worker 基础镜像本地构建完成"
+          echo "基础镜像本地构建完成"
        fi

    - name: Build PR image (verify only, no push)
@@ -667,15 +700,15 @@ jobs:
          EXTRA_BUILD_ARGS="$EXTRA_BUILD_ARGS NGINX_CONF=infra/docker/nginx-staging.conf"
        fi

-        # Worker: 始终用普通docker build（基础镜像已预装全部依赖，无需buildx）
-        if [ "${{ matrix.service }}" = "worker" ]; then
-          echo "Worker: 使用普通docker build"
+        # Worker fallback模式：基础镜像本地已构建，用普通docker build绕过buildx
+        if [ "${{ matrix.service }}" = "worker" ] && [ "${{ steps.prebuild.outputs.fallback }}" = "true" ]; then
+          echo "Fallback模式：用普通docker build（基础镜像本地已构建）"
          BUILD_ARG_STR=""
          for arg in $EXTRA_BUILD_ARGS; do
            BUILD_ARG_STR="$BUILD_ARG_STR --build-arg $arg"
          done
          docker build -f ${{ matrix.dockerfile }} -t "${IMAGE_TAG}" $BUILD_ARG_STR .
-          echo "PR Build successful (worker, no buildx)"
+          echo "Fallback PR Build successful"
          exit 0
        fi

@@ -798,7 +831,6 @@ jobs:
        fi

    - name: Setup buildx builder
-      if: matrix.service != 'worker'
      shell: sh
      run: |
        set -eu
@@ -811,64 +843,41 @@ jobs:
        fi
        docker buildx inspect --bootstrap

-    - name: Pre-build worker base image (fallback if not exist)
-      if: matrix.service == 'worker'
-      shell: sh
-      run: |
-        set -eu
-        REGISTRY="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji"
-        BASE_IMAGE="${REGISTRY}/saas-worker-base:latest"
-
-        echo "检查 Worker 基础镜像..."
-        if docker pull "$BASE_IMAGE" 2>/dev/null; then
-          echo "✅ 基础镜像已存在"
-        else
-          echo "⚠️ 基础镜像不存在，本地构建（fallback）..."
-          docker build -f infra/docker/worker-base.Dockerfile -t "$BASE_IMAGE" .
-          echo "✅ Worker 基础镜像本地构建完成"
-        fi
-
-    - name: Build and push ${{ matrix.service_display }} image
+    - name: Build and push ${{ matrix.service_display }} image (with retry)
      shell: sh
      run: |
        set -eu
        REGISTRY="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji"
        IMAGE_TAG="${REGISTRY}/${{ matrix.image_name }}:${GITHUB_SHA}"
+        CACHE_REF="${REGISTRY}/${{ matrix.cache_name }}:${GITHUB_REF_NAME}"

-        if [ "${{ matrix.service }}" = "worker" ]; then
-          # Worker: plain docker build（基础镜像已预装全部依赖，无需 buildx）
-          echo "=== Worker: plain docker build ==="
-          docker build -f ${{ matrix.dockerfile }} -t "${IMAGE_TAG}" --build-arg APP_VERSION="${GITHUB_SHA}" .
-          docker push "${IMAGE_TAG}"
-          echo "✅ Worker image pushed: ${IMAGE_TAG}"
-        else
-          # API/Web: buildx with registry cache
-          CACHE_REF="${REGISTRY}/${{ matrix.cache_name }}:${GITHUB_REF_NAME}"
-          EXTRA_BUILD_ARGS="APP_VERSION=\"${GITHUB_SHA}\""
-          if [ "${{ matrix.service }}" = "web" ]; then
-            EXTRA_BUILD_ARGS="$EXTRA_BUILD_ARGS NGINX_CONF=infra/docker/nginx-staging.conf"
-          fi
-
-          NO_CACHE_FLAG=""
-          for i in 1 2 3; do
-            echo "=== Docker build 尝试 $i/3 ==="
-            if bash scripts/ci/docker_build_push.sh $NO_CACHE_FLAG ${{ matrix.dockerfile }} "${IMAGE_TAG}" "${CACHE_REF}" $EXTRA_BUILD_ARGS; then
-              echo "✅ Docker build 成功"
-              break
-            fi
-            echo "❌ Docker build 失败（尝试 $i/3）"
-            [ $i -eq 3 ] && exit 1
-            sleep 10
-            if [ $i -eq 2 ]; then
-              NO_CACHE_FLAG="--no-cache"
-              echo "下次重试将使用 --no-cache"
-            fi
-          done
-
-          echo "${{ matrix.service_display }} image pushed: ${IMAGE_TAG}"
+        EXTRA_BUILD_ARGS="APP_VERSION=\"${GITHUB_SHA}\""
+        if [ "${{ matrix.service }}" = "web" ]; then
+          EXTRA_BUILD_ARGS="$EXTRA_BUILD_ARGS NGINX_CONF=infra/docker/nginx-staging.conf"
        fi
+
+        # Docker build 带重试：失败自动重试2次，第2次重试加--no-cache
+        NO_CACHE_FLAG=""
+        for i in 1 2 3; do
+          echo "=== Docker build 尝试 $i/3 ==="
+          if bash scripts/ci/docker_build_push.sh $NO_CACHE_FLAG ${{ matrix.dockerfile }} "${IMAGE_TAG}" "${CACHE_REF}" $EXTRA_BUILD_ARGS; then
+            echo "✅ Docker build 成功"
+            break
+          fi
+          echo "❌ Docker build 失败（尝试 $i/3）"
+          [ $i -eq 3 ] && exit 1
+          sleep 10
+          # 第2次重试使用 --no-cache
+          if [ $i -eq 2 ]; then
+            NO_CACHE_FLAG="--no-cache"
+            echo "下次重试将使用 --no-cache"
+          fi
+        done
+
+        echo
+        echo "${{ matrix.service_display }} image pushed: ${IMAGE_TAG}"
    - name: Cleanup buildx builder
-      if: matrix.service != 'worker' && always()
+      if: always()
      shell: sh
      run: |
        docker buildx rm ci-builder-${GITHUB_RUN_ID}-${GITHUB_JOB}-${{ matrix.cache_name }} 2>/dev/null || true
@@ -7,25 +7,35 @@ on:
      - main
    paths:
      - 'requirements-base.txt'
-      - 'requirements.txt'
      - 'requirements-worker.txt'
-      - 'infra/docker/worker-base.Dockerfile'
-  workflow_dispatch:
+      - 'infra/docker/worker-base-builder.Dockerfile'
+      - 'infra/docker/worker-base-runtime.Dockerfile'
+  workflow_dispatch:  # 支持手动触发

 jobs:
  build-worker-base:
-    name: Build Worker Base Image
+    name: Build Worker Base Images
    runs-on: runtime-builder
-    timeout-minutes: 45
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - name: builder
+          dockerfile: infra/docker/worker-base-builder.Dockerfile
+          image_name: worker-base-builder
+          cache_name: worker-base-builder-cache
+        - name: runtime
+          dockerfile: infra/docker/worker-base-runtime.Dockerfile
+          image_name: worker-base-runtime
+          cache_name: worker-base-runtime-cache
    steps:
    - name: Checkout code
      shell: sh
      env:
        GITHUB_TOKEN: ${{ github.token }}
      run: |
-        curl -sH "Authorization: token $GITHUB_TOKEN" \
-          "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/step_checkout.sh?ref=${GITHUB_SHA}" \
-          | bash
+        curl -sH "Authorization: token $GITHUB_TOKEN"           "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/raw/scripts/ci/step_checkout.sh?ref=${GITHUB_SHA}"           | bash

    - name: Docker login to Registry
      shell: sh
@@ -38,8 +48,7 @@ jobs:
        set -eu
        for i in 1 2 3; do
          echo "=== Docker login 尝试 $i/3 ==="
-          if printf '%s' "${ACR_PASSWORD}" | docker login xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com -u "${ACR_USERNAME}" --password-stdin \
-              && docker login git.xiaoxiajianji.com -u "${GITEA_REGISTRY_USER}" -p "${GITEA_REGISTRY_TOKEN}"; then
+          if printf '%s' "${ACR_PASSWORD}" | docker login xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com -u "${ACR_USERNAME}" --password-stdin              && docker login git.xiaoxiajianji.com -u "${GITEA_REGISTRY_USER}" -p "${GITEA_REGISTRY_TOKEN}"; then
            echo "✅ Docker login successful"
            break
          fi
@@ -47,40 +56,48 @@ jobs:
          sleep 5
        done

-    - name: Build and push Worker base image
+    - name: Setup buildx builder
      shell: sh
      run: |
        set -eu
-        ACR_IMAGE="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji/saas-worker-base:latest"
-        GITEA_IMAGE="git.xiaoxiajianji.com/xiaoxia-saas/saas-worker-base:latest"
-
-        echo "=== Building Worker base image ==="
-
-        # 使用普通 docker build（单平台不需要 buildx）
-        docker build \
-          -f infra/docker/worker-base.Dockerfile \
-          -t "${ACR_IMAGE}" \
-          .
+        BUILDER_NAME="ci-builder-${GITHUB_RUN_ID}-${{ matrix.name }}"
+        if ! docker buildx inspect "$BUILDER_NAME" > /dev/null 2>&1; then
+          docker buildx create --use --name "$BUILDER_NAME" --driver docker-container
+          echo "Created $BUILDER_NAME"
+        else
+          docker buildx use "$BUILDER_NAME"
+          echo "Using existing $BUILDER_NAME"
+        fi
+        docker buildx inspect --bootstrap

+    - name: Build and push base image
+      shell: sh
+      run: |
+        set -eu
+        REGISTRY="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji"
+        IMAGE_TAG="${REGISTRY}/${{ matrix.image_name }}:latest"
+        SAFE_REF_NAME=$(echo "${GITHUB_REF_NAME}" | tr '/' '-')
+        CACHE_REF="${REGISTRY}/${{ matrix.cache_name }}:${SAFE_REF_NAME}"
+        
+        echo "=== Building ${{ matrix.name }} base image ==="
+        echo "Image: ${IMAGE_TAG}"
+        echo "Cache: ${CACHE_REF}"
+        
+        # 用通用构建脚本
+        bash scripts/ci/docker_build_push.sh           ${{ matrix.dockerfile }}           "${IMAGE_TAG}"           "${CACHE_REF}"
+        
+        # 同时推送到 Gitea Packages 作为备份（可选）
+        GITEA_IMAGE="git.xiaoxiajianji.com/xiaoxia-saas/${{ matrix.image_name }}:latest"
+        docker tag "${IMAGE_TAG}" "${GITEA_IMAGE}"
+        docker push "${GITEA_IMAGE}" || echo "Gitea Packages push failed (non-fatal)"
+        
        echo ""
-        echo "✅ Image built successfully"
+        echo "✅ ${{ matrix.name }} base image built and pushed"

-        # 推送到 ACR
-        echo "=== Pushing to ACR ==="
-        docker push "${ACR_IMAGE}"
-        echo "✅ Pushed to ACR"
-
-        # 打标签并推送到 Gitea Packages 作为备份
-        echo "=== Pushing to Gitea Packages ==="
-        docker tag "${ACR_IMAGE}" "${GITEA_IMAGE}"
-        docker push "${GITEA_IMAGE}" || echo "⚠️ Gitea Packages push failed (non-fatal)"
-        echo "✅ Gitea backup push completed"
-
-    - name: Cleanup
+    - name: Cleanup buildx builder
      if: always()
      shell: sh
      run: |
-        ACR_IMAGE="xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji/saas-worker-base:latest"
-        docker rmi "${ACR_IMAGE}" 2>/dev/null || true
-        docker image prune -f 2>/dev/null || true
-        echo "Cleanup done"
+        docker buildx rm "ci-builder-${GITHUB_RUN_ID}-${{ matrix.name }}" 2>/dev/null || true
+        docker buildx prune -f 2>/dev/null || true
+        echo "Builder cleanup done"
@@ -10,6 +10,8 @@ Changes:
 3. config 为 JSON 字段，存储封面配置信息
 """

+import json
+
 import sqlalchemy as sa

 from alembic import context, op
@@ -71,7 +73,7 @@ def upgrade() -> None:
                name=name,
                thumbnail_url="",
                is_system=True,
-                config=config,
+                config=json.dumps(config),
                created_at=sa.func.now(),
                updated_at=sa.func.now(),
            )
@@ -1,39 +0,0 @@
-"""修复 cover_templates.config 双重序列化
-
-Revision ID: 056_fix_cover_templates_config
-Revises: 055_cover_templates
-Create Date: 2026-08-13
-
-问题: 055 迁移 seed 数据时 json.dumps(config) 导致 config 被双重序列化为 JSON 字符串
-例如 "{}"（字符串）而不是 {}（对象），导致 Pydantic CoverTemplateResponse 校验失败 500。
-
-修复: 从 JSON 字符串中提取文本值，再 cast 回 json 对象类型。
-"""
-
-import sqlalchemy as sa
-
-from alembic import op
-
-revision = "056_fix_cover_templates_config"
-down_revision = "055_cover_templates"
-branch_labels = None
-depends_on = None
-
-
-def upgrade() -> None:
-    conn = op.get_bind()
-
-    # PostgreSQL: 从 JSON string scalar 中提取文本内容，cast 为 json object
-    # 例如: JSON string "{}" -> text "{}" -> JSON object {}
-    if conn.dialect.name == "postgresql":
-        conn.execute(
-            sa.text(
-                "UPDATE cover_templates SET config = (config#>>'{}')::json "
-                "WHERE jsonb_typeof(config::jsonb) = 'string'"
-            )
-        )
-
-
-def downgrade() -> None:
-    # No safe rollback — the original data was incorrect
-    pass
@@ -1,26 +0,0 @@
-"""Add title_config to generation_tasks
-
-Revision ID: 057_title_config
-Revises: 056_fix_cover_templates_config
-Create Date: 2026-08-23
-"""
-
-import sqlalchemy as sa
-
-from alembic import op
-
-revision = "057_title_config"
-down_revision = "056_fix_cover_templates_config"
-branch_labels = None
-depends_on = None
-
-
-def upgrade() -> None:
-    op.add_column(
-        "generation_tasks",
-        sa.Column("title_config", sa.JSON(), nullable=False, server_default="{}"),
-    )
-
-
-def downgrade() -> None:
-    op.drop_column("generation_tasks", "title_config")
@@ -1,5 +1,5 @@
 import logging
-from typing import Any, List, Optional
+from typing import Any, Optional

 from app.api.routes._helpers import check_project_access, format_utc_datetime
 from app.auth import AuthenticatedUser, get_current_user
@@ -14,10 +14,10 @@ from app.schemas.asset import (
    AssetResponse,
    BatchClassifyRequest,
    BatchDeleteRequest,
-    BatchGetRequest,
    BatchMarkRequest,
    BatchOperationResponse,
    BatchTagRequest,
+    CreateAssetRequest,
    ListAssetsResponse,
    SmartMatchItem,
    SmartMatchRequest,
@@ -28,6 +28,11 @@ from app.schemas.asset import (
 from app.schemas.tag import TagAssetsRequest
 from fastapi import APIRouter, Depends, HTTPException, Query, Response

+from packages.application import (
+    CreateAssetCommand,
+    CreateAssetUseCase,
+)
+from packages.domain import AssetStatus, ClassificationStatus
 from packages.domain.smart_match import smart_select_assets

 logger = logging.getLogger(__name__)
@@ -365,18 +370,6 @@ def update_asset_review_status(
    return _to_asset_response(updated)


-@router.post("/batch", response_model=List[AssetResponse])
-def batch_get_assets(
-    request: BatchGetRequest,
-    authenticated_user: AuthenticatedUser = Depends(get_current_user),
-    asset_repository: Any = Depends(get_asset_repository),
-) -> list[AssetResponse]:
-    """批量获取素材详情（根据 ID 列表）。"""
-    items = asset_repository.find_by_ids(request.ids)
-    storage_service = get_storage_service()
-    return [_to_asset_response(item, storage_service) for item in items]
-
-
@router.post("/batch-delete", response_model=BatchOperationResponse)
 def batch_delete_assets(
    request: BatchDeleteRequest,
@@ -671,12 +664,51 @@ def untag_asset(


@router.post("", response_model=AssetResponse)
-def create_asset() -> None:
-    """
-    已废弃接口。
-    所有素材上传统一走 uploadAssetDirect → completeDirectUpload → ingest-jobs 流程。
-    """
-    raise HTTPException(
-        status_code=410,
-        detail="此接口已废弃。请使用 uploadAssetDirect 接口上传素材，Worker 会自动处理（视频转码、图片/音频元数据提取）并创建 Asset 记录。",
+def create_asset(
+    request: CreateAssetRequest,
+    authenticated_user: AuthenticatedUser = Depends(get_current_user),
+    asset_repository: Any = Depends(get_asset_repository),
+    asset_library_repository: Any = Depends(get_asset_library_repository),
+    project_repository: Any = Depends(get_project_repository),
+) -> AssetResponse:
+    # 先获取素材库，用于推导 project_id（前端可能不传）
+    library = asset_library_repository.get(request.library_id)
+    if library is None:
+        raise HTTPException(status_code=404, detail=f"AssetLibrary {request.library_id} not found")
+
+    # project_id 自动推导：优先用请求值，否则从 library 关联的项目获取
+    project_id = request.project_id or library.project_id
+
+    project = project_repository.find_by_id(project_id)
+    if project is None:
+        raise HTTPException(status_code=404, detail=f"Project {project_id} not found")
+    if not project.can_access(authenticated_user.user.id):
+        raise HTTPException(status_code=403, detail="Access denied to project")
+
+    # 确保 library 和 project 归属一致
+    if library.project_id != project_id:
+        raise HTTPException(status_code=400, detail="AssetLibrary does not belong to the specified project")
+
+    use_case = CreateAssetUseCase(asset_repository)
+    item = use_case.execute(
+        CreateAssetCommand(
+            project_id=project_id,
+            library_id=request.library_id,
+            name=request.name,
+            storage_key=request.storage_key,
+            mime_type=request.mime_type,
+            metadata=request.metadata,
+            file_size=request.file_size,
+            thumbnail_url=request.thumbnail_url,
+            duration=request.duration,
+            width=request.width,
+            height=request.height,
+            fps=request.fps,
+            codec=request.codec,
+            status=AssetStatus(request.status),
+            classification_status=ClassificationStatus(request.classification_status),
+            quality_score=request.quality_score,
+            uploaded_by_user_id=authenticated_user.user.id,
+        )
    )
+    return _to_asset_response(item)
@@ -47,10 +47,6 @@ class GenerateCoverRequest(BaseModel):
        ge=0.0,
        description="手动选帧时间点（秒），仅 cover_type=manual 时有效",
    )
-    cover_url: Optional[str] = Field(
-        default=None,
-        description="上传的封面图片 URL，仅 cover_type=upload 时有效",
-    )


 class GenerateCoverResponse(BaseModel):
@@ -63,83 +59,6 @@ class GenerateCoverResponse(BaseModel):
 # ── Route ────────────────────────────────────────────────────────────────


-def _persist_cover_frame(
-    frame_url: str,
-    plan_id: str,
-    title_text: str = "",
-    *,
-    title_color: str = "#ffffff",
-    title_position: str = "bottom",
-    title_font_size: int | None = None,
-) -> str:
-    """下载 MediaKit 返回的临时帧图，可选叠加标题后转存到 OSS covers/ 路径。
-
-    Args:
-        frame_url: MediaKit 返回的临时帧图 URL
-        plan_id: 剪辑计划 ID（生成 OSS key）
-        title_text: 非空时用 Pillow 在帧上叠加标题（用于 E2 从源素材抽帧，
-            因为源素材本身没有烧录标题）
-        title_color: 标题字体颜色（#RRGGBB）
-        title_position: 标题位置 top/center/bottom
-        title_font_size: 标题字号，None 时自动计算
-    """
-    import tempfile
-    import uuid
-    from pathlib import Path
-
-    tmp_path: str | None = None
-    try:
-        import httpx
-
-        resp = httpx.get(frame_url, timeout=30, follow_redirects=True)
-        resp.raise_for_status()
-        if not resp.content:
-            return frame_url
-
-        with tempfile.NamedTemporaryFile(suffix=".jpg", delete=False) as tmp:
-            tmp.write(resp.content)
-            tmp_path = tmp.name
-
-        # E2 从源素材抽帧时，源素材无标题，叠加标题文字
-        if title_text and title_text.strip():
-            try:
-                from packages.shared.title_overlay import apply_title_to_image
-
-                applied = apply_title_to_image(
-                    tmp_path,
-                    title_text,
-                    color=title_color,
-                    position=title_position,
-                    font_size=title_font_size,
-                )
-                if applied:
-                    logger.info("[封面生成] E2 帧图已叠加标题: plan_id=%s", plan_id)
-            except Exception:
-                logger.warning(
-                    "[封面生成] E2 标题叠加失败（返回无标题帧）: plan_id=%s",
-                    plan_id,
-                    exc_info=True,
-                )
-
-        from packages.shared.storage import get_shared_storage_service
-
-        storage = get_shared_storage_service()
-        cover_key = f"covers/{plan_id}/cover_{uuid.uuid4().hex[:8]}.jpg"
-        storage.upload_file(
-            file_or_path=tmp_path,
-            storage_key=cover_key,
-            content_type="image/jpeg",
-        )
-        public_url = storage.get_url(cover_key)
-        return public_url or frame_url
-    except Exception:
-        logger.warning("封面帧转存失败，返回原始 URL: plan_id=%s", plan_id, exc_info=True)
-        return frame_url
-    finally:
-        if tmp_path:
-            Path(tmp_path).unlink(missing_ok=True)
-
-
@router.post("/generate-cover", response_model=GenerateCoverResponse)
 def generate_cover(
    body: GenerateCoverRequest,
@@ -159,29 +78,6 @@ def generate_cover(
    _, plan_svc = services
    plan = plan_svc.get_plan_or_raise(plan_id)

-    # ── upload 类型：直接保存前端上传的封面图片，不需要预览视频 ──────
-    if body.cover_type == "upload":
-        if not body.cover_url:
-            raise HTTPException(
-                status_code=400,
-                detail="cover_type=upload 时必须提供 cover_url",
-            )
-        cover_data = {
-            "type": "upload",
-            "image_url": body.cover_url,
-        }
-        current_config = dict(plan.config) if plan.config else {}
-        current_config["cover"] = cover_data
-        normalized = normalize_plan_config(current_config)
-        plan_svc.update_plan_config(plan_id, {"cover": normalized["cover"]})
-        logger.info(
-            "封面上传完成: plan_id=%s cover_url=%s by user=%s",
-            plan_id,
-            body.cover_url[:80] if body.cover_url else "",
-            current_user.user.id,
-        )
-        return GenerateCoverResponse(plan_id=plan_id, cover=cover_data)
-
    # ── 3 步查找预览视频 URL ──────────────────────────────────────────
    # 第一步：从 plan.config 读取
    logger.info("[封面生成] 步骤1: 从 plan.config 查找 rendered_storage_key: plan_id=%s", plan_id)
@@ -209,6 +105,10 @@ def generate_cover(
                            generation_task_id,
                            rendered_storage_key[:80],
                        )
+                        logger.info(
+                            plan_id,
+                            generation_task_id,
+                        )
            except Exception:
                logger.warning(
                    "封面生成: 通过 generation_task_id 查找视频失败: plan_id=%s",
@@ -216,33 +116,6 @@ def generate_cover(
                    exc_info=True,
                )

-    # 第 2.5 步：通过 plan_id 作为 source_edit_plan_id 查找关联的已完成预览任务
-    if not rendered_storage_key:
-        try:
-            gen_task_repo = SQLAlchemyGenerationTaskRepository(db)
-            logger.info("[封面生成] 步骤2.5: 通过 source_edit_plan_id 查找: plan_id=%s", plan_id)
-            preview_tasks = gen_task_repo.list_by_source_edit_plan(plan_id)
-            for pt in preview_tasks:
-                if getattr(pt, "status", "") == "completed" and getattr(pt, "is_preview", False):
-                    video_repo = get_generated_video_repository(db)
-                    use_case = ListGeneratedVideosByTaskUseCase(video_repo)
-                    videos = use_case.execute(pt.id)
-                    if videos:
-                        rendered_storage_key = getattr(videos[0], "file_url", "") or ""
-                        logger.info(
-                            "[封面生成] ✅ 步骤2.5找到视频: plan_id=%s task_id=%s url=%s",
-                            plan_id,
-                            pt.id,
-                            rendered_storage_key[:80],
-                        )
-                        break
-        except Exception:
-            logger.warning(
-                "封面生成: 通过 source_edit_plan_id 查找预览任务失败: plan_id=%s",
-                plan_id,
-                exc_info=True,
-            )
-
    # 第三步：按 user + template 查找最近的已完成预览任务（兜底）
    if not rendered_storage_key:
        try:
@@ -273,252 +146,67 @@ def generate_cover(
                exc_info=True,
            )

-    # 使用裸 URL（rendered/* 已配置公开读）；找不到渲染视频时不立即报错，
-    # 因为步骤 E 可以直接从源素材抽帧（历史数据或 Worker 抽帧失败时的兜底）
+    # 仍然找不到才报 400
+    if not rendered_storage_key:
+        logger.error("[封面生成] ❌ 找不到预览视频: plan_id=%s", plan_id)
+        raise HTTPException(
+            status_code=400,
+            detail="请先生成预览视频，再生成封面",
+        )
+
+    # 回写到 plan.config
+    plan_svc.update_plan_config(plan_id, {"rendered_storage_key": rendered_storage_key})
+
+    # 使用裸 URL（rendered/* 已配置公开读）
    primary_video_url = None
-    if rendered_storage_key:
-        plan_svc.update_plan_config(plan_id, {"rendered_storage_key": rendered_storage_key})
-        try:
-            if rendered_storage_key.startswith("http"):
-                primary_video_url = rendered_storage_key
-            else:
-                from packages.shared.storage import get_shared_storage_service
-
-                storage_svc = get_shared_storage_service()
-                primary_video_url = storage_svc.get_url(rendered_storage_key)
-            if primary_video_url:
-                import re as _re
-
-                primary_video_url = _re.sub(r"(?<!:)//", "/", primary_video_url)
-            logger.info(
-                "获取预览视频URL用于封面生成: plan_id=%s url=%s",
-                plan_id,
-                primary_video_url[:80] if primary_video_url else "",
-            )
-        except Exception as e:
-            logger.warning("获取预览视频URL失败: plan_id=%s err=%s", plan_id, e)
-            primary_video_url = None
-
-    # 统一封面管道：优先从 GenerationTask.cover_url 读取渲染后视频抽帧的封面
-    # 多步查找 cover_url，和查找视频 URL 一样的 fallback 逻辑
-    if body.cover_type in ("ai_frame", "ai_regenerate"):
-        cover_url_from_task = None
-        gen_task_repo = SQLAlchemyGenerationTaskRepository(db)
-
-        # 步骤 A：通过 generation_task_id 直接查找
-        generation_task_id = (plan.config or {}).get("generation_task_id", "")
-        if generation_task_id:
-            try:
-                task = gen_task_repo.get(generation_task_id)
-                if task and getattr(task, "cover_url", ""):
-                    cover_url_from_task = task.cover_url
-                    logger.info(
-                        "[封面生成] 统一管道封面(步骤A-direct): plan_id=%s task_id=%s url=%s",
-                        plan_id,
-                        generation_task_id,
-                        cover_url_from_task[:80],
-                    )
-            except Exception:
-                logger.warning(
-                    "[封面生成] 步骤A读取 cover_url 失败: plan_id=%s task_id=%s",
-                    plan_id,
-                    generation_task_id,
-                    exc_info=True,
-                )
-
-        # 步骤 B：通过 source_edit_plan_id 查找关联预览任务的 cover_url
-        if not cover_url_from_task:
-            try:
-                preview_tasks = gen_task_repo.list_by_source_edit_plan(plan_id)
-                for pt in preview_tasks:
-                    if getattr(pt, "status", "") == "completed" and getattr(pt, "cover_url", ""):
-                        cover_url_from_task = pt.cover_url
-                        logger.info(
-                            "[封面生成] 统一管道封面(步骤B-source_plan): plan_id=%s task_id=%s url=%s",
-                            plan_id,
-                            pt.id,
-                            cover_url_from_task[:80],
-                        )
-                        break
-            except Exception:
-                logger.warning(
-                    "[封面生成] 步骤B查找 cover_url 失败: plan_id=%s",
-                    plan_id,
-                    exc_info=True,
-                )
-
-        # 步骤 C：通过 user+template 查找最近的已完成预览任务的 cover_url
-        if not cover_url_from_task:
-            try:
-                preview_tasks = gen_task_repo.list_latest_completed_preview(
-                    user_id=str(current_user.user.id),
-                    template_id=template_id,
-                )
-                for pt in preview_tasks:
-                    if getattr(pt, "cover_url", ""):
-                        cover_url_from_task = pt.cover_url
-                        logger.info(
-                            "[封面生成] 统一管道封面(步骤C-user+template): plan_id=%s task_id=%s url=%s",
-                            plan_id,
-                            pt.id,
-                            cover_url_from_task[:80],
-                        )
-                        break
-            except Exception:
-                logger.warning(
-                    "[封面生成] 步骤C查找 cover_url 失败: plan_id=%s template_id=%s",
-                    plan_id,
-                    template_id,
-                    exc_info=True,
-                )
-
-        # 步骤 D：从 plan.config.cover_candidates 读取（Worker 渲染时写入）
-        if not cover_url_from_task:
-            _candidates = (plan.config or {}).get("cover_candidates") or []
-            if isinstance(_candidates, list) and _candidates:
-                _first = _candidates[0]
-                if isinstance(_first, dict):
-                    cover_url_from_task = _first.get("image_url") or _first.get("url") or ""
-                    if cover_url_from_task:
-                        logger.info(
-                            "[封面生成] 统一管道封面(步骤D-cover_candidates): plan_id=%s url=%s",
-                            plan_id,
-                            cover_url_from_task[:80],
-                        )
-
-        # 步骤 E1：如果有已渲染的预览视频 URL 但 cover_url 未持久化（历史数据），
-        # 直接从渲染视频抽帧
-        if not cover_url_from_task and primary_video_url:
-            try:
-                from packages.shared.mediakit_client import get_mediakit_client
-
-                mk_client = get_mediakit_client()
-                if mk_client.is_available:
-                    logger.info(
-                        "[封面生成] 步骤E1-从渲染视频抽帧: plan_id=%s url=%s",
-                        plan_id,
-                        primary_video_url[:80],
-                    )
-                    snapshots = mk_client.extract_frames(
-                        video_url=primary_video_url,
-                        strategy="SpecifiedFrames",
-                        max_frames=1,
-                        poll_interval=2.0,
-                        max_poll_attempts=5,
-                        max_retries=0,
-                    )
-                    if snapshots:
-                        raw = snapshots[0].get("image_url") or snapshots[0].get("url") or ""
-                        if raw:
-                            cover_url_from_task = _persist_cover_frame(raw, plan_id)
-                            logger.info(
-                                "[封面生成] 统一管道封面(步骤E1-rendered-video): plan_id=%s url=%s",
-                                plan_id,
-                                cover_url_from_task[:80],
-                            )
-            except Exception:
-                logger.warning(
-                    "[封面生成] 步骤E1从渲染视频抽帧失败: plan_id=%s",
-                    plan_id,
-                    exc_info=True,
-                )
-
-        # 步骤 E2：当 A/B/C/D/E1 均未命中（如历史预览任务无 cover_url）时，
-        # 直接从用户选择的第一个视频素材中抽取封面帧作为兜底。API 请求内短超时，不阻塞。
-        if not cover_url_from_task and body.asset_ids:
-            from packages.adapters.sqlalchemy_impl.asset_repository import (
-                SQLAlchemyAssetRepository,
-            )
-            from packages.shared.mediakit_client import get_mediakit_client
+    try:
+        if rendered_storage_key.startswith("http"):
+            primary_video_url = rendered_storage_key
+        else:
            from packages.shared.storage import get_shared_storage_service

-            asset_repo = SQLAlchemyAssetRepository(db)
            storage_svc = get_shared_storage_service()
-            mk_client = get_mediakit_client()
-            # 从 plan.config 读取完整标题样式，E2 从源素材抽帧时叠加（源素材本身无标题）
-            _e2_title_cfg = (plan.config or {}).get("title", {}) or {}
-            if not isinstance(_e2_title_cfg, dict):
-                _e2_title_cfg = {}
-            _e2_title_text = (_e2_title_cfg.get("text", "") or "").strip() if _e2_title_cfg.get("enabled", True) else ""
-            # 读取标题样式：前端可能传 color 或 font_color，都兼容
-            _e2_title_color = _e2_title_cfg.get("color") or _e2_title_cfg.get("font_color") or "#ffffff"
-            _e2_title_position = _e2_title_cfg.get("position", "bottom") or "bottom"
-            _e2_title_font_size = _e2_title_cfg.get("font_size") or _e2_title_cfg.get("size")
-            if mk_client.is_available:
-                for aid in body.asset_ids:
-                    try:
-                        asset = asset_repo.get(aid)
-                        if not asset or asset.file_type != "video":
-                            continue
-                        sk = asset.storage_key or ""
-                        if not sk:
-                            continue
-                        src_url = sk if sk.startswith("http") else storage_svc.get_url(sk)
-                        if not src_url:
-                            continue
-                        logger.info(
-                            "[封面生成] 步骤E-从素材抽帧: plan_id=%s asset_id=%s url=%s",
-                            plan_id,
-                            aid,
-                            src_url[:80],
-                        )
-                        snapshots = mk_client.extract_frames(
-                            video_url=src_url,
-                            strategy="SpecifiedFrames",
-                            max_frames=1,
-                            poll_interval=2.0,
-                            max_poll_attempts=5,
-                            max_retries=0,
-                        )
-                        if snapshots:
-                            raw = snapshots[0].get("image_url") or snapshots[0].get("url") or ""
-                            if raw:
-                                cover_url_from_task = _persist_cover_frame(
-                                    raw,
-                                    plan_id,
-                                    title_text=_e2_title_text,
-                                    title_color=_e2_title_color,
-                                    title_position=_e2_title_position,
-                                    title_font_size=_e2_title_font_size,
-                                )
-                                logger.info(
-                                    "[封面生成] 统一管道封面(步骤E-source-asset): plan_id=%s url=%s",
-                                    plan_id,
-                                    cover_url_from_task[:80],
-                                )
-                                break
-                    except Exception:
-                        logger.warning(
-                            "[封面生成] 步骤E从素材抽帧失败: plan_id=%s asset_id=%s",
-                            plan_id,
-                            aid,
-                            exc_info=True,
-                        )
+            primary_video_url = storage_svc.get_url(rendered_storage_key)
+        # 防御性规范化：合并路径中的双斜杠（// -> /），但保留协议头的 ://
+        # 历史数据中 project_id 为空时会产生 projects//tasks/ 路径，
+        # MediaKit 的 HTTP 客户端会规范化 URL 导致 404
+        if primary_video_url:
+            import re as _re

-        if cover_url_from_task:
-            # 标题已在预览视频渲染时烧录（ASS字幕），封面帧自然包含标题
-            cover_data = {
-                "type": "ai_frame",
-                "image_url": cover_url_from_task,
-                "frame_time": 0.0,
-                "confidence": 0.95,
-            }
+            primary_video_url = _re.sub(r"(?<!:)//", "/", primary_video_url)
+        logger.info(
+            "获取预览视频URL用于封面生成: plan_id=%s url=%s",
+            plan_id,
+            primary_video_url[:80] if primary_video_url else "",
+        )
+    except Exception as e:
+        raise HTTPException(
+            status_code=500,
+            detail=f"获取预览视频URL失败: {e}",
+        ) from e
+
+    # 优先使用渲染时预抽的封面候选帧（跳过 MediaKit，秒级返回）
+    cover_candidates = (plan.config or {}).get("cover_candidates", [])
+    if cover_candidates and body.cover_type in ("ai_frame", "ai_regenerate"):
+        logger.info(
+            "[封面生成] 使用预存封面候选帧: plan_id=%s count=%d",
+            plan_id,
+            len(cover_candidates),
+        )
+        first_frame = cover_candidates[0]
+        cover_data = {
+            "type": "ai_frame",
+            "image_url": first_frame.get("image_url", ""),
+            "frame_time": first_frame.get("frame_time", 0.0),
+            "confidence": 0.9,
+        }
+        if cover_data["image_url"]:
            current_config = dict(plan.config) if plan.config else {}
            current_config["cover"] = cover_data
            normalized = normalize_plan_config(current_config)
            plan_svc.update_plan_config(plan_id, {"cover": normalized["cover"]})
            return GenerateCoverResponse(plan_id=plan_id, cover=cover_data)

-        logger.warning(
-            "[封面生成] 统一管道未找到 cover_url (A/B/C/D均未命中): plan_id=%s",
-            plan_id,
-        )
-        # ai_frame/ai_regenerate 类型必须从渲染管道获取，不再回退到 AI 服务
-        raise HTTPException(
-            status_code=400,
-            detail="封面生成失败：未找到可抽帧的视频素材，请确认已上传视频素材后重试",
-        )
-
    from packages.shared.ai_service import run_generate_cover

    try:
@@ -264,39 +264,9 @@ def create_preview_generation_task(
    if not video_ratio and request.template_id:
        video_ratio = _infer_video_ratio_from_template(request.template_id, db, user_id)

-    # 根据 video_ratio 计算输出分辨率（默认竖屏 1080x1920）
-    output_width, output_height = 1080, 1920
-    if video_ratio:
-        parts = video_ratio.split(":")
-        if len(parts) == 2:
-            try:
-                w, h = int(parts[0]), int(parts[1])
-                base = 1920
-                if w < h:
-                    # 竖屏
-                    output_width = round(base * w / h)
-                    output_height = base
-                else:
-                    # 横屏
-                    output_width = base
-                    output_height = round(base * h / w)
-                # 对齐到偶数
-                output_width = output_width - output_width % 2
-                output_height = output_height - output_height % 2
-            except (ValueError, ZeroDivisionError):
-                output_width, output_height = 1080, 1920
-    resolution = f"{output_width}x{output_height}"
-
-    logger.info(
-        "[预览生成] 分辨率: video_ratio=%s → %s (%dx%d)",
-        video_ratio, resolution, output_width, output_height,
-    )
-
    # 从模板读取 editing_mode / mode 作为 strategy_id（渲染 pipeline 的 mode 参数）
    strategy_id = _resolve_strategy_id_from_template(request.template_id, db, user_id)

-    title_config = request.title_config or {}
-
    use_case = CreateGenerationTaskUseCase(generation_task_repository)

    try:
@@ -315,14 +285,11 @@ def create_preview_generation_task(
                asset_select_mode="",
                batch_id="",
                video_title=request.video_title,
-                resolution=resolution,
+                resolution="",
                bgm_config=request.bgm_config or {},
                auto_retry_enabled=False,
                auto_retry_max=0,
                is_preview=True,
-                title_config=title_config,
-                output_width=output_width,
-                output_height=output_height,
            )
        )
    except ValueError as e:
@@ -332,32 +299,6 @@ def create_preview_generation_task(
        logger.error("[预览生成] 创建失败: %s", e, exc_info=True)
        raise HTTPException(status_code=500, detail="创建预览生成任务失败，请稍后再试") from e

-    # 关联编辑计划：如果前端未传 source_edit_plan_id，通过 template_id + user_id 查找
-    if not task.source_edit_plan_id and request.template_id:
-        try:
-            from packages.adapters.sqlalchemy_impl.edit_plan_repository import (
-                SQLAlchemyEditPlanRepository,
-            )
-
-            _plan_repo = SQLAlchemyEditPlanRepository(db)
-            _plans = _plan_repo.list_by_template(request.template_id, limit=20)
-            for _p in _plans:
-                if (_p.created_by_user_id or "") == user_id:
-                    task.source_edit_plan_id = _p.id
-                    generation_task_repository.update(task)
-                    logger.info(
-                        "[预览生成] 自动关联编辑计划: task_id=%s plan_id=%s",
-                        task.id,
-                        _p.id,
-                    )
-                    break
-        except Exception:
-            logger.warning(
-                "[预览生成] 查找关联编辑计划失败（不影响主流程）: task_id=%s",
-                task.id,
-                exc_info=True,
-            )
-
    # 入队执行；若入队失败则标记任务为 failed 避免僵尸数据
    try:
        if not safe_enqueue_generation_task(
@@ -16,7 +16,6 @@ from app.core.task_enqueue import (
 from app.dependencies import (
    get_asset_library_repository,
    get_asset_repository,
-    get_db_session,
    get_generated_video_repository,
    get_generation_task_repository,
    get_project_repository,
@@ -33,7 +32,6 @@ from app.schemas.generation_task import (
    ListGenerationTasksResponse,
 )
 from fastapi import APIRouter, Depends, HTTPException
-from sqlalchemy.orm import Session

 from packages.application import (
    CreateGenerationTaskCommand,
@@ -70,7 +68,7 @@ def _to_generation_task_response(task) -> GenerationTaskResponse:
        output_width=getattr(task, "output_width", 1280),
        output_height=getattr(task, "output_height", 720),
        cover_url=getattr(task, "cover_url", ""),
-        title_config=getattr(task, "title_config", {}) or {},
+        custom_title=getattr(task, "custom_title", ""),
        logs=getattr(task, "logs", "[]"),
        status=task.status,
        progress=task.progress,
@@ -144,54 +142,6 @@ def _select_assets_from_library(
    return [a.id for a in ready_video_assets]


-
-def _writeback_edit_plan_config(
-    plan_id: str,
-    task_id: str,
-    title_config: dict | None,
-    db: Session,
-) -> None:
-    """任务入队成功后，回写 EditPlan.config：generation_task_id + title_config。
-
-    用 merge 方式更新，不整体覆盖 config，避免丢失其他字段。
-    失败只记日志，不影响任务创建。
-    """
-    if not plan_id:
-        return
-    try:
-        from packages.adapters.sqlalchemy_impl.models import EditPlanModel
-
-        plan_model = db.query(EditPlanModel).filter(EditPlanModel.id == plan_id).first()
-        if plan_model is None:
-            logger.warning("[生成任务] 回写plan.config失败: plan不存在 plan_id=%s", plan_id)
-            return
-
-        current_config = plan_model.config if isinstance(plan_model.config, dict) else {}
-        merged = dict(current_config)
-        merged["generation_task_id"] = task_id
-        if title_config:
-            merged["title_config"] = title_config
-        plan_model.config = merged
-        db.commit()
-        logger.info(
-            "[生成任务] 回写plan.config成功: plan_id=%s task_id=%s keys=%s",
-            plan_id,
-            task_id,
-            list(merged.keys()),
-        )
-    except Exception as e:
-        logger.warning(
-            "[生成任务] 回写plan.config异常（不影响任务创建）: plan_id=%s error=%s",
-            plan_id,
-            e,
-            exc_info=True,
-        )
-        try:
-            db.rollback()
-        except Exception:
-            pass
-
-
 def _resolve_project_and_library(
    request: CreateGenerationTaskRequest,
    project_repository: Any,
@@ -237,7 +187,6 @@ def create_generation_task(
    project_repository: Any = Depends(get_project_repository),
    asset_library_repository: Any = Depends(get_asset_library_repository),
    asset_repository: Any = Depends(get_asset_repository),
-    db: Session = Depends(get_db_session),
 ) -> BatchGenerationTaskResponse:
    logger.info(
        "[生成任务] 接收请求: user_id=%s, template_id=%s, asset_count=%d, mode=%s, count=%d",
@@ -293,89 +242,6 @@ def create_generation_task(
                    detail="当前项目没有符合条件的视频素材，请先上传并等待导入完成后再生成。",
                )

-    # ── 兜底复用预览产物 ──
-    # 前端刷新后 previewTaskId 丢失，降级调 create 接口时，
-    # 如果同一 edit_plan 有已完成的预览任务，直接复用（秒出）。
-    if request.source_edit_plan_id and not request.is_preview:
-        try:
-            from packages.adapters.sqlalchemy_impl.models import (
-                GenerationTaskModel,
-            )
-
-            _preview_model = (
-                db.query(GenerationTaskModel)
-                .filter(
-                    GenerationTaskModel.source_edit_plan_id == request.source_edit_plan_id,
-                    GenerationTaskModel.is_preview.is_(True),
-                    GenerationTaskModel.status == "completed",
-                    GenerationTaskModel.created_by_user_id == authenticated_user.user.id,
-                )
-                .order_by(GenerationTaskModel.created_at.desc())
-                .first()
-            )
-            if _preview_model is not None:
-                # 校验分辨率一致性（与 confirm 端点逻辑相同）
-                req_w = request.output_width or 0
-                req_h = request.output_height or 0
-                src_w = getattr(_preview_model, "output_width", 0) or 0
-                src_h = getattr(_preview_model, "output_height", 0) or 0
-                resolution_match = (req_w == 0 or req_w == src_w) and (req_h == 0 or req_h == src_h)
-
-                if resolution_match:
-                    from packages.adapters.sqlalchemy_impl.generation_task_repository import (
-                        _to_domain,
-                    )
-
-                    preview_task = _to_domain(_preview_model)
-
-                    # 如果传了标题，更新 title_config
-                    fallback_title_config = None
-                    if request.title_config and request.title_config.get("text", "").strip():
-                        fallback_title_config = dict(preview_task.title_config or {})
-                        fallback_title_config.update(request.title_config)
-
-                    preview_task.mark_confirmed(
-                        cover_url=request.cover_url or preview_task.cover_url,
-                        output_width=request.output_width or preview_task.output_width,
-                        output_height=request.output_height or preview_task.output_height,
-                        title_config=fallback_title_config,
-                    )
-                    generation_task_repository.update(preview_task)
-
-                    # 同步标题到 EditPlan.config
-                    if fallback_title_config:
-                        _writeback_edit_plan_config(
-                            plan_id=request.source_edit_plan_id,
-                            task_id=preview_task.id,
-                            title_config=fallback_title_config,
-                            db=db,
-                        )
-
-                    logger.info(
-                        "[生成任务] 兜底复用预览产物: preview_task_id=%s, plan_id=%s",
-                        preview_task.id,
-                        request.source_edit_plan_id,
-                    )
-                    return BatchGenerationTaskResponse(
-                        items=[_to_generation_task_response(preview_task)],
-                        total=1,
-                    )
-                else:
-                    logger.info(
-                        "[生成任务] 兜底复用跳过（分辨率不一致）: plan_id=%s, src=%sx%s, req=%sx%s",
-                        request.source_edit_plan_id,
-                        src_w,
-                        src_h,
-                        req_w,
-                        req_h,
-                    )
-        except Exception:
-            logger.warning(
-                "[生成任务] 兜底复用预览产物异常（不影响主流程）: plan_id=%s",
-                request.source_edit_plan_id,
-                exc_info=True,
-            )
-
    use_case = CreateGenerationTaskUseCase(generation_task_repository)
    count = request.count
    created_tasks = []
@@ -437,53 +303,10 @@ def create_generation_task(
                    output_width=request.output_width,
                    output_height=request.output_height,
                    cover_url=request.cover_url,
-                    title_config=request.title_config or {},
+                    custom_title=request.custom_title,
                )
            )
            try:
-                # 兜底关联编辑计划：前端未传 source_edit_plan_id 时，
-                # 通过 template_id + user_id 在 DB 层直接查找最新的 plan。
-                # 必须在 enqueue 之前执行，避免 worker 读取时 source_edit_plan_id 为空（竞态条件）
-                if not task.source_edit_plan_id and request.template_id:
-                    try:
-                        from packages.adapters.sqlalchemy_impl.models import EditPlanModel
-
-                        _plan_model = (
-                            db.query(EditPlanModel)
-                            .filter(
-                                EditPlanModel.template_id == request.template_id,
-                                EditPlanModel.created_by_user_id == user_id,
-                            )
-                            .order_by(EditPlanModel.created_at.desc())
-                            .first()
-                        )
-                        if _plan_model:
-                            task.source_edit_plan_id = _plan_model.id
-                            generation_task_repository.update(task)
-                            logger.info(
-                                "[生成任务] 自动关联编辑计划: task_id=%s plan_id=%s",
-                                task.id,
-                                _plan_model.id,
-                            )
-                    except Exception:
-                        logger.warning(
-                            "[生成任务] 查找关联编辑计划失败（不影响主流程）: task_id=%s",
-                            task.id,
-                            exc_info=True,
-                        )
-
-                # 回写 plan.config：必须在 enqueue 之前执行，
-                # 确保 worker 读取 plan 时 config 中已包含 generation_task_id。
-                # 只在首个任务时回写一次，避免批量生成时循环覆盖。
-                _effective_plan_id = task.source_edit_plan_id
-                if _effective_plan_id and len(created_tasks) == 0:
-                    _writeback_edit_plan_config(
-                        plan_id=_effective_plan_id,
-                        task_id=task.id,
-                        title_config=request.title_config,
-                        db=db,
-                    )
-
                if safe_enqueue_generation_task(
                    task,
                    generation_task_repository,
@@ -528,7 +351,6 @@ def confirm_generation(
    authenticated_user: AuthenticatedUser = Depends(get_current_user),
    generation_task_repository: Any = Depends(get_generation_task_repository),
    project_repository: Any = Depends(get_project_repository),
-    db: Session = Depends(get_db_session),
 ) -> BatchGenerationTaskResponse:
    """确认生成 -- 复用预览渲染产物（预览与正式品质一致）。

@@ -557,29 +379,13 @@ def confirm_generation(
        resolution_match = (req_w == 0 or req_w == src_w) and (req_h == 0 or req_h == src_h)

        if resolution_match:
-            # 如果用户传了 custom_title，同步更新 title_config
-            confirmed_title_config = None
-            if request.custom_title and request.custom_title.strip():
-                confirmed_title_config = dict(getattr(source_task, "title_config", {}) or {})
-                confirmed_title_config["text"] = request.custom_title.strip()
-
            source_task.mark_confirmed(
                cover_url=request.cover_url,
+                custom_title=request.custom_title,
                output_width=request.output_width,
                output_height=request.output_height,
-                title_config=confirmed_title_config,
            )
            generation_task_repository.update(source_task)
-
-            # 同步标题到 EditPlan.config
-            if confirmed_title_config and source_task.source_edit_plan_id:
-                _writeback_edit_plan_config(
-                    plan_id=source_task.source_edit_plan_id,
-                    task_id=source_task.id,
-                    title_config=confirmed_title_config,
-                    db=db,
-                )
-
            logger.info(
                "[确认生成] 复用预览产物: task_id=%s, user_id=%s",
                task_id,
@@ -621,6 +427,7 @@ def confirm_generation(
            output_width=request.output_width,
            output_height=request.output_height,
            cover_url=request.cover_url,
+            custom_title=request.custom_title,
        )
    )

@@ -753,6 +560,7 @@ def retry_generation_task(
            output_width=getattr(task, "output_width", 1280),
            output_height=getattr(task, "output_height", 720),
            cover_url=getattr(task, "cover_url", ""),
+            custom_title=getattr(task, "custom_title", ""),
        )
    )
    try:
@@ -1,6 +1,6 @@
 from datetime import datetime, timezone

-import psycopg
+import psycopg2
 import redis
 from app.config import settings
 from fastapi import APIRouter, status
@@ -49,7 +49,7 @@ async def _check_database() -> dict:
            "message": "Using in-memory database",
        }
    try:
-        conn = psycopg.connect(settings.DATABASE_URL, connect_timeout=3)
+        conn = psycopg2.connect(settings.DATABASE_URL, connect_timeout=3)
        with conn.cursor() as cur:
            cur.execute("SELECT 1")
            cur.fetchone()
@@ -124,7 +124,7 @@ async def _check_migrations() -> dict:
            "message": "Using in-memory database, no migrations needed",
        }
    try:
-        conn = psycopg.connect(settings.DATABASE_URL, connect_timeout=3)
+        conn = psycopg2.connect(settings.DATABASE_URL, connect_timeout=3)
        with conn.cursor() as cur:
            cur.execute("""
                SELECT COUNT(*) FROM information_schema.tables
@@ -1,9 +1,10 @@
 """模板编辑器 API 路由包.

-模块拆分：
+将原来 2560 行的 templates_editor.py 巨无霸拆分为 12 个模块：
 - schemas.py:        所有 Pydantic model
 - dependencies.py:   依赖注入
 - _utils.py:         工具函数
+- _fallback.py:      自动兜底逻辑
 - draft.py:          草稿管理（详情/更新/发布/版本/回滚）
 - clips.py:          片段管理（CRUD/分割/合并/重排/批量删除/从素材创建）
 - adjustments.py:    片段调整（速度/音量/裁剪/批量调速）
@@ -12,6 +13,7 @@
 - export.py:         导出配置
 - subtitles.py:      字幕管理
 - ai_features.py:    AI 推荐
+- generation.py:     生成（触发/进度/记录）
 - timeline.py:       时间线

 挂载路径: /api/v1/templates/{template_id}/editor/
@@ -32,6 +34,7 @@ from .dependencies import get_draft_plan_id, get_editor_services  # noqa: F401
 from .draft import router as draft_router
 from .effects import router as effects_router
 from .export import router as export_router
+from .generation import router as generation_router
 from .subtitles import router as subtitles_router
 from .timeline import router as timeline_router

@@ -48,6 +51,7 @@ _sub_routers = [
    export_router,
    subtitles_router,
    ai_features_router,
+    generation_router,
    timeline_router,
 ]

@@ -0,0 +1,227 @@
+"""模板编辑器自动兜底逻辑.
+
+generate_editor_draft 触发生成前的自动修复流程：
+1. draft → editing 状态迁移
+2. 无片段时从模板复制片段配置
+3. 为无素材片段分配指定素材
+4. 项目有素材库时自动选素材
+"""
+
+from __future__ import annotations
+
+import logging
+import random
+from typing import Any
+
+from app.services.edit_plan_service import EditPlanService
+from sqlalchemy.orm import Session
+
+from packages.adapters.sqlalchemy_impl.template_clip_config_repository import (
+    SQLAlchemyTemplateClipConfigRepository,
+)
+from packages.adapters.sqlalchemy_impl.template_repository import (
+    SQLAlchemyTemplateRepository,
+)
+from packages.domain.edit_plan import EditPlanStatus
+
+logger = logging.getLogger(__name__)
+
+
+def _auto_fallback_draft_to_editing(svc: EditPlanService, plan_id: str, plan_check) -> None:
+    """自动兜底 1: draft → editing"""
+    if plan_check.status == EditPlanStatus.DRAFT:
+        logger.info("模板编辑器自动兜底: plan=%s draft→editing", plan_id)
+        svc.transition_status(plan_id, EditPlanStatus.EDITING)
+
+
+def _auto_fallback_copy_template_clips(svc: EditPlanService, plan_id: str, plan_check, db: Session) -> None:
+    """自动兜底 2: 无片段 + 有 template_id → 从模板复制片段配置"""
+    existing_clips = svc.count_clips(plan_id)
+    if existing_clips == 0 and plan_check.template_id:
+        logger.info(
+            "模板编辑器自动兜底: plan=%s 无片段，从模板 %s 复制片段配置",
+            plan_id,
+            plan_check.template_id,
+        )
+        clip_config_repo = SQLAlchemyTemplateClipConfigRepository(db)
+        configs = clip_config_repo.list_by_template(plan_check.template_id)
+        if configs:
+            for cfg in configs:
+                svc.create_clip(
+                    plan_id=plan_id,
+                    clip_type=cfg.clip_type.value if hasattr(cfg.clip_type, "value") else cfg.clip_type,
+                    order=cfg.order,
+                    template_clip_config_id=cfg.id,
+                    duration=cfg.default_duration,
+                    transition_effect=(
+                        cfg.transition_effect.value
+                        if hasattr(cfg.transition_effect, "value")
+                        else cfg.transition_effect
+                    ),
+                )
+            logger.info(
+                "模板编辑器自动兜底: plan=%s 从 template_clip_configs 复制了 %d 个片段",
+                plan_id,
+                len(configs),
+            )
+        else:
+            tpl_repo = SQLAlchemyTemplateRepository(db)
+            segments = tpl_repo.list_segments(plan_check.template_id)
+            for seg in segments:
+                avg_duration = (seg.duration_min + seg.duration_max) / 2
+                svc.create_clip(
+                    plan_id=plan_id,
+                    clip_type="main",
+                    order=seg.segment_order,
+                    duration=avg_duration,
+                    config={
+                        "material_type": seg.material_type or "",
+                        "template_segment_id": seg.id,
+                    },
+                )
+            logger.info(
+                "模板编辑器自动兜底: plan=%s 从旧模板 segments 复制了 %d 个片段",
+                plan_id,
+                len(segments),
+            )
+
+
+def _auto_fallback_assign_assets(svc: EditPlanService, plan_id: str, plan_check) -> list:
+    """自动兜底 3: 为没有素材的片段分配素材。返回剩余无素材片段列表。"""
+    all_clips = svc.list_clips(plan_id)
+    clips_without_asset = [c for c in all_clips if not c.asset_id]
+    config_asset_ids = (plan_check.config or {}).get("asset_ids", [])
+
+    logger.info(
+        "模板编辑器自动兜底3 诊断: plan=%s total_clips=%d " "clips_without_asset=%d config_asset_ids=%r",
+        plan_id,
+        len(all_clips),
+        len(clips_without_asset),
+        config_asset_ids[:5] if config_asset_ids else [],
+    )
+
+    if clips_without_asset and config_asset_ids:
+        logger.info(
+            "模板编辑器自动兜底3: plan=%s 为 %d 个无素材片段分配 %d 个指定素材",
+            plan_id,
+            len(clips_without_asset),
+            len(config_asset_ids),
+        )
+        assigned = 0
+        for i, clip in enumerate(clips_without_asset):
+            asset_idx = i % len(config_asset_ids)
+            try:
+                svc.assign_asset(clip.id, config_asset_ids[asset_idx])
+                assigned += 1
+            except Exception as exc:
+                logger.error(
+                    "模板编辑器自动兜底3: plan=%s clip=%s 分配素材 %s 失败: %s",
+                    plan_id,
+                    clip.id,
+                    config_asset_ids[asset_idx],
+                    exc,
+                )
+        logger.info(
+            "模板编辑器自动兜底3: plan=%s 素材分配完成 assigned=%d/%d",
+            plan_id,
+            assigned,
+            len(clips_without_asset),
+        )
+        # 重新检查剩余无素材片段
+        all_clips_after = svc.list_clips(plan_id)
+        clips_without_asset = [c for c in all_clips_after if not c.asset_id]
+        if clips_without_asset:
+            logger.warning(
+                "模板编辑器自动兜底3: plan=%s 仍有 %d 个片段无素材",
+                plan_id,
+                len(clips_without_asset),
+            )
+    elif not clips_without_asset:
+        logger.info("模板编辑器自动兜底3: plan=%s 所有片段已有素材，跳过", plan_id)
+    elif not config_asset_ids:
+        logger.info(
+            "模板编辑器自动兜底3: plan=%s config.asset_ids 为空，跳过分配",
+            plan_id,
+        )
+
+    return clips_without_asset
+
+
+def _auto_fallback_auto_material_mode(
+    svc: EditPlanService,
+    plan_id: str,
+    plan_check,
+    clips_without_asset: list,
+    asset_library_repo: Any,
+    asset_repo: Any,
+    user_id: str = "",
+) -> None:
+    """自动兜底 4: 自动选素材分配给无素材片段
+
+    查找策略（按优先级）：
+    1. plan 有 project_id → 从项目素材库查找
+    2. plan 无 project_id 但有 user_id → 从用户上传的素材中查找
+    """
+    if not clips_without_asset:
+        return
+
+    ready_videos: list = []
+    source_desc = ""
+
+    # 策略 1: 通过 project_id 查找项目素材库
+    if plan_check.project_id:
+        libs = asset_library_repo.find_by_project(plan_check.project_id)
+        video_lib = None
+        for lib in libs:
+            lib_kind = lib.kind.value if hasattr(lib.kind, "value") else lib.kind
+            if lib_kind == "video":
+                video_lib = lib
+                break
+        if video_lib:
+            assets = asset_repo.find_by_library(video_lib.id)
+            ready_videos = [
+                a
+                for a in assets
+                if (a.status.value if hasattr(a.status, "value") else a.status) == "ready"
+                and a.mime_type
+                and a.mime_type.startswith("video")
+            ]
+            source_desc = f"素材库 {video_lib.name}"
+
+    # 策略 2: 通过 user_id 查找用户上传的素材
+    if not ready_videos and user_id and hasattr(asset_repo, "find_ready_videos_by_user"):
+        logger.info(
+            "模板编辑器自动兜底4: plan=%s project_id 为空，尝试通过 user_id=%s 查找素材",
+            plan_id,
+            user_id,
+        )
+        ready_videos = asset_repo.find_ready_videos_by_user(user_id)
+        source_desc = f"用户上传 (user_id={user_id[:8]}...)"
+
+    if not ready_videos:
+        logger.warning(
+            "模板编辑器自动兜底4: plan=%s 未找到可用素材 (project_id=%s, user_id=%s)",
+            plan_id,
+            plan_check.project_id or "(empty)",
+            user_id[:8] + "..." if user_id else "(empty)",
+        )
+        return
+
+    logger.info(
+        "模板编辑器自动兜底4: plan=%s 自动选素材分配给 %d 个无素材片段 (来源: %s, 共 %d 个)",
+        plan_id,
+        len(clips_without_asset),
+        source_desc,
+        len(ready_videos),
+    )
+    random.shuffle(ready_videos)
+    for i, clip in enumerate(clips_without_asset):
+        asset = ready_videos[i % len(ready_videos)]
+        svc.assign_asset(clip.id, asset.id)
+    logger.info(
+        "模板编辑器自动兜底4: plan=%s 从 %s 分配了 %d 个素材给 %d 个片段",
+        plan_id,
+        source_desc,
+        len(ready_videos),
+        len(clips_without_asset),
+    )
@@ -16,16 +16,13 @@
 from __future__ import annotations

 import logging
+from typing import Any

 from app.auth import AuthenticatedUser, get_current_user
-from app.core.storage import get_storage_service
-from app.dependencies import get_asset_repository
 from app.services.edit_plan_service import EditPlanService
 from app.services.edit_template_service import EditTemplateService
 from fastapi import APIRouter, Depends, HTTPException, Query, status

-from packages.adapters.sqlalchemy_impl.asset_repository import SQLAlchemyAssetRepository
-
 from .dependencies import get_draft_plan_id, get_editor_services
 from .schemas import (
    ClipBatchDeleteRequest,
@@ -46,100 +43,30 @@ logger = logging.getLogger(__name__)
 router = APIRouter(tags=["Template Editor"])


-def _clip_to_response(clip, asset_url: str | None = None) -> EditorClipResponse:
-    """统一构造片段响应 — 与 edit_plan_clips 表字段完全对齐"""
-
-    def _enum_str(val) -> str:
-        return val.value if hasattr(val, "value") else str(val)
-
-    def _fmt_dt(val) -> str:
-        if val is None:
-            return ""
-        if hasattr(val, "isoformat"):
-            return val.isoformat()
-        return str(val)
-
+def _clip_to_response(clip) -> EditorClipResponse:
+    """统一构造片段响应"""
    return EditorClipResponse(
        id=clip.id,
        plan_id=clip.plan_id,
-        clip_type=_enum_str(getattr(clip, "clip_type", "")),
+        clip_type=clip.clip_type.value
+        if hasattr(clip.clip_type, "value")
+        else str(clip.clip_type),
        order=clip.order,
        duration=clip.duration,
-        start_time=getattr(clip, "start_time", 0.0) or 0.0,
        text_content=clip.text_content or "",
-        transition_effect=_enum_str(getattr(clip, "transition_effect", "cut")),
-        transition_duration=getattr(clip, "transition_duration", 0.0) or 0.0,
+        transition_effect=clip.transition_effect.value
+        if hasattr(clip.transition_effect, "value")
+        else str(clip.transition_effect),
        playback_speed=clip.playback_speed or 1.0,
-        asset_id=getattr(clip, "asset_id", "") or "",
-        asset_url=asset_url,
-        status=getattr(clip, "status", "pending") or "pending",
-        template_clip_config_id=getattr(clip, "template_clip_config_id", "") or "",
        config=clip.config or {},
-        created_at=_fmt_dt(getattr(clip, "created_at", None)),
-        updated_at=_fmt_dt(getattr(clip, "updated_at", None)),
    )


-def _build_asset_url_map(
-    asset_ids: list[str],
-    asset_repo: SQLAlchemyAssetRepository,
-) -> dict[str, str | None]:
-    """批量查询素材并生成签名URL映射.
-
-    Returns:
-        {asset_id: signed_url_or_None}
-    """
-    if not asset_ids:
-        return {}
-
-    # 去重：多个 clip 可能引用同一个素材
-    # 去重并保持顺序
-    seen: set[str] = set()
-    unique_ids = []
-    for aid in asset_ids:
-        if aid and aid not in seen:
-            seen.add(aid)
-            unique_ids.append(aid)
-
-    result: dict[str, str | None] = {}
-    try:
-        storage = get_storage_service()
-    except Exception:
-        logger.warning("获取存储服务失败，跳过asset_url生成")
-        return {aid: None for aid in asset_ids}
-
-    # 批量查询所有 Asset（单次 SQL IN 查询，避免 N+1）
-    try:
-        assets = asset_repo.find_by_ids(unique_ids)
-        asset_map = {a.id: a for a in assets}
-    except Exception:
-        logger.warning("批量查询素材失败: asset_ids=%s", asset_ids, exc_info=True)
-        return {aid: None for aid in asset_ids if aid}
-
-    for aid in unique_ids:
-        try:
-            asset = asset_map.get(aid)
-            if asset is None:
-                result[aid] = None
-                continue
-            storage_key = getattr(asset, "storage_key", None) or ""
-            if not storage_key:
-                result[aid] = None
-                continue
-            result[aid] = storage.get_download_url(storage_key, expires_seconds=3600)
-        except Exception:
-            logger.warning("生成素材签名URL失败: asset_id=%s", aid, exc_info=True)
-            result[aid] = None
-
-    return result
-
-
@router.get("/clips", response_model=EditorClipListResponse)
 def list_draft_clips(
    template_id: str,
    plan_id: str = Depends(get_draft_plan_id),
    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
-    asset_repo: SQLAlchemyAssetRepository = Depends(get_asset_repository),
    skip: int = Query(default=0, ge=0),
    limit: int = Query(default=100, ge=1, le=500),
    _: AuthenticatedUser = Depends(get_current_user),
@@ -148,17 +75,8 @@ def list_draft_clips(
    _, plan_svc = services
    clips = plan_svc.list_clips(plan_id, skip=skip, limit=limit)
    total = plan_svc.count_clips(plan_id)
-
-    # 批量解析素材签名URL
-    asset_ids = [getattr(c, "asset_id", "") or "" for c in clips]
-    asset_ids = [aid for aid in asset_ids if aid]
-    url_map = _build_asset_url_map(asset_ids, asset_repo)
-
    return EditorClipListResponse(
-        items=[
-            _clip_to_response(c, asset_url=url_map.get(getattr(c, "asset_id", "") or ""))
-            for c in clips
-        ],
+        items=[_clip_to_response(c) for c in clips],
        total=total,
    )

@@ -238,7 +156,6 @@ def get_draft_clip_detail(
    clip_id: str,
    plan_id: str = Depends(get_draft_plan_id),
    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
-    asset_repo: SQLAlchemyAssetRepository = Depends(get_asset_repository),
    _: AuthenticatedUser = Depends(get_current_user),
 ):
    """获取草稿中的片段详情"""
@@ -248,20 +165,16 @@ def get_draft_clip_detail(
        raise HTTPException(status_code=404, detail="片段不存在")
    if clip.plan_id != plan_id:
        raise HTTPException(status_code=404, detail="片段不存在")
-
-    asset_id = getattr(clip, "asset_id", "") or ""
-    url_map = _build_asset_url_map([asset_id], asset_repo) if asset_id else {}
-    return _clip_to_response(clip, asset_url=url_map.get(asset_id))
+    return _clip_to_response(clip)


-@router.post("/clips/{clip_id}/split", status_code=status.HTTP_200_OK)
+@router.post("/clips/{clip_id}/split", response_model=dict[str, Any], status_code=status.HTTP_200_OK)
 def split_draft_clip(
    template_id: str,
    clip_id: str,
    body: SplitClipRequest,
    plan_id: str = Depends(get_draft_plan_id),
    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
-    asset_repo: SQLAlchemyAssetRepository = Depends(get_asset_repository),
    _: AuthenticatedUser = Depends(get_current_user),
 ):
    """将一个片段从指定时间点分割为两个片段"""
@@ -277,22 +190,32 @@ def split_draft_clip(
        ) from exc
    left = result["left_clip"]
    right = result["right_clip"]
-    asset_ids = [getattr(left, "asset_id", "") or "", getattr(right, "asset_id", "") or ""]
-    asset_ids = [a for a in asset_ids if a]
-    url_map = _build_asset_url_map(asset_ids, asset_repo)
    return {
-        "left_clip": _clip_to_response(left, asset_url=url_map.get(getattr(left, "asset_id", "") or "")),
-        "right_clip": _clip_to_response(right, asset_url=url_map.get(getattr(right, "asset_id", "") or "")),
+        "left_clip": {
+            "id": left.id,
+            "plan_id": left.plan_id,
+            "clip_type": left.clip_type,
+            "order": left.order,
+            "duration": left.duration,
+            "start_time": left.start_time,
+        },
+        "right_clip": {
+            "id": right.id,
+            "plan_id": right.plan_id,
+            "clip_type": right.clip_type,
+            "order": right.order,
+            "duration": right.duration,
+            "start_time": right.start_time,
+        },
    }


-@router.post("/clips/merge", status_code=status.HTTP_200_OK)
+@router.post("/clips/merge", response_model=dict[str, Any], status_code=status.HTTP_200_OK)
 def merge_draft_clips(
    template_id: str,
    body: MergeClipsRequest,
    plan_id: str = Depends(get_draft_plan_id),
    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
-    asset_repo: SQLAlchemyAssetRepository = Depends(get_asset_repository),
    _: AuthenticatedUser = Depends(get_current_user),
 ):
    """将多个连续的同类型片段合并为一个片段"""
@@ -307,11 +230,13 @@ def merge_draft_clips(
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST, detail=str(exc)
        ) from exc
-    asset_id = getattr(merged, "asset_id", "") or ""
-    url_map = _build_asset_url_map([asset_id], asset_repo) if asset_id else {}
    return {
-        "merged_clip": _clip_to_response(merged, asset_url=url_map.get(asset_id)),
-        "deleted_clip_ids": body.clip_ids,
+        "id": merged.id,
+        "plan_id": merged.plan_id,
+        "clip_type": merged.clip_type,
+        "order": merged.order,
+        "duration": merged.duration,
+        "text_content": merged.text_content,
    }


@@ -3,6 +3,7 @@
 核心依赖：
 - get_editor_services: 获取模板+计划服务
 - get_draft_plan_id: 根据 template_id 获取或创建草稿，返回 plan_id
+- _check_queue_limits: 生成队列限流检查
 """

 from __future__ import annotations
@@ -10,6 +11,7 @@ from __future__ import annotations
 import logging

 from app.auth import AuthenticatedUser, get_current_user
+from app.core.task_enqueue import GLOBAL_PENDING_LIMIT, USER_PENDING_LIMIT
 from app.dependencies import get_db_session
 from app.services.edit_plan_service import EditPlanService
 from app.services.edit_template_service import EditTemplateService
@@ -111,3 +113,29 @@ def get_draft_plan_id(
        user_id,
    )
    return plan.id
+
+
+def _check_queue_limits(gen_task_repo, user_id: str) -> None:
+    """队列限流预检查"""
+    try:
+        has_count = (
+            hasattr(gen_task_repo, "count_pending_by_user")
+            and hasattr(gen_task_repo, "count_pending_total")
+        )
+        if has_count:
+            user_pending = gen_task_repo.count_pending_by_user(user_id)
+            global_pending = gen_task_repo.count_pending_total()
+            if user_pending >= USER_PENDING_LIMIT:
+                raise HTTPException(
+                    status_code=429,
+                    detail=f"您的待处理任务过多（当前 {user_pending}/{USER_PENDING_LIMIT}），请等待完成后再提交",
+                )
+            if global_pending >= GLOBAL_PENDING_LIMIT:
+                raise HTTPException(
+                    status_code=503,
+                    detail="系统繁忙，请稍后再试",
+                )
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.warning("[模板编辑器队列限流] 检查失败，跳过: %s", e)
@@ -17,8 +17,6 @@ from fastapi import APIRouter, Depends, HTTPException, Query, status

 from .dependencies import get_draft_plan_id, get_editor_services
 from .schemas import (
-    EditorClipBatchUpdateRequest,
-    EditorClipBatchUpdateResponse,
    EditorDraftResponse,
    EditorPublishResponse,
    EditorRollbackRequest,
@@ -128,7 +126,11 @@ def list_template_versions(
            clip_count=len(v.clip_configs),
            change_note=v.change_note,
            published_by=v.published_by,
-            created_at=(v.created_at.isoformat() if hasattr(v.created_at, "isoformat") else str(v.created_at)),
+            created_at=(
+                v.created_at.isoformat()
+                if hasattr(v.created_at, "isoformat")
+                else str(v.created_at)
+            ),
        )
        for v in versions
    ]
@@ -160,35 +162,3 @@ def rollback_template(
        new_version=tpl.version,
        clip_count=len(clip_configs),
    )
-
-
-@router.put("/clips", response_model=EditorClipBatchUpdateResponse)
-def batch_update_clips(
-    template_id: str,
-    req: EditorClipBatchUpdateRequest,
-    plan_id: str = Depends(get_draft_plan_id),
-    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
-    _: AuthenticatedUser = Depends(get_current_user),
-):
-    """批量替换草稿clips（全量覆盖，用于前端选择素材后同步片段）
-
-    事务保证：清空→创建→标记ready 在同一数据库事务内完成，
-    任何步骤失败时自动回滚，避免数据不一致。
-    """
-    _, plan_svc = services
-    plan_svc.get_plan_or_raise(plan_id)
-
-    clips_data = []
-    for clip_item in req.clips:
-        item = {
-            "asset_id": clip_item.asset_id,
-            "start_time": clip_item.start_time,
-            "duration": clip_item.duration,
-        }
-        if clip_item.order is not None:
-            item["order"] = clip_item.order
-        clips_data.append(item)
-
-    plan_svc.replace_all_clips_transactional(plan_id, clips_data)
-
-    return EditorClipBatchUpdateResponse(plan_id=plan_id, clip_count=len(req.clips))
@@ -0,0 +1,332 @@
+"""草稿生成路由.
+
+端点：
+- POST /generate              触发生成
+- GET  /generation-status     生成进度
+- GET  /generations           生成记录列表
+"""
+
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from app.auth import AuthenticatedUser, get_current_user
+from app.core.celery_app import celery_app
+from app.core.storage import OSSStorageService, get_storage_service
+from app.dependencies import (
+    get_asset_library_repository,
+    get_asset_repository,
+    get_db_session,
+    get_generated_video_repository,
+)
+from app.schemas.generation_task import GenerationTaskResponse
+from app.services.edit_plan_service import EditPlanService
+from app.services.edit_template_service import EditTemplateService
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from packages.adapters.sqlalchemy_impl.generation_task_repository import (
+    SQLAlchemyGenerationTaskRepository,
+)
+from packages.application.generated_videos import ListGeneratedVideosByTaskUseCase
+from packages.application.generation_tasks import (
+    CreateGenerationTaskCommand,
+    CreateGenerationTaskUseCase,
+)
+from packages.domain.edit_plan import EditPlanStatus
+
+from ._fallback import (
+    _auto_fallback_assign_assets,
+    _auto_fallback_auto_material_mode,
+    _auto_fallback_copy_template_clips,
+    _auto_fallback_draft_to_editing,
+)
+from .dependencies import _check_queue_limits, get_draft_plan_id, get_editor_services
+from .schemas import (
+    ClipStatusItem,
+    EditPlanGenerateResponse,
+    EditPlanGenerationsResponse,
+    EditPlanGenerationStatusResponse,
+)
+
+logger = logging.getLogger(__name__)
+router = APIRouter(tags=["Template Editor"])
+
+
+@router.post("/generate", response_model=EditPlanGenerateResponse)
+def generate_editor_draft(
+    template_id: str,
+    plan_id: str = Depends(get_draft_plan_id),
+    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
+    db: Session = Depends(get_db_session),
+    current_user: AuthenticatedUser = Depends(get_current_user),
+    asset_library_repo: Any = Depends(get_asset_library_repository),
+    asset_repo: Any = Depends(get_asset_repository),
+) -> EditPlanGenerateResponse:
+    """触发模板草稿渲染生成"""
+    _, plan_svc = services
+    plan_check = plan_svc.get_plan_or_raise(plan_id)
+
+    # 自动兜底流程
+    _auto_fallback_draft_to_editing(plan_svc, plan_id, plan_check)
+    _auto_fallback_copy_template_clips(plan_svc, plan_id, plan_check, db)
+    clips_without_asset = _auto_fallback_assign_assets(plan_svc, plan_id, plan_check)
+    _auto_fallback_auto_material_mode(
+        plan_svc,
+        plan_id,
+        plan_check,
+        clips_without_asset,
+        asset_library_repo,
+        asset_repo,
+        user_id=str(current_user.user.id),
+    )
+
+    # 检查是否可复用已完成的预览产物（预览品质已与正式一致）
+    gen_task_repo = SQLAlchemyGenerationTaskRepository(db)
+    reusable_task = _find_reusable_preview_task(gen_task_repo, plan_id, plan_check)
+    if reusable_task:
+        # 复用预览产物：标记为正式产出，跳过渲染
+        reusable_task.mark_confirmed()
+        gen_task_repo.update(reusable_task)
+
+        # 将产物 URL 写入 plan config
+        rendered_url = _get_task_output_url(reusable_task, gen_task_repo, db)
+        plan_svc.update_plan_config(
+            plan_id,
+            {
+                "generation_task_id": reusable_task.id,
+                "rendered_storage_key": rendered_url,  # 统一用 rendered_storage_key
+            },
+        )
+        plan_svc.transition_status(plan_id, EditPlanStatus.COMPLETED)
+
+        updated_plan = plan_svc.get_plan_or_raise(plan_id)
+        logger.info(
+            "模板编辑器复用预览产物: template_id=%s plan_id=%s task_id=%s by user=%s",
+            template_id,
+            plan_id,
+            reusable_task.id,
+            current_user.user.id,
+        )
+        return EditPlanGenerateResponse(
+            plan_id=plan_id,
+            plan_status=updated_plan.status.value if hasattr(updated_plan.status, "value") else updated_plan.status,
+            generation_task_id=reusable_task.id,
+            clip_count=len((plan_check.config or {}).get("clips", [])),
+        )
+
+    # 检查是否可生成（含最后防线自动修复 + 诊断日志）
+    try:
+        can_gen, reason = plan_svc.can_generate(plan_id)
+    except ValueError as exc:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
+    if not can_gen:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=reason)
+
+    try:
+        clip_count = plan_svc.mark_clips_ready(plan_id)
+
+        user_id = current_user.user.id
+        _check_queue_limits(gen_task_repo, user_id)
+
+        gen_task_use_case = CreateGenerationTaskUseCase(gen_task_repo)
+        plan = plan_svc.get_plan_or_raise(plan_id)
+        config_asset_ids = (plan.config or {}).get("asset_ids", [])
+        gen_task = gen_task_use_case.execute(
+            CreateGenerationTaskCommand(
+                project_id=plan.project_id or "",
+                template_id=plan.template_id,
+                created_by_user_id=current_user.user.id,
+                source_edit_plan_id=plan_id,
+                asset_ids=list(config_asset_ids) if config_asset_ids else [],
+            ),
+        )
+
+        plan_svc.update_plan_config(plan_id, {"generation_task_id": gen_task.id})
+        plan_svc.transition_status(plan_id, EditPlanStatus.RENDERING)
+        celery_app.send_task("worker.render_edit_plan", args=[plan_id])
+
+        updated_plan = plan_svc.get_plan_or_raise(plan_id)
+
+        logger.info(
+            "模板编辑器触发生成: template_id=%s plan_id=%s gen_task_id=%s clips=%d by user=%s",
+            template_id,
+            plan_id,
+            gen_task.id,
+            clip_count,
+            current_user.user.id,
+        )
+
+        return EditPlanGenerateResponse(
+            plan_id=plan_id,
+            plan_status=updated_plan.status.value if hasattr(updated_plan.status, "value") else updated_plan.status,
+            generation_task_id=gen_task.id,
+            clip_count=clip_count,
+        )
+    except HTTPException:
+        raise
+    except Exception as _e:
+        logger.exception(
+            "模板编辑器触发生成失败: template_id=%s plan_id=%s",
+            template_id,
+            plan_id,
+        )
+        try:
+            plan_svc.transition_status(plan_id, EditPlanStatus.FAILED)
+        except Exception:
+            pass
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="生成失败，请稍后重试",
+        ) from _e
+
+
+def _find_reusable_preview_task(gen_task_repo, plan_id: str, plan) -> "object | None":
+    """查找该 plan 关联的已完成预览任务，判断是否可复用。
+
+    复用条件：
+    1. 存在 source_edit_plan_id == plan_id 的已完成预览任务
+    2. plan 在预览完成后未被修改（updated_at <= 预览完成时间）
+
+    Returns:
+        可复用的 GenerationTask，或 None
+    """
+    try:
+        tasks = gen_task_repo.list_by_source_edit_plan(plan_id)
+    except Exception:
+        return None
+
+    for task in tasks:
+        if not getattr(task, "is_preview", False):
+            continue
+        if not task.is_completed:
+            continue
+        # 检查 plan 是否在预览完成后被修改
+        completed_at = getattr(task, "completed_at", None)
+        if completed_at and hasattr(plan, "updated_at"):
+            plan_updated = plan.updated_at
+            # 如果 plan.updated_at 为空，无法判断是否修改过，跳过
+            if plan_updated is None:
+                continue
+            # 如果 plan 在预览完成后又被修改了，不能复用
+            if plan_updated > completed_at:
+                continue
+        return task
+    return None
+
+
+def _get_task_output_url(task, gen_task_repo, db) -> str:
+    """获取任务的输出视频 URL。"""
+    try:
+        video_repo = get_generated_video_repository(db)
+        use_case = ListGeneratedVideosByTaskUseCase(video_repo)
+        videos = use_case.execute(task.id)
+        if videos:
+            url = getattr(videos[0], "file_url", "") or ""
+            # 规范化：合并路径中的双斜杠（保留协议头 ://）
+            if url:
+                import re as _re
+                url = _re.sub(r"(?<!:)//", "/", url)
+            return url
+    except Exception:
+        pass
+    return ""
+
+
+@router.get("/generation-status", response_model=EditPlanGenerationStatusResponse)
+def get_editor_generation_status(
+    template_id: str,
+    plan_id: str = Depends(get_draft_plan_id),
+    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
+    storage_service: OSSStorageService = Depends(get_storage_service),
+    _: AuthenticatedUser = Depends(get_current_user),
+) -> EditPlanGenerationStatusResponse:
+    """查询草稿生成进度"""
+    _, plan_svc = services
+    try:
+        gen_status = plan_svc.get_generation_status(plan_id)
+    except ValueError as exc:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
+
+    plan = gen_status["plan"]
+    clips = gen_status["clips"]
+
+    clip_items = [
+        ClipStatusItem(
+            clip_id=c.id,
+            clip_type=c.clip_type,
+            order=c.order,
+            status=c.status.value if hasattr(c.status, "value") else c.status,
+            asset_id=c.asset_id or "",
+            text_content=c.text_content or "",
+            duration=c.duration,
+        )
+        for c in clips
+    ]
+
+    raw_video_url = (plan.config or {}).get("rendered_storage_key", "") or (plan.config or {}).get("rendered_url", "")
+    video_url = ""
+    if raw_video_url:
+        if raw_video_url.startswith("http"):
+            video_url = raw_video_url  # 已经是完整 URL
+        else:
+            try:
+                video_url = storage_service.get_url(raw_video_url)  # storage_key -> 完整 URL
+            except Exception as e:
+                logger.warning("生成视频URL获取失败: template_id=%s error=%s", template_id, e)
+                video_url = raw_video_url
+
+    progress = gen_status.get("progress", 0.0)
+    error_message = gen_status.get("error_message", "")
+    gen_task_status = gen_status.get("generation_task_status")
+    plan_status_val = plan.status.value if hasattr(plan.status, "value") else plan.status
+    if plan_status_val == "completed" and progress < 100:
+        progress = 100.0
+
+    return EditPlanGenerationStatusResponse(
+        plan_id=plan_id,
+        plan_status=plan_status_val,
+        generation_task_id=gen_status["generation_task_id"],
+        generation_task_status=gen_task_status,
+        progress=progress,
+        video_url=video_url,
+        error_message=error_message,
+        clips=clip_items,
+    )
+
+
+@router.get("/generations", response_model=EditPlanGenerationsResponse)
+def list_editor_generations(
+    template_id: str,
+    plan_id: str = Depends(get_draft_plan_id),
+    services: tuple[EditTemplateService, EditPlanService] = Depends(get_editor_services),
+    db: Session = Depends(get_db_session),
+    _: AuthenticatedUser = Depends(get_current_user),
+) -> EditPlanGenerationsResponse:
+    """查询草稿关联的生成记录列表"""
+    _, plan_svc = services
+    plan_svc.get_plan_or_raise(plan_id)
+
+    gen_task_repo = SQLAlchemyGenerationTaskRepository(db)
+    tasks = gen_task_repo.list_by_source_edit_plan(plan_id)
+    items = [
+        GenerationTaskResponse(
+            id=t.id,
+            project_id=t.project_id,
+            asset_library_id=t.asset_library_id,
+            strategy_id=t.strategy_id,
+            voice_library_id=t.voice_library_id,
+            template_id=t.template_id,
+            asset_ids=t.asset_ids,
+            title_ids=t.title_ids,
+            voice_ids=t.voice_ids,
+            source_edit_plan_id=t.source_edit_plan_id or "",
+            status=t.status.value if hasattr(t.status, "value") else t.status,
+            progress=t.progress,
+            result_count=t.result_count,
+            error_message=t.error_message,
+        )
+        for t in tasks
+    ]
+    return EditPlanGenerationsResponse(items=items, total=len(items))
@@ -8,6 +8,7 @@ from __future__ import annotations
 import re as _re
 from typing import Any, List, Optional

+from app.schemas.generation_task import GenerationTaskResponse
 from pydantic import BaseModel, Field, validator

 _EXPORT_RESOLUTION_PATTERN = _re.compile(r"^\d+x\d+$")
@@ -15,6 +16,50 @@ _EXPORT_VALID_QUALITY_PRESETS = {"ultra_fast", "fast", "balanced", "high", "best
 _EXPORT_VALID_FORMATS = {"mp4", "mov"}


+# ── 生成状态相关 ────────────────────────────────────────────────────────────
+
+
+class ClipStatusItem(BaseModel):
+    """片段生成状态"""
+
+    clip_id: str
+    clip_type: str
+    order: int
+    status: str
+    asset_id: str
+    text_content: str
+    duration: float
+
+
+class EditPlanGenerationStatusResponse(BaseModel):
+    """剪辑计划生成进度响应体"""
+
+    plan_id: str
+    plan_status: str
+    generation_task_id: Optional[str] = None
+    generation_task_status: Optional[str] = None
+    progress: float = 0.0
+    video_url: str = ""
+    error_message: str = ""
+    clips: List[ClipStatusItem]
+
+
+class EditPlanGenerateResponse(BaseModel):
+    """剪辑计划触发生成响应体"""
+
+    plan_id: str
+    plan_status: str
+    generation_task_id: str
+    clip_count: int
+
+
+class EditPlanGenerationsResponse(BaseModel):
+    """剪辑计划关联的生成记录列表响应体"""
+
+    items: List[GenerationTaskResponse]
+    total: int
+
+
 # ── AI 推荐 ────────────────────────────────────────────────────────────────


@@ -22,8 +67,12 @@ class AIRecommendRequest(BaseModel):
    """AI 推荐片段方案请求体"""

    asset_ids: List[str] = Field(default_factory=list, description="素材 ID 列表")
-    editing_mode: str = Field(default="one_take", description="剪辑模式: one_take / pip / voice_over / voice_pip")
-    target_duration: float = Field(default=30.0, ge=1.0, le=600.0, description="目标时长（秒）")
+    editing_mode: str = Field(
+        default="one_take", description="剪辑模式: one_take / pip / voice_over / voice_pip"
+    )
+    target_duration: float = Field(
+        default=30.0, ge=1.0, le=600.0, description="目标时长（秒）"
+    )


 class AIRecommendClipItem(BaseModel):
@@ -50,6 +99,8 @@ class AIRecommendResponse(BaseModel):
    confidence: float = Field(..., ge=0.0, le=1.0, description="AI 推荐置信度 (0~1)")


+
+
 # ── BGM ────────────────────────────────────────────────────────────────────


@@ -165,7 +216,9 @@ class ClipBatchDeleteResponse(BaseModel):
 class ClipsFromAssetsRequest(BaseModel):
    """从素材批量创建片段请求"""

-    asset_ids: List[str] = Field(..., min_length=1, max_length=200, description="素材 ID 列表，按顺序追加到时间线末尾")
+    asset_ids: List[str] = Field(
+        ..., min_length=1, max_length=200, description="素材 ID 列表，按顺序追加到时间线末尾"
+    )
    clip_type: str = Field(default="main", description="片段类型，默认 main")


@@ -174,7 +227,6 @@ class ClipsFromAssetsResponse(BaseModel):

    success: bool = True
    created_count: int
-    plan_id: str = ""
    message: str = ""
    clip_ids: List[str] = Field(default_factory=list, description="创建的片段ID列表")

@@ -387,28 +439,17 @@ class EditorUpdateRequest(BaseModel):


 class EditorClipResponse(BaseModel):
-    """片段响应 — 与数据库 edit_plan_clips 表字段对齐"""
+    """片段响应"""

    id: str
    plan_id: str
    clip_type: str
    order: int
    duration: float
-    start_time: float = 0.0
    text_content: str = ""
    transition_effect: str = "cut"
-    transition_duration: float = 0.0
    playback_speed: float = 1.0
-    asset_id: str = ""
-    asset_url: str | None = Field(
-        default=None,
-        description="素材视频签名URL（1小时有效），用于前端预览播放",
-    )
-    status: str = "pending"
-    template_clip_config_id: str = ""
    config: dict[str, Any] = Field(default_factory=dict)
-    created_at: str = ""
-    updated_at: str = ""


 class EditorClipListResponse(BaseModel):
@@ -440,28 +481,6 @@ class EditorClipUpdateRequest(BaseModel):
    config: Optional[dict[str, Any]] = None


-class EditorClipBatchItem(BaseModel):
-    """批量更新clips的单个片段"""
-
-    asset_id: str = Field(default="", max_length=100, description="关联素材ID，可为空（占位片段）")
-    start_time: float = Field(default=0.0, ge=0.0)
-    duration: float = Field(default=0.0, ge=0.0)
-    order: Optional[int] = Field(default=None, ge=0, description="排序，None表示按数组顺序")
-
-
-class EditorClipBatchUpdateRequest(BaseModel):
-    """批量替换clips请求（全量覆盖）"""
-
-    clips: List[EditorClipBatchItem] = Field(default_factory=list)
-
-
-class EditorClipBatchUpdateResponse(BaseModel):
-    """批量更新clips响应"""
-
-    plan_id: str
-    clip_count: int
-
-
 class EditorPublishResponse(BaseModel):
    """发布草稿响应"""

@@ -20,8 +20,6 @@ from app.schemas.tts import (
    SaveToLibraryRequest,
    SaveToLibraryResponse,
    TTSJobResponse,
-    TTSPreviewRequest,
-    TTSPreviewResponse,
    TTSStatusResponse,
    TTSSynthesizeRequest,
    TTSSynthesizeResponse,
@@ -33,7 +31,7 @@ from packages.adapters.sqlalchemy_impl.tts_job_repository import (
    SQLAlchemyTTSJobRepository,
 )
 from packages.adapters.sqlalchemy_impl.voice_library_repository import SQLAlchemyVoiceLibraryRepository
-from packages.application.cosyvoice_service import CosyVoiceError, CosyVoiceService
+from packages.application.cosyvoice_service import CosyVoiceService
 from packages.application.tts_job.streaming_service import TTSStreamingService
 from packages.application.tts_job.use_cases import (
    CreateTTSJobUseCase,
@@ -375,59 +373,6 @@ def save_tts_job_to_library(
    )


-
-@router.post("/preview", response_model=TTSPreviewResponse)
-def preview_tts(
-    request: TTSPreviewRequest,
-    authenticated_user: AuthenticatedUser = Depends(get_current_user),
-    cosyvoice_service: CosyVoiceService = Depends(get_cosyvoice_service),
-    voice_clone_repo=Depends(get_voice_clone_profile_repository),
-) -> TTSPreviewResponse:
-    """TTS 预览（试听）——同步合成，立即返回音频 URL。
-
-    用于前端预览配音效果，限制文本长度 200 字以内。
-    支持预设音色和克隆音色：克隆音色传的是 profile UUID，需解析为 CosyVoice voice_id。
-    """
-    # 解析 voice_id：前端可能传 VoiceCloneProfile UUID 或预设音色 ID
-    actual_voice_id = request.voice_id
-    profile = voice_clone_repo.get(request.voice_id)
-    if profile is not None:
-        # 命中克隆音色 profile — 校验归属权限
-        if profile.user_id != authenticated_user.user.id:
-            raise HTTPException(
-                status_code=status.HTTP_403_FORBIDDEN,
-                detail="无权访问该音色",
-            )
-        if not profile.voice_id:
-            raise HTTPException(
-                status_code=status.HTTP_400_BAD_REQUEST,
-                detail="音色克隆尚未完成，请稍后再试",
-            )
-        actual_voice_id = profile.voice_id
-
-    try:
-        result = cosyvoice_service.synthesize_speech(
-            text=request.text,
-            voice_id=actual_voice_id,
-            speed=request.speed,
-        )
-    except CosyVoiceError as e:
-        raise HTTPException(
-            status_code=status.HTTP_502_BAD_GATEWAY,
-            detail=f"TTS 合成失败: {e}",
-        ) from e
-    except ValueError as e:
-        raise HTTPException(
-            status_code=status.HTTP_400_BAD_REQUEST,
-            detail=str(e),
-        ) from e
-
-    return TTSPreviewResponse(
-        audio_url=result.audio_url,
-        duration=result.duration if result.duration and result.duration > 0 else None,
-    )
-
-
@router.websocket("/ws/tts/stream")
 async def tts_websocket_stream(
    websocket: WebSocket,
@@ -206,7 +206,6 @@ async def complete_direct_upload(
                ingest_job_id="",
                duplicated=True,
                asset_id=existing.id,
-                url=storage_service.get_url(normalized_key),
            )

    job = _submit_ingest_job(
@@ -216,7 +215,7 @@ async def complete_direct_upload(
        ingest_job_repository=ingest_job_repository,
        file_hash=request.file_hash,
    )
-    return DirectUploadCompleteResponse(storage_key=normalized_key, ingest_job_id=job.id, url=storage_service.get_url(normalized_key))
+    return DirectUploadCompleteResponse(storage_key=normalized_key, ingest_job_id=job.id)


@router.post(
@@ -58,12 +58,6 @@ class AssetResponse(BaseModel):
 MAX_BATCH_SIZE = 200


-class BatchGetRequest(BaseModel):
-    """批量获取素材详情请求。"""
-
-    ids: list[str] = Field(..., min_length=1, max_length=MAX_BATCH_SIZE, description="素材 ID 列表")
-
-
 class BatchDeleteRequest(BaseModel):
    """批量删除请求（软删除）。"""

@@ -7,10 +7,10 @@ from pydantic import BaseModel, Field, field_validator, model_validator
 class ConfirmGenerationRequest(BaseModel):
    """确认生成请求体 — 基于预览任务创建正式生成任务"""

-    output_width: int = Field(default=1080, ge=100, description="输出视频宽度")
-    output_height: int = Field(default=1920, ge=100, description="输出视频高度")
+    output_width: int = Field(default=1080, description="输出视频宽度")
+    output_height: int = Field(default=1920, description="输出视频高度")
    cover_url: str = Field(default="", description="自定义封面图片 URL")
-    custom_title: str = Field(default="", description="用户自定义标题文本，非空时同步到任务和编辑计划")
+    custom_title: str = Field(default="", description="自定义视频标题")


 class CreateGenerationTaskRequest(BaseModel):
@@ -33,11 +33,6 @@ class CreateGenerationTaskRequest(BaseModel):
    voice_ids: list[str] = Field(default_factory=list)
    # ── 来源剪辑计划 ──
    source_edit_plan_id: str = ""
-    # ── 标题配置（结构化）──
-    title_config: dict | None = Field(
-        default=None,
-        description="标题样式对象，包含 text/font/font_size/font_color/position/bold/stroke/shadow 等。为空时不影响现有行为。",
-    )
    # ── 视频标题 ──
    video_title: str = Field(default="", description="生成视频的标题/名称，为空则使用默认命名")
    # ── 批量生成 ──
@@ -77,6 +72,7 @@ class CreateGenerationTaskRequest(BaseModel):
    output_width: int = Field(default=1280, description="输出视频宽度")
    output_height: int = Field(default=720, description="输出视频高度")
    cover_url: str = Field(default="", description="封面图片 URL")
+    custom_title: str = Field(default="", description="自定义视频标题")

    @model_validator(mode="after")
    def _check_at_least_one_mode(self) -> "CreateGenerationTaskRequest":
@@ -112,7 +108,7 @@ class GenerationTaskResponse(BaseModel):
    output_width: int = 1280
    output_height: int = 720
    cover_url: str = ""
-    title_config: dict = Field(default_factory=dict)
+    custom_title: str = ""
    status: str
    progress: float
    result_count: int
@@ -185,10 +181,6 @@ class CreatePreviewGenerationTaskRequest(BaseModel):
        default="",
        description="关联的编辑计划ID（可选），用于确认生成时复用预览产物",
    )
-    title_config: dict = Field(
-        default_factory=dict,
-        description="标题配置（可选），渲染时烧录到预览视频中。支持字段: text/font/font_size/font_color/position/bold/stroke/shadow",
-    )

    @model_validator(mode="after")
    def _check_template_id(self) -> "CreatePreviewGenerationTaskRequest":
@@ -101,19 +101,3 @@ class SaveToLibraryResponse(BaseModel):
    voice_id: str
    voice_name: str
    status: str
-
-
-class TTSPreviewRequest(BaseModel):
-    """TTS 预览（试听）请求。"""
-
-    text: str = Field(..., min_length=1, max_length=200, description="合成文本，限制 200 字")
-    voice_id: str = Field(..., min_length=1, description="音色 ID")
-    speed: float = Field(1.0, ge=0.5, le=2.0, description="语速")
-    pitch: float = Field(1.0, ge=0.5, le=2.0, description="音调（预留，当前未使用）")
-
-
-class TTSPreviewResponse(BaseModel):
-    """TTS 预览（试听）响应。"""
-
-    audio_url: str = Field(..., description="合成音频 URL")
-    duration: Optional[float] = Field(default=None, description="音频时长（秒）")
@@ -39,7 +39,6 @@ class DirectUploadCompleteResponse(BaseModel):
    ingest_job_id: str
    duplicated: bool = Field(default=False, description="是否为重复素材（命中去重）")
    asset_id: str = Field(default="", description="重复素材的 asset_id（duplicated=true 时返回）")
-    url: str = Field(default="", description="Public URL of uploaded file")


 class UploadAssetResponse(BaseModel):
@@ -371,88 +371,6 @@ class EditPlanService:
        logger.info("删除所有片段: plan_id=%s count=%d", plan_id, count)
        return count

-    def replace_all_clips_transactional(
-        self,
-        plan_id: str,
-        clips_data: list[dict],
-    ) -> int:
-        """事务性地替换所有片段：清空→创建→标记ready，单事务保证原子性。
-
-        Args:
-            plan_id: 计划 ID
-            clips_data: 片段数据列表，每项包含 asset_id/start_time/duration/order
-
-        Returns:
-            int: 创建的片段数量
-
-        Raises:
-            Exception: 任何步骤失败时自动回滚
-        """
-        from packages.adapters.sqlalchemy_impl.models import EditPlanClipModel
-
-        db = self._clip_repo.session
-        try:
-            # 1. 清空现有 clips（不 commit）
-            deleted_count = db.query(EditPlanClipModel).filter(EditPlanClipModel.plan_id == plan_id).delete()
-
-            # 2. 批量创建新 clips（不 commit）
-            for i, clip_item in enumerate(clips_data):
-                order = clip_item.get("order") or i
-                clip = EditPlanClip.create(
-                    plan_id=plan_id,
-                    clip_type="main",
-                    order=order,
-                    asset_id=clip_item.get("asset_id", ""),
-                    start_time=clip_item.get("start_time", 0.0),
-                    duration=clip_item.get("duration", 0.0),
-                )
-                model = EditPlanClipModel(
-                    id=clip.id,
-                    plan_id=clip.plan_id,
-                    clip_type=clip.clip_type,
-                    order=clip.order,
-                    asset_id=clip.asset_id,
-                    text_content=clip.text_content,
-                    start_time=clip.start_time,
-                    duration=clip.duration,
-                    transition_effect=clip.transition_effect,
-                    transition_duration=clip.transition_duration,
-                    playback_speed=clip.playback_speed,
-                    status=clip.status.value,
-                    config=clip.config,
-                )
-                db.add(model)
-
-            # flush 让新建 clip 写入当前事务（未 commit），后续查询才能找到它们
-            db.flush()
-
-            # 3. 标记有 asset_id 的 clips 为 ready（不 commit）
-            pending_with_asset = (
-                db.query(EditPlanClipModel)
-                .filter(
-                    EditPlanClipModel.plan_id == plan_id,
-                    EditPlanClipModel.status == "pending",
-                    EditPlanClipModel.asset_id != "",
-                )
-                .all()
-            )
-            for m in pending_with_asset:
-                m.status = "ready"
-
-            # 4. 一次性提交
-            db.commit()
-            logger.info(
-                "事务性替换片段: plan_id=%s deleted=%d created=%d",
-                plan_id,
-                deleted_count,
-                len(clips_data),
-            )
-            return len(clips_data)
-        except Exception:
-            db.rollback()
-            logger.exception("事务性替换片段失败: plan_id=%s", plan_id)
-            raise
-
    # ── 片段分割与合并 ──────────────────────────────────────────────────────

    def split_clip(self, clip_id: str, split_time: float) -> Dict[str, Any]:
@@ -200,7 +200,15 @@ test.describe("Core generation flow", () => {
    await expect(page.getByRole("heading", { name: /选择配音/ })).toBeVisible({ timeout: 15000 })
    await page.getByRole("button", { name: "下一步" }).click()

-    // Step 4: title（新顺序：标题在预览之前）
+    // Step 4: preview — 需要先生成预览视频，才能进入下一步
+    await expect(page.getByRole("heading", { name: /生成预览/ })).toBeVisible({ timeout: 15000 })
+    // 点击"生成预览"按钮触发预览生成
+    await page.locator(".xx-preview-generate-btn").click()
+    // 等待预览生成完成（后端渲染，可能需要较长时间）
+    await expect(page.getByText("预览生成成功")).toBeVisible({ timeout: 300_000 })
+    await page.getByRole("button", { name: "下一步" }).click()
+
+    // Step 5: title
    await expect(page.getByRole("heading", { name: /选择标题/ })).toBeVisible({ timeout: 15000 })
    // 等待组件完全渲染
    await page.waitForTimeout(2000)
@@ -214,10 +222,6 @@ test.describe("Core generation flow", () => {
    await titleInput.fill(titleText)
    await page.getByRole("button", { name: "下一步" }).click()

-    // Step 5: preview — 前端实时预览架构改造，无需后端生成预览
-    await expect(page.getByRole("heading", { name: /预览设置/ })).toBeVisible({ timeout: 15000 })
-    await page.getByRole("button", { name: "下一步" }).click()
-
    // Step 6: cover (默认 AI 智能选帧模式，直接下一步)
    await expect(page.getByRole("heading", { name: /选择封面/ })).toBeVisible({ timeout: 15000 })
    await page.getByRole("button", { name: "下一步" }).click()
@@ -226,12 +230,16 @@ test.describe("Core generation flow", () => {
    await expect(page.getByRole("heading", { name: /确认生成/ })).toBeVisible()

    // Wait for generation API to be called
-    // 前端直接创建生成任务：POST /generation/tasks
+    // 确认生成走新流程：POST /tasks/{taskId}/confirm（复用预览产物）
+    // 或旧流程：POST /editor/generate（向后兼容）
    const generatePromise = page.waitForResponse(
      (response) => {
        const url = response.url()
        const path = new URL(url).pathname
-        return response.request().method() === "POST" && path.endsWith("/generation/tasks")
+        return (
+          response.request().method() === "POST" &&
+          (path.endsWith("/confirm") || path.endsWith("/editor/generate"))
+        )
      },
      { timeout: 30_000 },
    )
@@ -250,12 +258,9 @@ test.describe("Core generation flow", () => {
    // Generate API may return 400 in test env if template has no ready segments
    // That is OK for a wizard flow smoke test
    if (genResp.ok()) {
-      const genData = (await genResp.json()) as {
-        items: Array<{ id: string; status: string }>
-        total: number
-      }
-      expect(genData.items.length).toBeGreaterThan(0)
-      expect(genData.items[0].id).toBeTruthy()
+      const genData = (await genResp.json()) as { plan_id: string; generation_task_id: string }
+      expect(genData.plan_id).toBeTruthy()
+      expect(genData.generation_task_id).toBeTruthy()
    } else {
      console.log(`[E2E] Generate API returned ${genResp.status()}, wizard flow test still passes`)
    }
@@ -178,7 +178,7 @@ test.describe("素材库流程", () => {
    expect(kinds).toContain("image")
  })

-  test("创建素材记录 — POST /assets 已废弃返回 410", async ({ request }) => {
+  test("创建素材记录", async ({ request }) => {
    const { headers, userId } = await createAuthedUser(request, "asset-create")
    const projectId = await createProject(request, headers, Date.now().toString())

@@ -194,7 +194,7 @@ test.describe("素材库流程", () => {
    expect(lib.ok()).toBeTruthy()
    const libData = await lib.json()

-    // POST /assets 已废弃，应返回 410 Gone
+    // 创建素材记录
    const response = await request.post(`${apiBase}/assets`, {
      headers,
      data: {
@@ -210,9 +210,16 @@ test.describe("素材库流程", () => {
      },
    })

-    expect(response.status()).toBe(410)
+    expect(
+      response.ok(),
+      `创建素材应返回 2xx，实际: ${response.status()} ${await response.text()}`,
+    ).toBeTruthy()
+
    const data = await response.json()
-    expect(data.error?.code).toBe("HTTP_410")
+    expect(data.id, "应返回素材 ID").toBeTruthy()
+    expect(data.name).toContain("test_video")
+    expect(data.mime_type).toBe("video/mp4")
+    expect(data.library_id).toBe(libData.id)
  })

  test("列出素材", async ({ request }) => {
@@ -225,50 +232,51 @@ test.describe("素材库流程", () => {
      data: {
        project_id: projectId,
        name: `List Lib ${Date.now()}`,
-        kind: "image",
+        kind: "video",
      },
    })
    expect(lib.ok(), `创建素材库应成功: ${await lib.text()}`).toBeTruthy()
    const libData = await lib.json()

-    // 通过 multipart upload 上传 2 个小图片作为测试素材
-    // 创建一个 1x1 的 PNG buffer
-    const tinyPng = Buffer.from(
-      "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==",
-      "base64",
-    )
-
-    await request.post(`${apiBase}/upload`, {
+    // 创建 2 个素材
+    await request.post(`${apiBase}/assets`, {
      headers,
-      multipart: {
+      data: {
        project_id: projectId,
        library_id: libData.id,
-        file: { name: "clip_a.png", mimeType: "image/png", buffer: tinyPng },
+        name: `clip_a_${Date.now()}.mp4`,
+        storage_key: `uploads/e2e/clip_a.mp4`,
+        mime_type: "video/mp4",
+        status: "ready",
+        uploaded_by_user_id: userId,
      },
    })
-    await request.post(`${apiBase}/upload`, {
+    await request.post(`${apiBase}/assets`, {
      headers,
-      multipart: {
+      data: {
        project_id: projectId,
        library_id: libData.id,
-        file: { name: "clip_b.png", mimeType: "image/png", buffer: tinyPng },
+        name: `clip_b_${Date.now()}.mp4`,
+        storage_key: `uploads/e2e/clip_b.mp4`,
+        mime_type: "video/mp4",
+        status: "ready",
+        uploaded_by_user_id: userId,
      },
    })

-    // 列出素材（可能需要等待 ingest job 完成）
-    let items: any[] = []
-    for (let i = 0; i < 10; i++) {
-      const response = await request.get(`${apiBase}/assets`, {
-        headers,
-        params: { library_id: libData.id },
-      })
-      expect(response.ok(), `列出素材应返回 2xx`).toBeTruthy()
-      const data = await response.json()
-      items = data.items || []
-      if (items.length >= 2) break
-      await new Promise((r) => setTimeout(r, 2000))
-    }
+    // 列出素材
+    const response = await request.get(`${apiBase}/assets`, {
+      headers,
+      params: { library_id: libData.id },
+    })

+    expect(
+      response.ok(),
+      `列出素材应返回 2xx，实际: ${response.status()} ${await response.text()}`,
+    ).toBeTruthy()
+
+    const data = await response.json()
+    const items = data.items || []
    expect(items.length, "应至少有 2 个素材").toBeGreaterThanOrEqual(2)
  })

@@ -12,7 +12,6 @@
        "@tanstack/react-query": "^5.45.0",
        "antd": "^5.18.0",
        "axios": "^1.7.2",
-        "mp4box": "^2.4.1",
        "react": "^18.3.1",
        "react-dom": "^18.3.1",
        "react-router-dom": "^6.24.0",
@@ -4624,15 +4623,6 @@
      "dev": true,
      "license": "MIT"
    },
-    "node_modules/mp4box": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmmirror.com/mp4box/-/mp4box-2.4.1.tgz",
-      "integrity": "sha512-0HGX7nXoDIX6FKLVl4a3wtYjBlwqsN3xuQC3GXzNtKp98FXUOhDSq623azsz8DG5ptd9ZXcXodDkgbdMZOjWvw==",
-      "license": "BSD-3-Clause",
-      "engines": {
-        "node": ">=20.8.1"
-      }
-    },
    "node_modules/mrmime": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/mrmime/-/mrmime-2.0.1.tgz",
@@ -23,7 +23,6 @@
    "@tanstack/react-query": "^5.45.0",
    "antd": "^5.18.0",
    "axios": "^1.7.2",
-    "mp4box": "^2.4.1",
    "react": "^18.3.1",
    "react-dom": "^18.3.1",
    "react-router-dom": "^6.24.0",
@@ -60,6 +60,18 @@ export const smartMatchAssets = async (libraryId: string): Promise<{ items: Asse
  return response.data
 }

+/** 创建素材（上传文件后调用，附带 metadata） */
+export const createAsset = async (data: {
+  library_id: string
+  name: string
+  storage_key: string
+  mime_type: string
+  metadata?: AssetMetadata
+}): Promise<AssetItem> => {
+  const response = await apiClient.post("/assets", data)
+  return response.data
+}
+
 /** 更新素材（名称、metadata 等） */
 export const updateAsset = async (
  assetId: string,
@@ -13,6 +13,7 @@ export type {
  ClassificationJob,
  AssetDiagnosis,
  BatchOperationResult,
+  UploadResult,
  DirectUploadPrepareResult,
  DirectUploadCompleteResult,
 } from "./types"
@@ -33,13 +34,14 @@ export {
  getAssets,
  getAssetsByKind,
  smartMatchAssets,
+  createAsset,
  updateAsset,
  updateAssetReviewStatus,
  deleteAsset,
 } from "./assets"

 // 上传
-export { prepareDirectUpload, completeDirectUpload, uploadAssetDirect } from "./upload"
+export { uploadAsset, prepareDirectUpload, completeDirectUpload, uploadAssetDirect } from "./upload"

 // 任务
 export { getIngestJob, submitClassificationJob, getClassificationJob } from "./jobs"
@@ -135,5 +135,4 @@ export interface DirectUploadPrepareResult {
 export interface DirectUploadCompleteResult {
  storage_key: string
  ingest_job_id: string
-  url: string
 }
@@ -3,7 +3,16 @@
 */
 import apiClient from "../client"
 import { getOrCreateDefaultProject } from "../projects"
-import type { DirectUploadPrepareResult, DirectUploadCompleteResult } from "./types"
+import type { UploadResult, DirectUploadPrepareResult, DirectUploadCompleteResult } from "./types"
+
+/** 表单上传素材（小文件） */
+export const uploadAsset = async (formData: FormData): Promise<UploadResult> => {
+  const response = await apiClient.post("/upload", formData, {
+    headers: { "Content-Type": "multipart/form-data" },
+    timeout: 30 * 60 * 1000,
+  })
+  return response.data
+}

 /** 预签名直传准备 */
 export const prepareDirectUpload = async (data: {
@@ -1,109 +0,0 @@
-/**
- * 主动 Token 刷新模块
- *
- * 在 access_token 过期前主动刷新，避免 API 请求触发 401。
- * JWT payload 是 base64 编码的 JSON，无需第三方库即可解码。
- */
-import { useAuthStore } from "@/store/authStore"
-import { refreshAccessToken } from "./login"
-
-let refreshTimer: ReturnType<typeof setTimeout> | null = null
-
-/** 正在执行刷新操作的 Promise，防止主动刷新和 401 被动刷新并发竞争 */
-let activeRefreshPromise: Promise<void> | null = null
-
-/** 提前刷新的缓冲时间（秒） */
-const REFRESH_BUFFER_SECONDS = 60
-
-/**
- * 解码 JWT payload（不验签，仅读取 exp 字段）
- */
-function decodeJwtPayload(token: string): { exp?: number } | null {
-  try {
-    const parts = token.split(".")
-    if (parts.length !== 3) return null
-    // JWT 使用 base64url 编码，需要转换为标准 base64
-    const payload = parts[1].replace(/-/g, "+").replace(/_/g, "/")
-    const padded = payload + "=".repeat((4 - (payload.length % 4)) % 4)
-    const decoded = atob(padded)
-    return JSON.parse(decoded)
-  } catch {
-    return null
-  }
-}
-
-/**
- * 取消已调度的主动刷新
- */
-export function cancelProactiveRefresh(): void {
-  if (refreshTimer) {
-    clearTimeout(refreshTimer)
-    refreshTimer = null
-  }
-}
-
-/**
- * 执行 token 刷新（带并发锁，供主动刷新和被动 401 共用）
- * 返回当前刷新操作的 Promise；若已有刷新进行中则复用该 Promise。
- */
-export function executeTokenRefresh(): Promise<void> | null {
-  // 已有刷新进行中 → 复用
-  if (activeRefreshPromise) {
-    return activeRefreshPromise
-  }
-
-  const { user, refreshToken: refreshTokenValue } = useAuthStore.getState()
-
-  // 安全检查：user 或 refreshToken 为空时跳过刷新
-  if (!user || !refreshTokenValue) {
-    return null
-  }
-
-  activeRefreshPromise = (async () => {
-    try {
-      const data = await refreshAccessToken(refreshTokenValue)
-      const newAccessToken = data.access_token
-      const newRefreshToken = data.refresh_token ?? refreshTokenValue
-
-      // 更新 Zustand store + localStorage
-      useAuthStore.getState().setAuth(user, newAccessToken, newRefreshToken)
-
-      // 递归调度下一次刷新
-      scheduleProactiveRefresh()
-    } catch {
-      // 刷新失败 → 清除认证状态，跳转登录页
-      cancelProactiveRefresh()
-      useAuthStore.getState().clearAuth()
-      window.location.href = "/login"
-    } finally {
-      activeRefreshPromise = null
-    }
-  })()
-
-  return activeRefreshPromise
-}
-
-/**
- * 调度主动刷新：在 token 过期前 REFRESH_BUFFER_SECONDS 秒自动刷新
- */
-export function scheduleProactiveRefresh(): void {
-  cancelProactiveRefresh()
-
-  // 统一从 Zustand store 读取（与 setAuth 写入保持一致）
-  const { accessToken, refreshToken: refreshTokenValue } = useAuthStore.getState()
-
-  if (!accessToken || !refreshTokenValue) return
-
-  const payload = decodeJwtPayload(accessToken)
-  if (!payload?.exp) return
-
-  const now = Math.floor(Date.now() / 1000)
-  const secondsUntilExpiry = payload.exp - now
-
-  // 如果 token 已经过期或即将在缓冲时间内过期，立即刷新
-  const delaySeconds = Math.max(secondsUntilExpiry - REFRESH_BUFFER_SECONDS, 0)
-
-  refreshTimer = setTimeout(() => {
-    executeTokenRefresh()
-  }, delaySeconds * 1000)
-}
@@ -4,20 +4,11 @@
 import apiClient from "../client"
 import type { BgmPreset, BgmPresetsQuery } from "./types"

-/**
- * 获取 BGM 预设列表
- * @param templateId 模板/草稿 ID
- * @param params 分类/关键词筛选
- */
-export const getBgmPresets = async (
-  templateId: string,
-  params?: BgmPresetsQuery,
-): Promise<BgmPreset[]> => {
+/** 获取 BGM 预设列表 */
+export const getBgmPresets = async (params?: BgmPresetsQuery): Promise<BgmPreset[]> => {
  const searchParams: Record<string, string> = {}
  if (params?.category) searchParams.category = params.category
  if (params?.keyword) searchParams.keyword = params.keyword
-  const res = await apiClient.get(`/templates/${templateId}/editor/bgm/presets`, {
-    params: searchParams,
-  })
+  const res = await apiClient.get("/bgm/presets", { params: searchParams })
  return res.data?.data ?? res.data ?? []
 }
@@ -5,8 +5,7 @@
 import axios, { AxiosError, InternalAxiosRequestConfig } from "axios"
 import { message } from "antd"
 import { useAuthStore } from "@/store/authStore"
-
-import { cancelProactiveRefresh, executeTokenRefresh } from "./auth/tokenRefresh"
+import { refreshAccessToken } from "./auth"

 // 创建 Axios 实例
 const apiClient = axios.create({
@@ -98,22 +97,14 @@ apiClient.interceptors.response.use(
      isRefreshing = true

      try {
-        // 使用共享的刷新函数（带并发锁 + 安全检查）
-        const refreshPromise = executeTokenRefresh()
-        if (!refreshPromise) {
-          // user 或 refreshToken 为空，无法刷新
-          cancelProactiveRefresh()
-          useAuthStore.getState().clearAuth()
-          window.location.href = "/"
-          return Promise.reject(new Error("Unable to refresh: missing user or refresh token"))
-        }
-        await refreshPromise
+        const data = await refreshAccessToken(refreshToken)
+        const newAccessToken = data.access_token
+        const newRefreshToken = data.refresh_token ?? refreshToken

-        // 获取刷新后的新 token
-        const newAccessToken = useAuthStore.getState().accessToken
-        if (!newAccessToken) {
-          return Promise.reject(new Error("Token refresh failed: no new access token"))
-        }
+        // 更新 Zustand + localStorage
+        useAuthStore
+          .getState()
+          .setAuth(useAuthStore.getState().user!, newAccessToken, newRefreshToken)

        // 处理排队的请求
        processQueue(null, newAccessToken)
@@ -125,7 +116,6 @@ apiClient.interceptors.response.use(
        return apiClient(originalRequest)
      } catch (refreshError) {
        // 刷新失败 → 登出
-        cancelProactiveRefresh()
        processQueue(refreshError, null)
        useAuthStore.getState().clearAuth()
        window.location.href = "/"
@@ -1,22 +1,9 @@
 import apiClient from "../client"

-export interface GenerateCoverTitleConfig {
-  text?: string
-  font?: string
-  font_size?: number
-  font_color?: string
-  position?: string
-  bold?: boolean
-  stroke?: boolean
-  shadow?: boolean
-}
-
 export interface GenerateCoverRequest {
  asset_ids: string[]
  cover_type?: "ai_frame" | "manual" | "upload" | "ai_regenerate"
  frame_time?: number
-  /** 标题样式，用于在封面上叠加标题文字 */
-  title_config?: GenerateCoverTitleConfig
 }

 export interface GenerateCoverResponse {
@@ -36,9 +23,13 @@ export async function generateCover(
  templateId: string,
  data: GenerateCoverRequest,
 ): Promise<GenerateCoverResponse> {
-  const response = await apiClient.post<GenerateCoverResponse>("/generation/generate-cover", data, {
-    timeout: 300000,
-    params: { template_id: templateId },
-  })
+  const response = await apiClient.post<GenerateCoverResponse>(
+    "/generation/generate-cover",
+    { ...data, template_id: templateId },
+    {
+      timeout: 300000,
+      params: { template_id: templateId },
+    },
+  )
  return response.data
 }
@@ -3,9 +3,13 @@ export type {
  CreatePreviewRequest,
  CreatePreviewResponse,
  PreviewTaskResponse,
+  ConfirmGenerationRequest,
+  ConfirmGenerationResponse,
+  ConfirmGenerationTaskItem,
 } from "./types"

 export { createPreview, getPreviewStatus } from "./preview"
+export { confirmGeneration } from "./confirm"

 export { generateCover } from "./cover"
 export type { GenerateCoverRequest, GenerateCoverResponse } from "./cover"
@@ -13,21 +13,6 @@ export interface CreatePreviewRequest {
  video_title?: string
  duration?: number
  video_ratio?: string
-  /** 输出视频宽度（与 video_ratio 匹配，如 9:16 → 1080） */
-  output_width?: number
-  /** 输出视频高度（与 video_ratio 匹配，如 9:16 → 1920） */
-  output_height?: number
-  /* 标题烧录配置（可选，传入后 ASS 渲染标题到预览视频中） */
-  title_config?: {
-    text?: string
-    font?: string
-    font_size?: number
-    font_color?: string
-    position?: string
-    bold?: boolean
-    stroke?: boolean
-    shadow?: boolean
-  }
  bgm_config?: {
    enabled: boolean
    preset_id?: string
@@ -42,8 +27,6 @@ export interface CreatePreviewResponse {
  is_preview: boolean
  resolution: string
  created_at: string
-  /** 后端自动关联的编辑计划 ID（用于 fallback 路径传递 source_edit_plan_id） */
-  source_edit_plan_id?: string
 }

 /** 预览任务详情响应 */
@@ -6,7 +6,6 @@ import apiClient from "../client"
 import type {
  CreateGenerationTaskRequest,
  CreateGenerationTaskResponse,
-  GenerationTaskDetail,
  TaskItem,
  TaskListParams,
  TaskListResponse,
@@ -20,12 +19,6 @@ export const createGenerationTask = async (
  return data
 }

-/** 获取单个生成任务详情（轮询用） */
-export const getGenerationTask = async (taskId: string): Promise<GenerationTaskDetail> => {
-  const { data } = await apiClient.get<GenerationTaskDetail>(`/generation/tasks/${taskId}`)
-  return data
-}
-
 /** 获取任务列表（支持分页和筛选） */
 export const getTasks = async (params?: TaskListParams): Promise<TaskListResponse> => {
  const { data } = await apiClient.get<TaskListResponse>("/tasks", {
@@ -57,45 +57,12 @@ export interface TaskListResponse {
 export interface CreateGenerationTaskRequest {
  template_id: string
  asset_ids: string[]
-  title_ids?: string[]
-  voice_ids?: string[]
-  /** 输出视频宽度 */
-  output_width?: number
-  /** 输出视频高度 */
-  output_height?: number
-  /** 自定义封面图片 URL */
-  cover_url?: string
-  /** 自定义视频标题 */
-  custom_title?: string
-  /** 视频时长（秒） */
-  duration?: number
-  /** 视频宽高比，如 "9:16" */
-  video_ratio?: string
-  /** 标题烧录配置 */
-  title_config?: {
-    text?: string
-    font?: string
-    font_size?: number
-    font_color?: string
-    position?: string
-    bold?: boolean
-    stroke?: boolean
-    shadow?: boolean
-  }
-  /** 关联的草稿 ID（编辑流程数据链路用） */
-  source_edit_plan_id?: string
-  /** 配音素材库 ID（用户上传的音频或 AI 配音素材） */
-  voice_library_id?: string
-  /** 自定义 BGM 配置，覆盖模板 BGM 设置 */
-  bgm_config?: {
-    enabled: boolean
-    preset_id?: string
-    volume?: number
-  }
+  title_ids: string[]
+  voice_ids: string[]
 }

-/** 单个生成任务详情（对齐后端 GenerationTaskResponse） */
-export interface GenerationTaskDetail {
+/** 创建生成任务响应（对齐后端 GenerationTaskResponse） */
+export interface CreateGenerationTaskResponse {
  id: string
  project_id: string
  asset_library_id: string
@@ -105,18 +72,8 @@ export interface GenerationTaskDetail {
  asset_ids: string[]
  title_ids: string[]
  voice_ids: string[]
-  source_edit_plan_id?: string
  status: string
  progress: number
  result_count: number
  error_message: string
-  error_info?: TaskErrorInfo
-  created_at?: string | null
-  updated_at?: string | null
-}
-
-/** 创建生成任务响应（后端返回批量结构 {items, total}） */
-export interface CreateGenerationTaskResponse {
-  items: GenerationTaskDetail[]
-  total: number
 }
@@ -1,8 +1,27 @@
 /**
- * 模板草稿 CRUD API
+ * 模板草稿 CRUD + 生成相关 API
 */
 import apiClient from "../client"
-import type { EditPlan, UpdateEditPlanRequest, GeneratedVideo } from "./types"
+import type {
+  EditPlan,
+  EditPlanListParams,
+  EditPlanListResponse,
+  CreateEditPlanRequest,
+  UpdateEditPlanRequest,
+  GenerateResponse,
+  GenerationStatusResponse,
+  EditPlanGeneration,
+  GeneratedVideo,
+  CopyEditPlanRequest,
+} from "./types"
+
+/** 获取模板草稿列表（支持分页和筛选） */
+export async function getEditPlans(params?: EditPlanListParams): Promise<EditPlanListResponse> {
+  const response = await apiClient.get<EditPlanListResponse>("/templates/drafts", {
+    params,
+  })
+  return response.data
+}

 /** 获取单个模板草稿 */
 export async function getEditPlan(templateId: string): Promise<EditPlan> {
@@ -10,44 +29,63 @@ export async function getEditPlan(templateId: string): Promise<EditPlan> {
  return response.data
 }

-/** 更新模板草稿（支持传入 AbortSignal 用于自动保存竞态取消） */
+/** 创建模板草稿 */
+export async function createEditPlan(data: CreateEditPlanRequest): Promise<EditPlan> {
+  const response = await apiClient.post("/templates/drafts", data)
+  return response.data
+}
+
+/** 更新模板草稿 */
 export async function updateEditPlan(
  templateId: string,
  data: UpdateEditPlanRequest,
-  signal?: AbortSignal,
 ): Promise<EditPlan> {
-  const response = await apiClient.put(`/templates/${templateId}/editor`, data, { signal })
+  const response = await apiClient.put(`/templates/${templateId}/editor`, data)
  return response.data
 }

+/** 删除模板草稿 */
+export async function deleteEditPlan(templateId: string): Promise<void> {
+  await apiClient.delete(`/templates/${templateId}/editor`)
+}
+
+/** 触发生成 */
+export async function generateEditPlan(templateId: string): Promise<GenerateResponse> {
+  const response = await apiClient.post(`/templates/${templateId}/editor/generate`)
+  return response.data
+}
+
+/** 获取生成状态（轮询用） */
+export async function getGenerationStatus(templateId: string): Promise<GenerationStatusResponse> {
+  const response = await apiClient.get(`/templates/${templateId}/editor/generation-status`)
+  return response.data
+}
+
+/** 获取模板草稿关联的生成记录 */
+export async function getEditPlanGenerations(templateId: string): Promise<EditPlanGeneration[]> {
+  const response = await apiClient.get(`/templates/${templateId}/editor/generations`)
+  return response.data.items || []
+}
+
 /** 获取生成任务的视频结果列表 */
 export async function getGenerationTaskResults(taskId: string): Promise<GeneratedVideo[]> {
  const response = await apiClient.get(`/generation/tasks/${taskId}/results`)
  return response.data.items || response.data || []
 }

-/** ── 草稿 clips 批量更新 ── */
-
-export interface EditPlanClipInput {
-  asset_id: string
-  start_time: number
-  duration: number
-  order: number
+/** 取消生成任务 */
+export async function cancelGeneration(templateId: string): Promise<void> {
+  await apiClient.post(`/templates/${templateId}/editor/cancel`)
 }

-/**
- * 批量替换草稿的 clips（先全删再批量插入）
- * 后端路由：PUT /templates/{template_id}/editor/clips
- */
-export async function updateEditPlanClips(
+/** 复制模板草稿（含所有片段配置） */
+export async function copyEditPlan(
  templateId: string,
-  clips: EditPlanClipInput[],
-  signal?: AbortSignal,
-): Promise<{ count: number }> {
-  const response = await apiClient.put(
-    `/templates/${templateId}/editor/clips`,
-    { clips },
-    { signal },
+  data?: CopyEditPlanRequest,
+): Promise<EditPlan> {
+  const response = await apiClient.post<EditPlan>(
+    `/templates/${templateId}/editor/copy`,
+    data || {},
  )
  return response.data
 }
@@ -15,8 +15,14 @@ export type {
  EditPlanSegment,
  EditPlanConfig,
  EditPlan,
+  CreateEditPlanRequest,
  UpdateEditPlanRequest,
+  EditPlanListParams,
+  EditPlanListResponse,
+  GenerateResponse,
+  EditPlanGeneration,
  ClipStatusItem,
+  GenerationStatusResponse,
  GeneratedVideo,
  AIRecommendRequest,
  AIRecommendClipItem,
@@ -31,6 +37,7 @@ export type {
  ClipReorderResponse,
  ClipBatchDeleteResponse,
  ClipsFromAssetsResponse,
+  CopyEditPlanRequest,
  TransitionEffect,
  MediaAsset,
 } from "./types"
@@ -46,12 +53,18 @@ export {

 // 模板草稿 CRUD + 生成
 export {
+  getEditPlans,
  getEditPlan,
+  createEditPlan,
  updateEditPlan,
-  updateEditPlanClips,
+  deleteEditPlan,
+  generateEditPlan,
+  getGenerationStatus,
+  getEditPlanGenerations,
  getGenerationTaskResults,
+  cancelGeneration,
+  copyEditPlan,
 } from "./editPlans"
-export type { EditPlanClipInput } from "./editPlans"

 // 片段 CRUD + 批量操作
 export {
@@ -118,17 +118,6 @@ export interface EditPlanConfig {
  generate_count?: number
  /** 素材模式 */
  material_mode?: string
-  /** 前端标题设置（Step4 自动保存，与 title_config 字段分离，不影响后端渲染） */
-  title?: {
-    text?: string
-    font?: string
-    font_size?: number
-    color?: string
-    position?: string
-    bold?: boolean
-    stroke?: boolean
-    shadow?: boolean
-  }
  /** 预览视频 URL（封面生成用） */
  rendered_storage_key?: string
  /** 生成任务 ID */
@@ -187,6 +176,31 @@ export interface EditPlanListResponse {

 /* ── 生成相关 ── */

+/** 生成响应 */
+export interface GenerateResponse {
+  plan_id: string
+  plan_status: EditPlanStatus
+  generation_task_id: string
+  clip_count: number
+}
+
+/** 模板草稿关联的生成记录 */
+export interface EditPlanGeneration {
+  id: string
+  source_edit_plan_id: string
+  template_id: string
+  asset_ids: string[]
+  status: EditPlanStatus
+  progress: number
+  result_count: number
+  error_message: string
+  error_info: Record<string, unknown>
+  logs: Array<Record<string, unknown>>
+  retry_count: number
+  created_at?: string
+  updated_at?: string
+}
+
 /** 片段生成状态 */
 export interface ClipStatusItem {
  clip_id: string
@@ -199,6 +213,17 @@ export interface ClipStatusItem {
  error_message?: string
 }

+/** 生成状态轮询响应 */
+export interface GenerationStatusResponse {
+  plan_id: string
+  plan_status: EditPlanStatus
+  generation_task_id?: string
+  error_message?: string
+  clips: ClipStatusItem[]
+  error?: string
+  message?: string
+}
+
 /** 生成视频详情 */
 export interface GeneratedVideo {
  id: string
@@ -9,6 +9,8 @@ export type {
  TemplateSegment,
  TemplateListParams,
  TemplateListResponse,
+  GenerateFromTemplateRequest,
+  GenerateFromTemplateResponse,
  CopyTemplateResponse,
 } from "./types"

@@ -22,4 +24,5 @@ export {
  getTemplate,
  toggleFavoriteTemplate,
  copyTemplate,
+  generateFromTemplate,
 } from "./templates"
@@ -5,6 +5,8 @@
 import apiClient from "../client"
 import type {
  CopyTemplateResponse,
+  GenerateFromTemplateRequest,
+  GenerateFromTemplateResponse,
  TemplateItem,
  TemplateListParams,
  TemplateListResponse,
@@ -43,3 +45,15 @@ export const copyTemplate = async (templateId: string): Promise<CopyTemplateResp
  const response = await apiClient.post<CopyTemplateResponse>(`/templates/${templateId}/copy`)
  return response.data
 }
+
+/** 从模板生成 */
+export const generateFromTemplate = async (
+  templateId: string,
+  data?: GenerateFromTemplateRequest,
+): Promise<GenerateFromTemplateResponse> => {
+  const response = await apiClient.post<GenerateFromTemplateResponse>(
+    `/templates/${templateId}/generate`,
+    data,
+  )
+  return response.data
+}
@@ -1,8 +1,7 @@
 import React, { useState, useCallback, useRef, useEffect } from "react"
 import { Modal, Button } from "@/components/ui"
 import { createVoiceClone, toVoiceClone } from "@/api/voice-clone"
-import { uploadAssetDirect, ensureDefaultLibrary } from "@/api/assets"
-import { getOrCreateDefaultProject } from "@/api/projects"
+import { uploadAsset } from "@/api/assets"
 import { PROGRESS_STEPS, ACCEPTED_MIME } from "./constants"
 import { validateFile } from "./utils"
 import { useAudioRecorder } from "./hooks/useAudioRecorder"
@@ -182,15 +181,9 @@ const CloneModal: React.FC<CloneModalProps> = ({ open, onClose, onSuccess }) =>
        })
      }

-      // 获取默认项目和素材库
-      const project = await getOrCreateDefaultProject()
-      const library = await ensureDefaultLibrary({ project_id: project.id, kind: "voice" })
-
-      // 直传到 OSS
-      const uploadResult = await uploadAssetDirect({
-        file: fileToUpload,
-        library_id: library.id,
-      })
+      const formData = new FormData()
+      formData.append("file", fileToUpload)
+      const uploadResult = await uploadAsset(formData)

      // 组件已卸载则中止后续操作
      if (!isMountedRef.current) return
@@ -1,6 +1,6 @@
 import { useRef, useCallback, useEffect } from "react"
 import { createVoiceClone, toVoiceClone } from "@/api/voice-clone"
-import { uploadAssetDirect, ensureDefaultLibrary } from "@/api/assets"
+import { uploadAsset, ensureDefaultLibrary } from "@/api/assets"
 import { getOrCreateDefaultProject } from "@/api/projects"
 import type { VoiceClone } from "@/api/voice-clone"

@@ -62,15 +62,15 @@ export function useCloneSubmit({
        })
      }

-      // 获取默认项目和素材库
+      // 获取默认项目和素材库（后端 /upload 接口必填）
      const project = await getOrCreateDefaultProject()
      const library = await ensureDefaultLibrary({ project_id: project.id, kind: "voice" })

-      // 直传到 OSS
-      const uploadResult = await uploadAssetDirect({
-        file: fileToUpload,
-        library_id: library.id,
-      })
+      const formData = new FormData()
+      formData.append("file", fileToUpload)
+      formData.append("project_id", project.id)
+      formData.append("library_id", library.id)
+      const uploadResult = await uploadAsset(formData)

      // 阶段 2：克隆
      setPhase("cloning")
@@ -71,7 +71,7 @@ export const NAV_ITEMS: NavItem[] = [
  },
  {
    key: "editing-planner",
-    label: "剪辑模板",
+    label: "剪辑编辑器",
    path: "/app/editing-planner",
    icon: React.createElement(EditOutlined),
  },
@@ -133,7 +133,7 @@ export const NAV_GROUPS: NavGroup[] = [
      },
      {
        key: "editing-planner",
-        label: "剪辑模板",
+        label: "剪辑编辑器",
        path: "/app/editing-planner",
        icon: React.createElement(EditOutlined),
      },
@@ -4,7 +4,6 @@
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
 import { useNavigate } from "react-router-dom"
 import * as authApi from "@/api/auth"
-import { scheduleProactiveRefresh, cancelProactiveRefresh } from "@/api/auth/tokenRefresh"
 import { useAuthStore } from "@/store/authStore"

 // 登录 Hook
@@ -32,9 +31,6 @@ export const useLogin = () => {
    const user = await authApi.getCurrentUser()
    setAuth(user, data.access_token, refreshToken)

-    // 启动主动 token 刷新，避免后续请求触发 401
-    scheduleProactiveRefresh()
-
    // 跳转到登录前页面或仪表盘（与 Login.tsx onFinish 保持一致）
    const redirect = localStorage.getItem("login_redirect") || "/app/dashboard"
    localStorage.removeItem("login_redirect")
@@ -77,9 +73,6 @@ export const useWechatCallback = () => {
    const user = await authApi.getCurrentUser()
    setAuth(user, result.access_token, result.refresh_token)

-    // 启动主动 token 刷新
-    scheduleProactiveRefresh()
-
    return { ...result, user }
  }

@@ -128,7 +121,6 @@ export const useLogout = () => {
    } catch (error) {
      // 即使登出失败也清除本地状态
    } finally {
-      cancelProactiveRefresh()
      clearAuth()
      queryClient.clear()
      navigate("/")
@@ -9,13 +9,6 @@ import { QueryClient, QueryClientProvider } from "@tanstack/react-query"
 import { ConfigProvider, App as AntApp } from "antd"
 import zhCN from "antd/locale/zh_CN"
 import router from "./router"
-import { scheduleProactiveRefresh } from "./api/auth/tokenRefresh"
-
-// 应用启动时，如果用户已登录，立即调度主动 token 刷新
-// 这样可以在 token 过期前自动刷新，避免 API 请求触发 401
-if (localStorage.getItem("access_token")) {
-  scheduleProactiveRefresh()
-}
 import "./index.css"
 import "./styles/global.css"

@@ -0,0 +1,116 @@
+/**
+ * 生成历史弹窗 — 展示当前模板草稿的生成任务记录
+ * 从 EditingPlanner 拆分，避免主文件过大
+ */
+import React from "react"
+import { CloseOutlined, InboxOutlined } from "@ant-design/icons"
+import type { EditPlanGeneration } from "@/api/template-editor"
+import { PLAN_STATUS_LABELS } from "@/api/template-editor"
+
+interface GenerationHistoryModalProps {
+  open: boolean
+  loading: boolean
+  history: EditPlanGeneration[]
+  onClose: () => void
+  onCancel?: (taskId: string) => void
+  cancelLoading?: boolean
+}
+
+const GenerationHistoryModal: React.FC<GenerationHistoryModalProps> = ({
+  open,
+  loading,
+  history,
+  onClose,
+  onCancel,
+  cancelLoading,
+}) => {
+  if (!open) return null
+
+  return (
+    <div className="ep-modal-overlay" onClick={onClose}>
+      <div className="ep-modal ep-gh-modal" onClick={(e) => e.stopPropagation()}>
+        <div className="ep-modal-header">
+          <h3>生成历史</h3>
+          <button className="ep-modal-close" onClick={onClose}>
+            <CloseOutlined />
+          </button>
+        </div>
+        <div className="ep-modal-body ep-gh-body">
+          {loading ? (
+            <div className="ep-gh-empty">
+              <div className="ep-skeleton">
+                <div className="ep-skeleton-item ep-skeleton-item--header" />
+                <div className="ep-skeleton-item" />
+                <div className="ep-skeleton-item" />
+                <div className="ep-skeleton-item" />
+              </div>
+            </div>
+          ) : history.length === 0 ? (
+            <div className="ep-gh-empty">
+              <InboxOutlined style={{ fontSize: 32, opacity: 0.4 }} />
+              <span>暂无生成记录</span>
+            </div>
+          ) : (
+            <table className="ep-gh-table">
+              <thead>
+                <tr className="ep-gh-table-header-row">
+                  <th className="ep-gh-th">任务ID</th>
+                  <th className="ep-gh-th">状态</th>
+                  <th className="ep-gh-th">创建时间</th>
+                  <th className="ep-gh-th">更新时间</th>
+                  {onCancel && <th className="ep-gh-th">操作</th>}
+                </tr>
+              </thead>
+              <tbody>
+                {history.map((gen) => {
+                  const statusClass = `ep-gh-status-tag--${gen.status}`
+                  const canCancel = gen.status === "rendering" || gen.status === "editing"
+                  return (
+                    <tr key={gen.id} className="ep-gh-table-row">
+                      <td className="ep-gh-td ep-gh-td-id">
+                        {gen.id ? `${gen.id.slice(0, 8)}...` : "—"}
+                      </td>
+                      <td className="ep-gh-td">
+                        <span className={`ep-gh-status-tag ${statusClass}`}>
+                          {PLAN_STATUS_LABELS[gen.status] || gen.status}
+                        </span>
+                      </td>
+                      <td className="ep-gh-td ep-gh-td-time">
+                        {gen.created_at ? new Date(gen.created_at).toLocaleString("zh-CN") : "—"}
+                      </td>
+                      <td className="ep-gh-td ep-gh-td-time">
+                        {gen.updated_at ? new Date(gen.updated_at).toLocaleString("zh-CN") : "—"}
+                      </td>
+                      {onCancel && (
+                        <td className="ep-gh-td ep-gh-td-action">
+                          {canCancel ? (
+                            <button
+                              className="ep-gh-cancel-btn"
+                              onClick={() => onCancel(gen.id)}
+                              disabled={cancelLoading}
+                            >
+                              取消
+                            </button>
+                          ) : (
+                            <span className="ep-gh-action-placeholder">—</span>
+                          )}
+                        </td>
+                      )}
+                    </tr>
+                  )
+                })}
+              </tbody>
+            </table>
+          )}
+        </div>
+        <div className="ep-modal-footer">
+          <button className="ep-btn ep-btn-secondary" onClick={onClose}>
+            关闭
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default GenerationHistoryModal
@@ -0,0 +1,6 @@
+/**
+ * 生成进度弹窗 — 入口文件（向后兼容）
+ * 实际实现已移至 ./generation-progress-modal/ 目录
+ */
+export { default } from "./generation-progress-modal"
+export type { GenPhase, GenerationProgressModalProps } from "./generation-progress-modal"
@@ -16,17 +16,9 @@ interface BgmSelectorProps {
  onClose: () => void
  config: BgmMixConfig
  onChange: (config: BgmMixConfig) => void
-  /** 模板/草稿 ID，用于请求 BGM 预设 */
-  templateId?: string
 }

-const BgmSelector: React.FC<BgmSelectorProps> = ({
-  open,
-  onClose,
-  config,
-  onChange,
-  templateId,
-}) => {
+const BgmSelector: React.FC<BgmSelectorProps> = ({ open, onClose, config, onChange }) => {
  const {
    presets,
    loading,
@@ -38,7 +30,7 @@ const BgmSelector: React.FC<BgmSelectorProps> = ({
    loadPresets,
    handlePreview,
    stopPreview,
-  } = useBgmSelector(open, templateId)
+  } = useBgmSelector(open)

  /* ── 选中 BGM ── */
  const handleSelect = useCallback(
@@ -19,7 +19,7 @@ export const CATEGORY_LIST: {
 * BGM 选择器数据与交互 Hook
 * 封装列表加载、搜索、分类筛选、试听播放逻辑
 */
-export function useBgmSelector(open: boolean, templateId?: string) {
+export function useBgmSelector(open: boolean) {
  const [presets, setPresets] = useState<BgmPreset[]>([])
  const [loading, setLoading] = useState(false)
  const [activeCategory, setActiveCategory] = useState<BgmCategory | "all">("all")
@@ -30,23 +30,19 @@ export function useBgmSelector(open: boolean, templateId?: string) {

  /* ── 加载 BGM 列表 ── */
  const loadPresets = useCallback(async () => {
-    if (!templateId) {
-      setPresets([])
-      return
-    }
    setLoading(true)
    try {
      const params: { category?: string; keyword?: string } = {}
      if (activeCategory !== "all") params.category = activeCategory
      if (keyword.trim()) params.keyword = keyword.trim()
-      const data = await getBgmPresets(templateId, params)
+      const data = await getBgmPresets(params)
      setPresets(data)
    } catch {
      message.error("加载 BGM 列表失败")
    } finally {
      setLoading(false)
    }
-  }, [activeCategory, keyword, templateId])
+  }, [activeCategory, keyword])

  useEffect(() => {
    if (open) loadPresets()
@@ -0,0 +1,65 @@
+import React from "react"
+import { Modal } from "@/components/ui"
+import type { TaskItem } from "@/api/tasks"
+import { getStepLabel, getStatusColor } from "./constants"
+
+interface ProgressPhaseProps {
+  open: boolean
+  task: TaskItem | null
+  onCancel: () => void
+}
+
+/** progress（进度轮询）阶段弹窗 */
+export const ProgressPhase: React.FC<ProgressPhaseProps> = ({ open, task, onCancel }) => {
+  const progress = task?.progress ?? 0
+  const status = task?.status ?? ""
+  const currentStep = task?.current_step ?? ""
+  const userMessage = task?.user_message ?? ""
+  const stepColor = getStatusColor(status, currentStep)
+
+  return (
+    <Modal open={open} title="视频生成中" footer={null} onCancel={onCancel} closable width={480}>
+      <div className="ep-gen-progress">
+        {/* 进度环 */}
+        <div className="ep-gen-progress-ring-wrap">
+          <svg className="ep-gen-progress-ring" viewBox="0 0 120 120">
+            <circle className="ep-gen-progress-ring-bg" cx="60" cy="60" r="52" />
+            <circle
+              className="ep-gen-progress-ring-fill"
+              cx="60"
+              cy="60"
+              r="52"
+              style={{
+                strokeDasharray: `${2 * Math.PI * 52}`,
+                strokeDashoffset: `${2 * Math.PI * 52 * (1 - progress / 100)}`,
+                stroke: stepColor,
+              }}
+            />
+          </svg>
+          <span className="ep-gen-progress-pct" style={{ color: stepColor }}>
+            {progress}%
+          </span>
+        </div>
+
+        {/* 当前步骤 */}
+        <div className="ep-gen-step-text">
+          {userMessage || getStepLabel(currentStep) || "处理中…"}
+        </div>
+
+        {/* 进度条 */}
+        <div className="ep-gen-progress-bar">
+          <div
+            className="ep-gen-progress-bar-fill"
+            style={{
+              width: `${progress}%`,
+              backgroundColor: stepColor,
+            }}
+          />
+        </div>
+
+        {/* 任务 ID */}
+        {task?.id && <div className="ep-gen-task-id">任务 ID: {task.id}</div>}
+      </div>
+    </Modal>
+  )
+}
@@ -0,0 +1,82 @@
+import React from "react"
+import { Modal, Button } from "@/components/ui"
+import type { TaskItem } from "@/api/tasks"
+
+interface ResultPhaseProps {
+  open: boolean
+  phase: "completed" | "failed"
+  task: TaskItem | null
+  onCancel: () => void
+  onRetry?: () => void
+  onClose?: () => void
+}
+
+/** completed / failed（结果）阶段弹窗 */
+export const ResultPhase: React.FC<ResultPhaseProps> = ({
+  open,
+  phase,
+  task,
+  onCancel,
+  onRetry,
+  onClose,
+}) => {
+  const userMessage = task?.user_message ?? ""
+  const errorMessage = task?.error_message ?? ""
+  const retryable = task?.retryable ?? false
+  const handleClose = onClose || onCancel
+
+  if (phase === "completed") {
+    return (
+      <Modal
+        open={open}
+        title="✅ 生成完成"
+        footer={null}
+        onCancel={handleClose}
+        closable
+        width={440}
+      >
+        <div className="ep-gen-result">
+          <div className="ep-gen-result-icon">🎉</div>
+          <div className="ep-gen-result-title">视频生成完成！</div>
+          {userMessage && <div className="ep-gen-result-msg">{userMessage}</div>}
+          <div className="ep-gen-result-actions">
+            <Button buttonType="primary" onClick={handleClose}>
+              查看结果
+            </Button>
+          </div>
+        </div>
+      </Modal>
+    )
+  }
+
+  return (
+    <Modal
+      open={open}
+      title="❌ 生成失败"
+      footer={null}
+      onCancel={handleClose}
+      closable
+      width={440}
+    >
+      <div className="ep-gen-result ep-gen-result--error">
+        <div className="ep-gen-result-icon">😥</div>
+        <div className="ep-gen-result-title">视频生成失败</div>
+        {(errorMessage || userMessage) && (
+          <div className="ep-gen-result-msg ep-gen-result-msg--error">
+            {errorMessage || userMessage}
+          </div>
+        )}
+        <div className="ep-gen-result-actions">
+          {retryable && onRetry && (
+            <Button buttonType="primary" onClick={onRetry}>
+              🔄 重试
+            </Button>
+          )}
+          <Button buttonType="secondary" onClick={handleClose}>
+            关闭
+          </Button>
+        </div>
+      </div>
+    </Modal>
+  )
+}
@@ -0,0 +1,53 @@
+import React from "react"
+import { Modal } from "@/components/ui"
+
+interface SetupPhaseProps {
+  open: boolean
+  voiceoverDuration: number | null
+  estimatedDuration: number
+  submitting: boolean
+  onDurationChange: (v: number | null) => void
+  onGenerate: () => void
+  onCancel: () => void
+}
+
+/** setup（配置）阶段弹窗 */
+export const SetupPhase: React.FC<SetupPhaseProps> = ({
+  open,
+  voiceoverDuration,
+  estimatedDuration,
+  submitting,
+  onDurationChange,
+  onGenerate,
+  onCancel,
+}) => (
+  <Modal
+    open={open}
+    title="使用模板生成视频"
+    confirmLoading={submitting}
+    onOk={onGenerate}
+    onCancel={onCancel}
+    okText="开始生成"
+    cancelText="取消"
+    width={440}
+  >
+    <div className="ep-gen-setup">
+      <label className="ep-gen-field-label">配音时长（秒）</label>
+      <input
+        type="number"
+        className="ep-gen-duration-input"
+        placeholder="请输入配音时长"
+        value={voiceoverDuration ?? ""}
+        onChange={(e) => {
+          const v = e.target.value ? Number(e.target.value) : null
+          onDurationChange(v)
+        }}
+        min={1}
+        max={600}
+      />
+      <div className="ep-gen-estimate">
+        预估总时长：<strong>{estimatedDuration}s</strong>
+      </div>
+    </div>
+  </Modal>
+)
@@ -0,0 +1,31 @@
+/* ──────────── 步骤文案映射 ──────────── */
+
+export const STEP_LABELS: Record<string, string> = {
+  queued: "排队中…",
+  preparing: "准备素材…",
+  generating_video: "渲染视频中…",
+  adding_effects: "添加特效…",
+  composing: "合成中…",
+  encoding: "编码输出中…",
+  completed: "生成完成！",
+  failed: "生成失败",
+}
+
+export const getStepLabel = (step: string) => STEP_LABELS[step] || step.replace(/_/g, " ")
+
+/* ──────────── 状态徽标颜色 ──────────── */
+
+export const STATUS_COLOR: Record<string, string> = {
+  queued: "#6b7280",
+  pending: "#6b7280",
+  preparing: "#f59e0b",
+  generating_video: "#4f46e5",
+  adding_effects: "#7c3aed",
+  composing: "#2563eb",
+  encoding: "#0891b2",
+  completed: "#10b981",
+  failed: "#ef4444",
+}
+
+export const getStatusColor = (status: string, currentStep: string) =>
+  STATUS_COLOR[status] || STATUS_COLOR[currentStep] || "#4f46e5"
@@ -0,0 +1,70 @@
+/**
+ * 生成进度弹窗 — 任务 2.17
+ * 三阶段 UI：setup（配置）→ progress（进度轮询）→ completed / failed（结果）
+ * V21 设计系统，CSS 类名前缀 ep-gen-
+ */
+import React, { useEffect, useRef } from "react"
+import type { GenPhase, GenerationProgressModalProps } from "./types"
+import { SetupPhase } from "./SetupPhase"
+import { ProgressPhase } from "./ProgressPhase"
+import { ResultPhase } from "./ResultPhase"
+
+/* 重新导出类型，保持向后兼容 */
+export type { GenPhase, GenerationProgressModalProps }
+
+const GenerationProgressModal: React.FC<GenerationProgressModalProps> = ({
+  open,
+  phase,
+  voiceoverDuration,
+  estimatedDuration,
+  onDurationChange,
+  onGenerate,
+  task,
+  submitting,
+  onCancel,
+  onRetry,
+  onClose,
+}) => {
+  /* 关闭弹窗时重置（避免下次打开残留旧状态） */
+  const prevOpen = useRef(false)
+  useEffect(() => {
+    if (prevOpen.current && !open) {
+      /* modal just closed — parent handles reset */
+    }
+    prevOpen.current = open
+  }, [open])
+
+  /* setup 阶段 */
+  if (phase === "setup") {
+    return (
+      <SetupPhase
+        open={open}
+        voiceoverDuration={voiceoverDuration}
+        estimatedDuration={estimatedDuration}
+        submitting={submitting}
+        onDurationChange={onDurationChange}
+        onGenerate={onGenerate}
+        onCancel={onCancel}
+      />
+    )
+  }
+
+  /* progress 阶段 */
+  if (phase === "progress") {
+    return <ProgressPhase open={open} task={task} onCancel={onCancel} />
+  }
+
+  /* completed / failed 阶段 */
+  return (
+    <ResultPhase
+      open={open}
+      phase={phase as "completed" | "failed"}
+      task={task}
+      onCancel={onCancel}
+      onRetry={onRetry}
+      onClose={onClose}
+    />
+  )
+}
+
+export default GenerationProgressModal
@@ -0,0 +1,23 @@
+import type { TaskItem } from "@/api/tasks"
+
+export type GenPhase = "setup" | "progress" | "completed" | "failed"
+
+export interface GenerationProgressModalProps {
+  open: boolean
+  phase: GenPhase
+
+  /* setup 阶段 */
+  voiceoverDuration: number | null
+  estimatedDuration: number
+  onDurationChange: (v: number | null) => void
+  onGenerate: () => void
+
+  /* progress / 结果阶段 */
+  task: TaskItem | null
+
+  /* 通用 */
+  submitting: boolean
+  onCancel: () => void
+  onRetry?: () => void
+  onClose?: () => void
+}
@@ -1,37 +1,30 @@
 /**
- * 智能剪辑页面 — 前端实时预览架构
- * 7 步向导：选择模板 → 素材 → 配音 → 标题 → 预览 → 封面 → 确认生成
+ * 智能剪辑页面 — V22 多预览 + 配音前置
+ * 7 步向导：选择模板 → 选择素材 → 选择配音 → 生成预览 → 选择标题 → 选择封面 → 确认生成
 * 左右布局：左侧 generate-form + 右侧 generate-preview
- *
- * 架构：
- * - Step4+ 右侧预览面板使用 FrontendPreviewPlayer 实时播放素材片段
- * - 标题样式编辑时 CSS 层实时叠加预览，所见即所得
- * - 点"确认生成"时调用 createGenerationTask 创建一次服务器渲染任务
+ * 主组件仅保留整体布局与事件编排
+ * 状态管理 → hooks/useGenerateFormState
+ * 步骤导航 → hooks/useStepNavigation
+ * 步骤内容 → components/GenerateStepContent
+ * 底部按钮 → components/GenerateStepActions
+ * 生成核心逻辑 → hooks/useGenerateVideo
 */
-import React, { useMemo, useState, useEffect, useRef } from "react"
+import React, { useState, useMemo } from "react"
 import { Modal, message } from "antd"
 import { useNavigate } from "react-router-dom"
 import type { VoiceClone } from "@/api/voice-clone"
-import { useQuery } from "@tanstack/react-query"
 import { useCloneProgress } from "@/hooks/useCloneProgress"
 import CloneModal from "@/components/voice/CloneModal"
 import GenerateHeader from "./components/GenerateHeader"
-import {
-  calculateTotalVideoDuration,
-  estimateTotalVideoDuration,
-} from "./utils/calculateTotalVideoDuration"
 import GenerateStepsBar from "./components/GenerateStepsBar"
 import GenerateResultPanel from "./components/GenerateResultPanel"
-import FrontendPreviewPlayer from "./components/FrontendPreviewPlayer"
+import PreviewVideoPanel from "./components/PreviewVideoPanel"
 import GenerateStepContent from "./components/GenerateStepContent"
 import GenerateStepActions from "./components/GenerateStepActions"
 import { useGenerateFormState } from "./hooks/useGenerateFormState"
 import { useStepNavigation } from "./hooks/useStepNavigation"
 import { useGenerateVideo } from "./hooks/useGenerateVideo"
-import { usePreviewAssets } from "./hooks/usePreviewAssets"
-import { useTitleStyleUpdaters } from "./hooks/useStep4Title/useTitleStyleUpdaters"
-import { getAssetsByKind } from "@/api/assets"
-import { previewTts } from "@/api/tts"
+import { useStep4Preview } from "./hooks/useStep4Preview"
 import "./generate.css"

 const GeneratePage: React.FC = () => {
@@ -72,76 +65,12 @@ const GeneratePage: React.FC = () => {
    autoSubtitles,
    bgm,
    editPlanId,
-    sourceEditPlanId,
    previewVideo,
    setPreviewVideo,
    previewModalOpen,
    setPreviewModalOpen,
-    previewTaskId,
-    setPreviewTaskId,
-    storedSourceEditPlanId,
-    setStoredSourceEditPlanId,
  } = formState

-  /* ── 标题样式回调 ── */
-  const styleUpdaters = useTitleStyleUpdaters({
-    titleSettings,
-    onTitleSettingsChange: setTitleSettings,
-  })
-
-  /* ── 配音预览音频（TTS 试听）── */
-  const { data: voiceMaterials = [] } = useQuery({
-    queryKey: ["assets", "voice"],
-    queryFn: () => getAssetsByKind("voice", { limit: 50 }),
-  })
-
-  const [previewVoiceAudioUrl, setPreviewVoiceAudioUrl] = useState<string | null>(null)
-  const ttsAbortRef = useRef<AbortController | null>(null)
-
-  useEffect(() => {
-    // 如果 selectedVoice 是已上传的配音素材，直接用 file_url
-    const voiceAsset = voiceMaterials.find((m) => m.id === selectedVoice)
-    if (voiceAsset?.file_url) {
-      setPreviewVoiceAudioUrl(voiceAsset.file_url)
-      return
-    }
-
-    // 没有选中的 voice 或标题，跳过
-    const voiceId = selectedClonedVoice || selectedVoice
-    if (!voiceId || !titleSettings.title) {
-      setPreviewVoiceAudioUrl(null)
-      return
-    }
-
-    // 预设音色 / 克隆音色 → 调 TTS 合成
-    ttsAbortRef.current?.abort()
-    const controller = new AbortController()
-    ttsAbortRef.current = controller
-    let cancelled = false
-
-    previewTts({
-      text: titleSettings.title,
-      voice_id: voiceId,
-    })
-      .then((res) => {
-        if (!cancelled && res.audio_url) {
-          setPreviewVoiceAudioUrl(res.audio_url)
-        }
-      })
-      .catch((err) => {
-        if (!cancelled) {
-          console.warn("[预览配音生成失败]", err)
-          setPreviewVoiceAudioUrl(null)
-        }
-      })
-
-    return () => {
-      cancelled = true
-      controller.abort()
-    }
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [selectedVoice, selectedClonedVoice, titleSettings.title, voiceMaterials])
-
  /* ── 克隆声音 ── */
  const { clones: clonedVoices, addClone, hasProcessing } = useCloneProgress()

@@ -151,37 +80,35 @@ const GeneratePage: React.FC = () => {
    message.success("音色克隆成功！")
  }

-  /* ── 素材 ID 列表 ── */
-  const previewAssetIds = useMemo(
-    () => (materialMode === "auto" ? smartSelectedIds : selectedMaterials),
-    [materialMode, smartSelectedIds, selectedMaterials],
-  )
+  /* ── 预览数量（多预览） ── */
+  const [previewCount, setPreviewCount] = useState(1)

-  /* ── 当前模板对象 ── */
-  const currentTemplate = useMemo(
-    () => userTemplates.find((t) => t.id === selectedTemplate) || null,
-    [userTemplates, selectedTemplate],
-  )
+  /* ── 根据 voiceMode 构建 voiceIds 传给预览接口 ── */
+  /* selectedVoice / selectedClonedVoice 均为 string 类型（voice ID），
+     见 useGenerateFormState 返回值类型定义 */
+  const previewVoiceIds = useMemo((): string[] => {
+    if (voiceMode === "clone") {
+      const id: string = selectedClonedVoice
+      return id ? [id] : []
+    }
+    // preset / custom 模式
+    const id: string = selectedVoice
+    return id ? [id] : []
+  }, [voiceMode, selectedVoice, selectedClonedVoice])

-  /* ── BGM 配置 ── */
-  const bgmConfig = useMemo(
-    () => ({
-      enabled: bgm,
-      music_id: currentTemplate?.bgm_config?.music_id || "",
-    }),
-    [bgm, currentTemplate],
-  )
-
-  /* ── 加载素材详情（供前端预览播放器使用 + 配音时长校验） ── */
-  const previewAssetsEnabled = previewAssetIds.length > 0
-  const { assets: previewAssets } = usePreviewAssets(previewAssetIds, previewAssetsEnabled)
-
-  /* ── 视频总时长计算 ── */
-  const totalVideoDuration = useMemo(() => {
-    const exact = calculateTotalVideoDuration(previewAssets, currentTemplate ?? undefined)
-    if (exact > 0) return exact
-    return estimateTotalVideoDuration(currentTemplate ?? undefined)
-  }, [previewAssets, currentTemplate])
+  /* ── Step4 预览生成（多预览 + voice_ids） ── */
+  const step4Preview = useStep4Preview({
+    templates: userTemplates,
+    selectedTemplate,
+    materialMode,
+    selectedMaterials,
+    smartSelectedIds,
+    duration,
+    videoRatio,
+    voiceIds: previewVoiceIds,
+    voiceLibraryId: selectedVoice || undefined,
+    previewCount,
+  })

  /* ── 步骤导航 ── */
  const { goNext, goPrev } = useStepNavigation({
@@ -192,6 +119,7 @@ const GeneratePage: React.FC = () => {
    selectedMaterials,
    smartSelectedIds,
    titleSettings,
+    previewReady: step4Preview.canProceed,
  })

  /* ── 视频生成核心逻辑 ── */
@@ -222,25 +150,22 @@ const GeneratePage: React.FC = () => {
    autoSubtitles,
    bgm,
    generateCount,
-    sourceEditPlanId: storedSourceEditPlanId || sourceEditPlanId,
-    previewTaskId,
-    bgmConfig,
-    onGenerationSuccess: () => {
-      setPreviewTaskId(null)
-      setStoredSourceEditPlanId(null)
-    },
+    previewTaskId: step4Preview.selectedTaskId,
  })

  /* ================================================================
-     渲染
+     渲染 — 主页面
     ================================================================ */

  return (
    <div className="xx-generate-page">
+      {/* ── 页头 ── */}
      <GenerateHeader fromEditPlan={!!editPlanId} />

+      {/* ── 步骤条 ── */}
      <GenerateStepsBar currentStep={currentStep} onStepClick={setCurrentStep} />

+      {/* ── 主布局 ── */}
      <div className="xx-generate-layout">
        {/* ════ 左侧：表单区 ════ */}
        <div className="xx-generate-form">
@@ -257,26 +182,11 @@ const GeneratePage: React.FC = () => {
            onSmartSelectedIdsChange={setSmartSelectedIds}
            titleSettings={titleSettings}
            onTitleSettingsChange={setTitleSettings}
-            onUpdatePosition={styleUpdaters.updatePosition}
-            onUpdateFont={styleUpdaters.updateFont}
-            onUpdateSize={styleUpdaters.updateSize}
-            onToggleBold={styleUpdaters.toggleBold}
-            onToggleItalic={styleUpdaters.toggleItalic}
-            onToggleStroke={styleUpdaters.toggleStroke}
-            onToggleShadow={styleUpdaters.toggleShadow}
-            onApplyPreset={styleUpdaters.applyPreset}
-            activePreset={styleUpdaters.activePreset}
-            titlePresets={styleUpdaters.titlePresets}
-            onPreviewTaskCreated={setPreviewTaskId}
-            onSourceEditPlanIdExtracted={setStoredSourceEditPlanId}
-            bgm={bgm}
-            bgmConfig={bgmConfig}
            coverSettings={coverSettings}
            onCoverSettingsChange={setCoverSettings}
            duration={duration}
            selectedVoice={selectedVoice}
            onSelectedVoiceChange={setSelectedVoice}
-            totalVideoDuration={totalVideoDuration}
            voiceMode={voiceMode}
            onVoiceModeChange={setVoiceMode}
            selectedClonedVoice={selectedClonedVoice}
@@ -296,6 +206,21 @@ const GeneratePage: React.FC = () => {
            onRetry={handleRetryGenerate}
            onDismissError={handleDismissError}
            presetVoices={presetVoices}
+            videoRatio={videoRatio}
+            /* Step4 多预览 */
+            previewCount={previewCount}
+            onPreviewCountChange={setPreviewCount}
+            previewItems={step4Preview.items}
+            previewSelectedIndex={step4Preview.selectedIndex}
+            onSelectPreview={step4Preview.setSelectedIndex}
+            previewOverallStatus={step4Preview.previewStatus}
+            previewOverallError={step4Preview.previewError}
+            previewOverallProgress={step4Preview.progress}
+            previewAnyGenerating={step4Preview.anyGenerating}
+            previewTemplateName={step4Preview.templateName}
+            previewMaterialCount={step4Preview.materialCount}
+            onGeneratePreview={step4Preview.generatePreview}
+            onRegeneratePreview={step4Preview.regeneratePreview}
          />

          <GenerateStepActions
@@ -309,29 +234,24 @@ const GeneratePage: React.FC = () => {
          />
        </div>

-        {/* ════ 右侧：预览 + 结果 ════ */}
+        {/* ════ 右侧：预览 + 生成结果 ════ */}
        <div className="xx-generate-right-col">
-          {currentStep >= 4 && !!currentTemplate && (
-            <FrontendPreviewPlayer
-              assets={previewAssets}
-              template={currentTemplate}
+          {/* 预览视频面板（Step4+ 常驻，展示选中的预览） */}
+          {currentStep >= 4 && (
+            <PreviewVideoPanel
+              previewStatus={step4Preview.previewStatus}
+              previewResult={step4Preview.previewResult}
+              previewError={step4Preview.previewError}
+              progress={step4Preview.progress}
              videoRatio={videoRatio}
-              ready={previewAssets.length > 0}
-              voiceAudioUrl={previewVoiceAudioUrl || undefined}
-              titleSettings={{
-                title: titleSettings.title,
-                size: titleSettings.size,
-                font: titleSettings.font,
-                color: titleSettings.color,
-                position: titleSettings.position as "top" | "center" | "bottom",
-                bold: titleSettings.bold,
-                italic: titleSettings.italic,
-                stroke: titleSettings.stroke,
-                shadow: titleSettings.shadow,
-              }}
+              onRegenerate={step4Preview.regeneratePreview}
+              titleText={titleSettings.title}
+              titleSettings={currentStep >= 5 ? titleSettings : undefined}
            />
          )}
-          {currentStep >= 6 && (
+
+          {/* 正式生成结果（Step5+ 才显示） */}
+          {currentStep >= 5 && (
            <GenerateResultPanel
              generated={generated}
              generating={generating}
@@ -350,9 +270,8 @@ const GeneratePage: React.FC = () => {
        </div>
      </div>

-      {/* 视频预览弹窗 */}
+      {/* ── 视频预览弹窗 ── */}
      <Modal
-        className="xx-preview-modal"
        open={previewModalOpen}
        onCancel={() => setPreviewModalOpen(false)}
        footer={null}
@@ -373,7 +292,7 @@ const GeneratePage: React.FC = () => {
        )}
      </Modal>

-      {/* 音色克隆弹窗 */}
+      {/* ── 音色克隆弹窗 ── */}
      <CloneModal
        open={cloneModalOpen}
        onClose={() => setCloneModalOpen(false)}
@@ -1,696 +0,0 @@
-/**
- * 前端预览播放器 — Canvas + WebCodecs 方案
- *
- * 架构：
- * - 浏览器支持 WebCodecs → Canvas 渲染（帧级精确控制 + 标题合成）
- * - 浏览器不支持 → fallback 到多 video 元素方案
- *
- * 对外 API 不变：assets, template, videoRatio, ready, voiceAudioUrl
- */
-import React, { useMemo, useCallback, useState, useRef, useEffect } from "react"
-import {
-  PlayCircleOutlined,
-  PauseCircleOutlined,
-  SoundOutlined,
-  LoadingOutlined,
-} from "@ant-design/icons"
-import type { AssetItem } from "@/api/assets"
-import type { EditingTemplate } from "@/api/editing-planner"
-import { useSegmentScheduler, type PlaybackSegment } from "../hooks/useSegmentScheduler"
-import { useCanvasPlayer } from "../hooks/useCanvasPlayer"
-
-interface FrontendPreviewPlayerProps {
-  assets: AssetItem[]
-  template: EditingTemplate | null
-  videoRatio: string
-  ready: boolean
-  voiceAudioUrl?: string
-  titleSettings?: {
-    title: string
-    size: number
-    font: string
-    color: string
-    position: "top" | "center" | "bottom"
-    bold?: boolean
-    italic?: boolean
-    stroke?: boolean
-    shadow?: boolean
-  }
-}
-
-function formatTime(seconds: number): string {
-  const m = Math.floor(seconds / 60)
-  const s = Math.floor(seconds % 60)
-  return `${m}:${s.toString().padStart(2, "0")}`
-}
-
-/**
- * 将素材映射为播放片段（复用原逻辑）
- */
-function buildPlaybackSegments(
-  assets: AssetItem[],
-  template: EditingTemplate | null,
-): PlaybackSegment[] {
-  if (!assets.length) return []
-
-  const templateSegments = template?.segments || []
-  const segments: PlaybackSegment[] = []
-
-  assets.forEach((asset, i) => {
-    const assetDuration = asset.duration || asset.metadata?.duration || 30
-    const tplSeg = templateSegments[i] || templateSegments[templateSegments.length - 1]
-    const segDuration = tplSeg
-      ? Math.min(tplSeg.duration_max, Math.max(tplSeg.duration_min, assetDuration))
-      : Math.min(assetDuration, 10)
-
-    const startTime = 0
-    const endTime = Math.min(startTime + segDuration, assetDuration)
-    const videoUrl = asset.file_url || asset.storage_key
-
-    segments.push({ assetId: asset.id, videoUrl, startTime, endTime, order: i })
-  })
-
-  return segments
-}
-
-const FrontendPreviewPlayer: React.FC<FrontendPreviewPlayerProps> = ({
-  assets,
-  template,
-  videoRatio,
-  ready,
-  voiceAudioUrl,
-  titleSettings,
-}) => {
-  const segments = useMemo(() => buildPlaybackSegments(assets, template), [assets, template])
-
-  // ── ASS 坐标系参数（与后端 ass_subtitle_builder.py 一致） ──
-  const TITLE_MARGIN_TOP = 60
-  const TITLE_MARGIN_BOTTOM = 60
-  const TITLE_MARGIN_SIDE = 40
-  const playRes = (() => {
-    switch (videoRatio) {
-      case "16:9":
-        return { width: 1920, height: 1080 }
-      case "1:1":
-        return { width: 1080, height: 1080 }
-      case "9:16":
-      default:
-        return { width: 1080, height: 1920 }
-    }
-  })()
-  const playerContainerRef = useRef<HTMLDivElement>(null)
-  const [containerHeight, setContainerHeight] = useState(0)
-  useEffect(() => {
-    const el = playerContainerRef.current
-    if (!el) return
-    const ro = new ResizeObserver((entries) => {
-      for (const entry of entries) {
-        const h = entry.contentRect.height
-        if (h > 0) setContainerHeight(h)
-      }
-    })
-    ro.observe(el)
-    const rect = el.getBoundingClientRect()
-    if (rect.height > 0) setContainerHeight(rect.height)
-    return () => ro.disconnect()
-  }, [])
-
-  // 标题字号按容器高度与 PlayResY 的比例缩放
-  const titleFontSizePx =
-    containerHeight > 0
-      ? ((titleSettings?.size ?? 36) / playRes.height) * containerHeight
-      : (titleSettings?.size ?? 36)
-  const titleSidePct = (TITLE_MARGIN_SIDE / playRes.width) * 100
-  const titleTopPct = (TITLE_MARGIN_TOP / playRes.height) * 100
-  const titleBottomPct = (TITLE_MARGIN_BOTTOM / playRes.height) * 100
-  // 描边/阴影也要按缩放比例放大
-  const titleScale = containerHeight > 0 ? containerHeight / playRes.height : 1
-  const titleStrokeWidth = Math.max(1, 2 * titleScale)
-  const titleShadowBlur = 4 * titleScale
-  const titleShadowOffset = 2 * titleScale
-
-  // 默认走原生 video 播放（浏览器硬件解码，独立线程，不阻塞 UI）
-  // WebCodecs 仅在明确需要时启用（保留代码作为兜底）
-  const useWebCodecs = false
-
-  // ── 两条路径共用同一个 canvas ref（fallback 路径不使用） ──
-  const canvasRef = useRef<HTMLCanvasElement>(null)
-
-  // ── Canvas 播放器（WebCodecs 路径） ──
-  const canvasTitle = titleSettings
-    ? {
-        text: titleSettings.title || "标题预览",
-        fontSize: titleSettings.size,
-        fontFamily: titleSettings.font || "思源黑体",
-        color: titleSettings.color || "#ffffff",
-        position: titleSettings.position || "bottom",
-        bold: titleSettings.bold,
-        stroke: titleSettings.stroke,
-        shadow: titleSettings.shadow,
-      }
-    : undefined
-
-  const canvasSegments = useMemo(
-    () =>
-      segments.map((s) => ({
-        assetId: s.assetId,
-        videoUrl: s.videoUrl,
-        startTime: s.startTime,
-        endTime: s.endTime,
-      })),
-    [segments],
-  )
-
-  // WebCodecs 解码失败后强制走 video fallback
-  const [forceVideoFallback, setForceVideoFallback] = useState(false)
-
-  const handleCanvasError = useCallback((err: Error) => {
-    console.error("[FrontendPreviewPlayer] Canvas decode Error, switching to video fallback:", err)
-    setForceVideoFallback(true)
-  }, [])
-
-  const { state: canvasState, controls: canvasControls } = useCanvasPlayer(
-    canvasRef,
-    useWebCodecs && !forceVideoFallback ? canvasSegments : [],
-    useWebCodecs && !forceVideoFallback ? canvasTitle : undefined,
-    handleCanvasError,
-    useWebCodecs && !forceVideoFallback,
-  )
-
-  // WebCodecs 报告解码失败时自动切换到 video fallback
-  useEffect(() => {
-    if (canvasState.hasDecodeError && !forceVideoFallback) {
-      console.warn("[FrontendPreviewPlayer] hasDecodeError detected, forcing video fallback")
-      setForceVideoFallback(true)
-    }
-  }, [canvasState.hasDecodeError, forceVideoFallback])
-
-  // ── Video 播放器（fallback 路径） ──
-  const {
-    isPlaying: videoIsPlaying,
-    currentTime: videoCurrentTime,
-    totalDuration: videoTotalDuration,
-    currentSegmentIndex: videoCurrentSegIdx,
-    canPlay: videoCanPlay,
-    togglePlayPause: videoTogglePlayPause,
-    seekTo: videoSeekTo,
-    videoRefs,
-  } = useSegmentScheduler(segments)
-
-  // 选择哪条路径的状态（WebCodecs 解码失败时强制走 video fallback）
-  const effectiveUseWebCodecs = useWebCodecs && !forceVideoFallback
-  const isPlaying = effectiveUseWebCodecs ? canvasState.isPlaying : videoIsPlaying
-  const currentTime = effectiveUseWebCodecs ? canvasState.currentTime : videoCurrentTime
-  const totalDuration = effectiveUseWebCodecs ? canvasState.duration : videoTotalDuration
-  const canPlay = effectiveUseWebCodecs ? canvasState.isReady : videoCanPlay
-  const isBuffering = effectiveUseWebCodecs ? canvasState.isBuffering : false
-
-  // ── 配音音频同步 ──
-  const audioRef = useRef<HTMLAudioElement | null>(null)
-  const prevIsPlayingRef = useRef(false)
-
-  useEffect(() => {
-    if (!voiceAudioUrl) {
-      if (audioRef.current) {
-        audioRef.current.pause()
-        audioRef.current.src = ""
-        audioRef.current = null
-      }
-      return
-    }
-    if (!audioRef.current) {
-      audioRef.current = new Audio()
-      audioRef.current.preload = "auto"
-    }
-    if (audioRef.current.src !== voiceAudioUrl) {
-      audioRef.current.src = voiceAudioUrl
-    }
-  }, [voiceAudioUrl])
-
-  useEffect(() => {
-    const audio = audioRef.current
-    if (!audio || !audio.src) return
-    if (isPlaying && !prevIsPlayingRef.current) {
-      audio.currentTime = currentTime
-      audio.play().catch(() => {})
-    } else if (!isPlaying && prevIsPlayingRef.current) {
-      audio.pause()
-    }
-    prevIsPlayingRef.current = isPlaying
-  }, [isPlaying, currentTime])
-
-  // 片段切换时同步音频（仅 fallback 路径需要）
-  const segmentSyncKey = effectiveUseWebCodecs ? -1 : videoCurrentSegIdx
-  useEffect(() => {
-    const audio = audioRef.current
-    if (!audio || !audio.src || !isPlaying) return
-    audio.currentTime = currentTime
-    // 注意：不要把 currentTime 放进依赖数组，否则每200ms会重置音频位置导致卡顿
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [segmentSyncKey, isPlaying])
-
-  const handleSeekTo = useCallback(
-    (time: number) => {
-      if (effectiveUseWebCodecs) {
-        canvasControls.seek(time)
-      } else {
-        videoSeekTo(time)
-      }
-      const audio = audioRef.current
-      if (audio && audio.src) {
-        audio.currentTime = time
-      }
-    },
-    [effectiveUseWebCodecs, canvasControls, videoSeekTo],
-  )
-
-  const handleTogglePlay = useCallback(() => {
-    if (effectiveUseWebCodecs) {
-      if (canvasState.isPlaying) {
-        canvasControls.pause()
-      } else {
-        canvasControls.play()
-      }
-    } else {
-      videoTogglePlayPause()
-    }
-  }, [effectiveUseWebCodecs, canvasState.isPlaying, canvasControls, videoTogglePlayPause])
-
-  // ── 进度条拖拽 ──
-  const [isDragging, setIsDragging] = useState(false)
-  const progressRef = useRef<HTMLDivElement>(null)
-
-  const handleProgressClick = useCallback(
-    (e: React.MouseEvent<HTMLDivElement>) => {
-      if (!progressRef.current || totalDuration <= 0) return
-      const rect = progressRef.current.getBoundingClientRect()
-      const ratio = Math.max(0, Math.min(1, (e.clientX - rect.left) / rect.width))
-      handleSeekTo(ratio * totalDuration)
-    },
-    [totalDuration, handleSeekTo],
-  )
-
-  const handleMouseDown = useCallback(
-    (e: React.MouseEvent<HTMLDivElement>) => {
-      setIsDragging(true)
-      handleProgressClick(e)
-    },
-    [handleProgressClick],
-  )
-
-  useEffect(() => {
-    if (!isDragging) return
-    const handleMouseMove = (e: MouseEvent) => {
-      if (!progressRef.current || totalDuration <= 0) return
-      const rect = progressRef.current.getBoundingClientRect()
-      const ratio = Math.max(0, Math.min(1, (e.clientX - rect.left) / rect.width))
-      handleSeekTo(ratio * totalDuration)
-    }
-    const handleMouseUp = () => setIsDragging(false)
-    window.addEventListener("mousemove", handleMouseMove)
-    window.addEventListener("mouseup", handleMouseUp)
-    return () => {
-      window.removeEventListener("mousemove", handleMouseMove)
-      window.removeEventListener("mouseup", handleMouseUp)
-    }
-  }, [isDragging, totalDuration, handleSeekTo])
-
-  const progressPercent = totalDuration > 0 ? (currentTime / totalDuration) * 100 : 0
-
-  // ── Canvas 容器 ref（保留声明，WebCodecs 兜底路径仍引用） ──
-  const canvasContainerRef = useRef<HTMLDivElement>(null)
-
-  // ── 未就绪 ──
-  if (!ready || !assets.length) {
-    return (
-      <div
-        style={{
-          position: "relative",
-          width: "100%",
-          maxWidth: 280,
-          aspectRatio: "9 / 16",
-          background: "#0a0a0a",
-          borderRadius: 24,
-          overflow: "hidden",
-          boxShadow:
-            "0 4px 6px -1px rgba(0,0,0,0.3), 0 20px 50px -12px rgba(0,0,0,0.5), inset 0 0 0 1px rgba(255,255,255,0.06)",
-          display: "flex",
-          flexDirection: "column",
-          alignItems: "center",
-          justifyContent: "center",
-        }}
-      >
-        <SoundOutlined style={{ fontSize: 40, color: "rgba(255,255,255,0.3)", marginBottom: 12 }} />
-        <p style={{ color: "rgba(255,255,255,0.6)", fontSize: 14, margin: "0 0 4px" }}>
-          准备预览素材...
-        </p>
-        <p style={{ color: "rgba(255,255,255,0.35)", fontSize: 12, margin: 0 }}>
-          加载素材后即可预览播放
-        </p>
-      </div>
-    )
-  }
-
-  // ── 无播放片段 ──
-  if (!canPlay) {
-    const showDecodeError = forceVideoFallback && canvasState.hasDecodeError
-    return (
-      <div
-        style={{
-          position: "relative",
-          width: "100%",
-          maxWidth: 280,
-          aspectRatio: "9 / 16",
-          background: "#0a0a0a",
-          borderRadius: 24,
-          overflow: "hidden",
-          boxShadow:
-            "0 4px 6px -1px rgba(0,0,0,0.3), 0 20px 50px -12px rgba(0,0,0,0.5), inset 0 0 0 1px rgba(255,255,255,0.06)",
-          display: "flex",
-          flexDirection: "column",
-          alignItems: "center",
-          justifyContent: "center",
-          padding: 24,
-        }}
-      >
-        {isBuffering ? (
-          <>
-            <LoadingOutlined style={{ fontSize: 40, color: "#fff", marginBottom: 12 }} spin />
-            <p style={{ color: "rgba(255,255,255,0.8)", fontSize: 14, margin: 0 }}>加载中...</p>
-          </>
-        ) : showDecodeError ? (
-          <>
-            <PlayCircleOutlined style={{ fontSize: 40, color: "#ef4444", marginBottom: 12 }} />
-            <p
-              style={{
-                color: "rgba(255,255,255,0.9)",
-                fontSize: 14,
-                margin: "0 0 4px",
-                fontWeight: 500,
-              }}
-            >
-              视频解码失败
-            </p>
-            <p
-              style={{
-                color: "rgba(255,255,255,0.5)",
-                fontSize: 12,
-                margin: 0,
-                textAlign: "center",
-              }}
-            >
-              {canvasState.errorMessage || "当前浏览器不支持该视频编码格式，请刷新重试"}
-            </p>
-          </>
-        ) : (
-          <>
-            <PlayCircleOutlined
-              style={{ fontSize: 40, color: "rgba(255,255,255,0.3)", marginBottom: 12 }}
-            />
-            <p style={{ color: "rgba(255,255,255,0.6)", fontSize: 14, margin: "0 0 4px" }}>
-              暂无可播放素材
-            </p>
-            <p style={{ color: "rgba(255,255,255,0.35)", fontSize: 12, margin: 0 }}>
-              请先在左侧选择素材
-            </p>
-          </>
-        )}
-      </div>
-    )
-  }
-
-  return (
-    <div
-      ref={playerContainerRef}
-      style={{
-        position: "relative",
-        width: "100%",
-        maxWidth: 280,
-        aspectRatio: "9 / 16",
-        background: "#0a0a0a",
-        borderRadius: 24,
-        overflow: "hidden",
-        boxShadow:
-          "0 4px 6px -1px rgba(0,0,0,0.3), 0 20px 50px -12px rgba(0,0,0,0.5), inset 0 0 0 1px rgba(255,255,255,0.06)",
-      }}
-    >
-      {/* ── Canvas 渲染层（WebCodecs 路径） ── */}
-      {effectiveUseWebCodecs && (
-        <div
-          ref={canvasContainerRef}
-          style={{
-            position: "absolute",
-            inset: 0,
-            zIndex: 1,
-            background: "#000",
-          }}
-        >
-          <canvas
-            ref={canvasRef}
-            style={{
-              width: "100%",
-              height: "100%",
-              objectFit: "contain",
-            }}
-          />
-        </div>
-      )}
-
-      {/* ── Video 渲染层（默认路径，浏览器原生硬件解码） ── */}
-      {!effectiveUseWebCodecs &&
-        segments.map((seg, i) => (
-          <video
-            key={seg.assetId}
-            muted
-            ref={(el) => {
-              videoRefs.current[i] = el
-            }}
-            preload="auto"
-            src={seg.videoUrl}
-            style={{
-              position: "absolute",
-              inset: 0,
-              width: "100%",
-              height: "100%",
-              objectFit: "contain",
-              background: "#000",
-              zIndex: 1,
-              opacity: i === videoCurrentSegIdx ? 1 : 0,
-              pointerEvents: i === videoCurrentSegIdx ? "auto" : "none",
-            }}
-            playsInline
-          />
-        ))}
-
-      {/* 标题CSS叠加层 — 与后端 ASS 烧录坐标系 1:1 对齐 */}
-      {titleSettings?.title && (
-        <div
-          style={{
-            position: "absolute",
-            inset: 0,
-            zIndex: 5,
-            pointerEvents: "none",
-            overflow: "hidden",
-          }}
-        >
-          <div
-            style={{
-              position: "absolute",
-              left: `${titleSidePct}%`,
-              right: `${titleSidePct}%`,
-              textAlign: "center",
-              ...(titleSettings.position === "top"
-                ? { top: `${titleTopPct}%` }
-                : titleSettings.position === "center"
-                  ? { top: "50%", transform: "translateY(-50%)" }
-                  : { bottom: `${titleBottomPct}%` }),
-            }}
-          >
-            <span
-              style={{
-                fontSize: `${titleFontSizePx}px`,
-                fontFamily: titleSettings.font || "思源黑体",
-                color: titleSettings.color || "#ffffff",
-                fontWeight: titleSettings.bold ? 700 : 400,
-                fontStyle: titleSettings.italic ? "italic" : "normal",
-                lineHeight: 1.3,
-                wordBreak: "break-word",
-                WebkitTextStroke: titleSettings.stroke
-                  ? `${titleStrokeWidth}px #000000`
-                  : undefined,
-                textShadow: titleSettings.shadow
-                  ? `${titleShadowOffset}px ${titleShadowOffset}px ${titleShadowBlur}px rgba(0,0,0,0.8)`
-                  : undefined,
-              }}
-            >
-              {titleSettings.title.split(/[/／]/).map((part, i) => (
-                <span key={i}>
-                  {i > 0 && <br />}
-                  {part}
-                </span>
-              ))}
-            </span>
-          </div>
-        </div>
-      )}
-
-      {/* 中央播放按钮 */}
-      {!isPlaying && (
-        <button
-          onClick={handleTogglePlay}
-          style={{
-            position: "absolute",
-            top: "50%",
-            left: "50%",
-            transform: "translate(-50%, -50%)",
-            background: "rgba(0,0,0,0.45)",
-            backdropFilter: "blur(12px)",
-            WebkitBackdropFilter: "blur(12px)",
-            border: "1px solid rgba(255,255,255,0.15)",
-            borderRadius: "50%",
-            width: 52,
-            height: 52,
-            cursor: "pointer",
-            display: "flex",
-            alignItems: "center",
-            justifyContent: "center",
-            color: "#fff",
-            fontSize: 26,
-            zIndex: 10,
-            transition: "transform 0.2s ease, background 0.2s ease",
-            boxShadow: "0 4px 20px rgba(0,0,0,0.4)",
-          }}
-          onMouseEnter={(e) => {
-            e.currentTarget.style.transform = "translate(-50%, -50%) scale(1.08)"
-            e.currentTarget.style.background = "rgba(0,0,0,0.6)"
-          }}
-          onMouseLeave={(e) => {
-            e.currentTarget.style.transform = "translate(-50%, -50%) scale(1)"
-            e.currentTarget.style.background = "rgba(0,0,0,0.45)"
-          }}
-        >
-          <PlayCircleOutlined />
-        </button>
-      )}
-
-      {/* 片段指示器 — 右上角胶囊 */}
-      <div
-        style={{
-          position: "absolute",
-          top: 8,
-          right: 8,
-          background: "rgba(0,0,0,0.45)",
-          backdropFilter: "blur(8px)",
-          WebkitBackdropFilter: "blur(8px)",
-          color: "rgba(255,255,255,0.9)",
-          fontSize: 10,
-          fontWeight: 500,
-          padding: "2px 8px",
-          borderRadius: 999,
-          zIndex: 10,
-          border: "1px solid rgba(255,255,255,0.1)",
-          letterSpacing: 0.3,
-        }}
-      >
-        {`${videoCurrentSegIdx + 1} / ${segments.length}`}
-      </div>
-
-      {/* 控制条 — 手机风格毛玻璃 */}
-      <div
-        style={{
-          position: "absolute",
-          bottom: 0,
-          left: 0,
-          right: 0,
-          display: "flex",
-          alignItems: "center",
-          gap: 10,
-          padding: "12px 16px 16px",
-          background: "linear-gradient(transparent, rgba(0,0,0,0.7))",
-          backdropFilter: "blur(4px)",
-          WebkitBackdropFilter: "blur(4px)",
-          zIndex: 10,
-        }}
-      >
-        <button
-          onClick={handleTogglePlay}
-          style={{
-            background: "rgba(255,255,255,0.15)",
-            border: "none",
-            color: "#fff",
-            fontSize: 16,
-            cursor: "pointer",
-            width: 32,
-            height: 32,
-            borderRadius: "50%",
-            display: "flex",
-            alignItems: "center",
-            justifyContent: "center",
-            flexShrink: 0,
-            transition: "background 0.15s",
-          }}
-          onMouseEnter={(e) => {
-            e.currentTarget.style.background = "rgba(255,255,255,0.25)"
-          }}
-          onMouseLeave={(e) => {
-            e.currentTarget.style.background = "rgba(255,255,255,0.15)"
-          }}
-        >
-          {isPlaying ? <PauseCircleOutlined /> : <PlayCircleOutlined />}
-        </button>
-
-        <span
-          style={{
-            fontSize: 11,
-            color: "rgba(255,255,255,0.85)",
-            minWidth: 72,
-            fontVariantNumeric: "tabular-nums",
-            letterSpacing: 0.2,
-          }}
-        >
-          {formatTime(currentTime)} / {formatTime(totalDuration)}
-        </span>
-
-        <div
-          ref={progressRef}
-          onMouseDown={handleMouseDown}
-          style={{
-            flex: 1,
-            height: 3,
-            background: "rgba(255,255,255,0.2)",
-            borderRadius: 2,
-            cursor: "pointer",
-            position: "relative",
-          }}
-        >
-          <div
-            style={{
-              height: "100%",
-              width: `${progressPercent}%`,
-              background: "#fff",
-              borderRadius: 2,
-              transition: isDragging ? "none" : "width 0.1s linear",
-            }}
-          />
-          <div
-            style={{
-              position: "absolute",
-              top: "50%",
-              left: `${progressPercent}%`,
-              transform: "translate(-50%, -50%)",
-              width: 10,
-              height: 10,
-              borderRadius: "50%",
-              background: "#fff",
-              boxShadow: "0 0 6px rgba(255,255,255,0.5)",
-              opacity: isDragging ? 1 : 0,
-              transition: "opacity 0.15s",
-            }}
-          />
-        </div>
-      </div>
-    </div>
-  )
-}
-
-export default FrontendPreviewPlayer
@@ -1,9 +1,7 @@
 /**
 * GeneratePage 步骤内容渲染
 * 根据当前步骤渲染对应的 Step 组件
- * 步骤顺序：模板(1) → 素材(2) → 配音(3) → 标题(4) → 预览(5) → 封面(6) → 确认(7)
- *
- * V24: 移除 Step5 预览生成相关 props，改为纯标题样式编辑
+ * 步骤顺序：模板(1) → 素材(2) → 配音(3) → 预览(4) → 标题(5) → 封面(6) → 确认(7)
 */
 import React from "react"
 import type { EditingTemplate } from "@/api/editing-planner"
@@ -11,11 +9,12 @@ import type { PresetVoiceItem } from "@/api/voices"
 import type { VoiceClone } from "@/api/voice-clone"
 import type { CoverConfig } from "../types/cover"
 import type { TitleSettings } from "../types"
+import type { PreviewItem, PreviewStatus } from "../hooks/useStep4Preview"
 import Step1TemplateSelect from "../components/Step1TemplateSelect"
 import Step2MaterialSelect from "../components/Step2MaterialSelect"
 import Step3VoiceSelect from "../components/Step5VoiceSelect"
-import Step5GeneratePreview from "../components/Step5GeneratePreview"
-import Step4TitleSettings from "../components/Step4TitleSettings"
+import Step4GeneratePreview from "../components/Step4GeneratePreview"
+import Step5TitleSettings from "../components/Step4TitleSettings"
 import Step6CoverSettings from "../components/Step6CoverSettings"
 import Step7ConfirmGenerate from "../components/Step7ConfirmGenerate"
 import type { GeneratedVideo } from "@/api/template-editor"
@@ -36,17 +35,6 @@ export interface GenerateStepContentProps {
  /* 标题 */
  titleSettings: TitleSettings
  onTitleSettingsChange: (settings: TitleSettings) => void
-  /* 标题样式回调 — Step5 样式面板使用 */
-  onUpdatePosition: (position: string) => void
-  onUpdateFont: (font: string) => void
-  onUpdateSize: (size: number) => void
-  onToggleBold: () => void
-  onToggleItalic: () => void
-  onToggleStroke: () => void
-  onToggleShadow: () => void
-  onApplyPreset: (presetKey: string) => void
-  activePreset: string | null
-  titlePresets: { key: string; label: string; previewStyle: React.CSSProperties }[]
  /* 封面 */
  coverSettings: CoverConfig
  onCoverSettingsChange: (settings: CoverConfig) => void
@@ -54,7 +42,6 @@ export interface GenerateStepContentProps {
  /* 配音 */
  selectedVoice: string
  onSelectedVoiceChange: (id: string) => void
-  totalVideoDuration?: number
  voiceMode: "preset" | "custom" | "clone"
  onVoiceModeChange: (mode: "preset" | "custom" | "clone") => void
  selectedClonedVoice: string
@@ -76,14 +63,21 @@ export interface GenerateStepContentProps {
  onDismissError: () => void
  /* 其他 */
  presetVoices: PresetVoiceItem[]
-  /** 预览任务创建回调——传递给 Step6CoverSettings */
-  onPreviewTaskCreated?: (taskId: string) => void
-  /** 从预览响应中提取到 source_edit_plan_id 时的回调 */
-  onSourceEditPlanIdExtracted?: (planId: string) => void
-  /** BGM 开关 */
-  bgm: boolean
-  /** BGM 配置（来自模板） */
-  bgmConfig?: { enabled: boolean; music_id?: string }
+  videoRatio: string
+  /* Step4 预览（多预览） */
+  previewCount: number
+  onPreviewCountChange: (count: number) => void
+  previewItems: PreviewItem[]
+  previewSelectedIndex: number
+  onSelectPreview: (index: number) => void
+  previewOverallStatus: PreviewStatus
+  previewOverallError: string
+  previewOverallProgress: number
+  previewAnyGenerating: boolean
+  previewTemplateName: string
+  previewMaterialCount: string
+  onGeneratePreview: () => void
+  onRegeneratePreview: () => void
 }

 export const GenerateStepContent: React.FC<GenerateStepContentProps> = (props) => {
@@ -100,22 +94,11 @@ export const GenerateStepContent: React.FC<GenerateStepContentProps> = (props) =
    onSmartSelectedIdsChange,
    titleSettings,
    onTitleSettingsChange,
-    onUpdatePosition,
-    onUpdateFont,
-    onUpdateSize,
-    onToggleBold,
-    onToggleItalic,
-    onToggleStroke,
-    onToggleShadow,
-    onApplyPreset,
-    activePreset,
-    titlePresets,
    coverSettings,
    onCoverSettingsChange,
    duration,
    selectedVoice,
    onSelectedVoiceChange,
-    totalVideoDuration,
    voiceMode,
    selectedClonedVoice,
    clonedVoices,
@@ -129,16 +112,22 @@ export const GenerateStepContent: React.FC<GenerateStepContentProps> = (props) =
    onRetry,
    onDismissError,
    presetVoices,
-    onPreviewTaskCreated,
-    onSourceEditPlanIdExtracted,
-    bgm,
-    bgmConfig,
+    videoRatio,
+    previewCount,
+    onPreviewCountChange,
+    previewItems,
+    previewSelectedIndex,
+    onSelectPreview,
+    previewOverallStatus,
+    previewOverallError,
+    previewOverallProgress,
+    previewAnyGenerating,
+    previewTemplateName,
+    previewMaterialCount,
+    onGeneratePreview,
+    onRegeneratePreview,
  } = props

-  /* 当前模板的 segments，传给 Step2 构建 clips */
-  const currentTemplate = userTemplates.find((t) => t.id === selectedTemplate)
-  const templateSegments = currentTemplate?.segments
-
  switch (currentStep) {
    case 1:
      return (
@@ -157,8 +146,6 @@ export const GenerateStepContent: React.FC<GenerateStepContentProps> = (props) =
          onSelectedMaterialsChange={onSelectedMaterialsChange}
          smartSelectedIds={smartSelectedIds}
          onSmartSelectedIdsChange={onSmartSelectedIdsChange}
-          selectedTemplate={selectedTemplate}
-          templateSegments={templateSegments}
        />
      )
    case 3:
@@ -166,31 +153,33 @@ export const GenerateStepContent: React.FC<GenerateStepContentProps> = (props) =
        <Step3VoiceSelect
          selectedVoice={selectedVoice}
          onSelectedVoiceChange={onSelectedVoiceChange}
-          totalVideoDuration={totalVideoDuration}
        />
      )
    case 4:
      return (
-        <Step4TitleSettings
-          titleSettings={titleSettings}
-          onTitleSettingsChange={onTitleSettingsChange}
-          selectedTemplate={selectedTemplate}
+        <Step4GeneratePreview
+          templateName={previewTemplateName}
+          materialCount={previewMaterialCount}
+          duration={duration}
+          videoRatio={videoRatio}
+          previewCount={previewCount}
+          onPreviewCountChange={onPreviewCountChange}
+          items={previewItems}
+          selectedIndex={previewSelectedIndex}
+          onSelectPreview={onSelectPreview}
+          overallStatus={previewOverallStatus}
+          overallError={previewOverallError}
+          overallProgress={previewOverallProgress}
+          anyGenerating={previewAnyGenerating}
+          onGeneratePreview={onGeneratePreview}
+          onRegeneratePreview={onRegeneratePreview}
        />
      )
    case 5:
      return (
-        <Step5GeneratePreview
+        <Step5TitleSettings
          titleSettings={titleSettings}
-          onUpdatePosition={onUpdatePosition}
-          onUpdateFont={onUpdateFont}
-          onUpdateSize={onUpdateSize}
-          onToggleBold={onToggleBold}
-          onToggleItalic={onToggleItalic}
-          onToggleStroke={onToggleStroke}
-          onToggleShadow={onToggleShadow}
-          onApplyPreset={onApplyPreset}
-          activePreset={activePreset}
-          titlePresets={titlePresets}
+          onTitleSettingsChange={onTitleSettingsChange}
        />
      )
    case 6:
@@ -201,14 +190,6 @@ export const GenerateStepContent: React.FC<GenerateStepContentProps> = (props) =
          duration={duration}
          assetIds={materialMode === "auto" ? smartSelectedIds : selectedMaterials}
          selectedTemplate={selectedTemplate}
-          titleSettings={titleSettings}
-          onPreviewTaskCreated={onPreviewTaskCreated}
-          onSourceEditPlanIdExtracted={onSourceEditPlanIdExtracted}
-          voiceMode={voiceMode}
-          selectedVoice={selectedVoice}
-          selectedClonedVoice={selectedClonedVoice}
-          bgm={bgm}
-          bgmConfig={bgmConfig}
        />
      )
    case 7:
@@ -1,371 +1,387 @@
 /**
- * 右侧预览视频面板 — 服务器渲染预览架构
+ * 右侧预览视频面板
+ * Step4 生成预览后常驻显示预览视频
+ * Step5+ 用 Canvas 绘制标题预览（替代 CSS overlay，与 ASS 渲染行为一致）
 *
- * Step4+: 显示预览面板
- * Step5: 播放服务器渲染的真实视频（POST /generation/preview）
+ * 设计说明：标题预览仅在有视频时显示（叠加在视频画面上方）。
+ * 无视频状态（idle/loading/error）下不再单独显示标题预览，这是有意为之的设计简化。
 *
- * 架构：
- * - 进入 Step4/5 时自动创建服务器预览渲染任务
- * - 轮询完成后用 <video> 标签播放返回的 video_url
- * - 标题样式编辑时 CSS TitleOverlay 实时叠加预览
- * - 素材/配音/BGM 变更自动重新渲染
- * - 标题文字/样式变更标记 stale，保留旧视频 + 显示"重新预览"按钮
- *
- * 点"确认生成"时走 confirm 路径，成品就是预览视频本身，100% 一致。
+ * Canvas 居中修复说明：
+ * Canvas 的 CSS 位置和尺寸直接匹配视频实际渲染区域（通过 getBoundingClientRect），
+ * 绘制坐标系基于 Canvas 自身尺寸，x = w/2 即可实现水平居中，
+ * 避免容器与视频尺寸不一致时浏览器拉伸 Canvas 导致居中偏移。
 */
-import React, { useMemo, useRef, useState, useEffect } from "react"
-import { LoadingOutlined, ReloadOutlined, ExclamationCircleOutlined } from "@ant-design/icons"
-import { Button } from "antd"
+import React, { useRef, useEffect, useCallback } from "react"
+import { PlayCircleOutlined, LoadingOutlined } from "@ant-design/icons"
+import type { PreviewResult, PreviewStatus } from "../hooks/useStep4Preview"
 import type { TitleSettings } from "../types"
-import { getFontFamily } from "../constants"
-import type { ServerPreviewStatus } from "../hooks/useServerPreview"

 interface PreviewVideoPanelProps {
-  /** 服务器预览状态 */
-  previewStatus: ServerPreviewStatus
-  /** 服务器渲染视频 URL */
-  videoUrl: string | null
-  /** 渲染进度 0-100 */
+  previewStatus: PreviewStatus
+  previewResult: PreviewResult | null
+  previewError: string
  progress: number
-  /** 错误信息 */
-  error: string | null
-  /** 重新预览回调 */
-  onRetry: () => void
-  /** 视频比例 */
  videoRatio: string
-  /** 标题设置 — CSS 实时预览层 */
+  onRegenerate: () => void
+  /** 标题文字（Step5 起传入） */
+  titleText?: string
+  /** 标题样式设置（Step5 起传入） */
  titleSettings?: TitleSettings
-  /** 素材数量 */
-  assetCount?: number
 }

-/* ── ASS 坐标系参数（与后端 ass_subtitle_builder.py 一致） ── */
-const TITLE_MARGIN_TOP = 60
-const TITLE_MARGIN_BOTTOM = 60
-const TITLE_MARGIN_SIDE = 40
+/* ── Canvas 绘制工具函数 ── */

-/** 根据视频比例返回后端实际渲染分辨率（PlayResX × PlayResY） */
-function getResolution(ratio: string): { width: number; height: number } {
-  switch (ratio) {
-    case "16:9":
-      return { width: 1920, height: 1080 }
-    case "1:1":
-      return { width: 1080, height: 1080 }
-    case "9:16":
-    default:
-      return { width: 1080, height: 1920 }
+/**
+ * 将文本按 maxWidth 逐字换行，返回行数组。
+ * 与 ASS 字幕引擎的逐字换行行为一致。
+ */
+function wrapText(ctx: CanvasRenderingContext2D, text: string, maxWidth: number): string[] {
+  const lines: string[] = []
+  let currentLine = ""
+  for (const char of text) {
+    const testLine = currentLine + char
+    if (ctx.measureText(testLine).width > maxWidth && currentLine) {
+      lines.push(currentLine)
+      currentLine = char
+    } else {
+      currentLine = testLine
+    }
  }
+  if (currentLine) lines.push(currentLine)
+  return lines
 }

-function getPositionStyle(
-  position: string,
-  playResX: number,
-  playResY: number,
-): React.CSSProperties {
-  const sidePercent = (TITLE_MARGIN_SIDE / playResX) * 100
-  switch (position) {
-    case "bottom":
-      return {
-        bottom: `${(TITLE_MARGIN_BOTTOM / playResY) * 100}%`,
-        left: `${sidePercent}%`,
-        right: `${sidePercent}%`,
-        textAlign: "center",
-      }
-    case "center":
-      return {
-        top: "50%",
-        transform: "translateY(-50%)",
-        left: `${sidePercent}%`,
-        right: `${sidePercent}%`,
-        textAlign: "center",
-      }
-    case "top":
-    default:
-      return {
-        top: `${(TITLE_MARGIN_TOP / playResY) * 100}%`,
-        left: `${sidePercent}%`,
-        right: `${sidePercent}%`,
-        textAlign: "center",
-      }
-  }
-}
-
-function buildTitleStyle(
+/**
+ * 在 canvas 上绘制标题文字（含描边/阴影/多行居中）
+ *
+ * Canvas 已通过 CSS 定位到视频实际渲染位置，
+ * 坐标系基于 Canvas 自身尺寸，居中直接使用 w/2。
+ *
+ * @param ctx canvas 上下文
+ * @param w canvas CSS 宽度（= 视频渲染宽度）
+ * @param h canvas CSS 高度（= 视频渲染高度）
+ * @param text 标题文字
+ * @param settings 标题样式
+ * @param paddingX 左右边距（px），与 ASS 的 MarginL/MarginR 对应
+ * @param position "top" | "center" | "bottom"
+ * @param topOffset 顶部/底部偏移量
+ */
+function drawTitleOnCanvas(
+  ctx: CanvasRenderingContext2D,
+  w: number,
+  h: number,
+  text: string,
  settings: TitleSettings,
-  containerHeight: number,
-  playResY: number,
-): React.CSSProperties {
-  // 字号按容器高度与 PlayResY 的比例缩放，不设上限（与后端一致）
-  const fontSizePx =
-    containerHeight > 0
-      ? (settings.size / playResY) * containerHeight
-      : (settings.size / playResY) * 400
+  paddingX: number,
+  position: string,
+  topOffset: number,
+) {
+  const dpr = window.devicePixelRatio || 1

-  const base: React.CSSProperties = {
-    fontFamily: getFontFamily(settings.font),
-    fontSize: `${fontSizePx}px`,
-    color: settings.color || "#ffffff",
-    fontWeight: settings.bold ? 700 : 400,
-    fontStyle: settings.italic ? "italic" : "normal",
-    lineHeight: 1.3,
-    wordBreak: "break-word",
-    pointerEvents: "none",
-    userSelect: "none",
+  // 设置 canvas 物理像素尺寸（高清屏适配）
+  ctx.canvas.width = Math.round(w * dpr)
+  ctx.canvas.height = Math.round(h * dpr)
+  ctx.scale(dpr, dpr)
+
+  // 清除
+  ctx.clearRect(0, 0, w, h)
+
+  // 可用宽度 = 总宽 - 左右边距
+  const availableWidth = w - paddingX * 2
+  if (availableWidth <= 0) return
+
+  // 字体设置
+  const fontSize = Math.round(Math.min(settings.size, 36))
+  const fontWeight = settings.bold ? "bold" : "normal"
+  const fontStyle = settings.italic ? "italic" : "normal"
+  ctx.font = `${fontStyle} ${fontWeight} ${fontSize}px "${settings.font}"`
+
+  // 文字属性
+  ctx.textAlign = "center"
+  ctx.textBaseline = "middle"
+  ctx.fillStyle = settings.color
+
+  const lineHeight = fontSize * 1.4
+
+  // 描边 & 阴影
+  if (settings.stroke) {
+    ctx.strokeStyle = "rgba(0,0,0,0.6)"
+    ctx.lineWidth = 2
+    ctx.lineJoin = "round"
+  }
+  if (settings.shadow) {
+    ctx.shadowColor = "rgba(0,0,0,0.7)"
+    ctx.shadowBlur = 4
+    ctx.shadowOffsetX = 2
+    ctx.shadowOffsetY = 2
+  }
+
+  // 换行
+  const displayText = text && text.trim() ? text : "请选择或输入标题"
+  const lines = wrapText(ctx, displayText, availableWidth)
+
+  // 起始 Y：根据 position 计算
+  const totalTextHeight = lines.length * lineHeight
+  let startY: number
+  switch (position) {
+    case "top":
+      startY = topOffset
+      break
+    case "center":
+      startY = (h - totalTextHeight) / 2 + lineHeight / 2
+      break
+    case "bottom":
+    default:
+      startY = h - topOffset - totalTextHeight + lineHeight / 2
+      break
+  }
+
+  // 居中 x = w/2（Canvas 已定位到视频位置，无需额外偏移）
+  const x = w / 2
+  lines.forEach((line, i) => {
+    const y = startY + i * lineHeight
+    if (settings.stroke) ctx.strokeText(line, x, y)
+    ctx.fillText(line, x, y)
+  })
+
+  // 重置 shadow（避免影响后续绘制）
+  if (settings.shadow) {
+    ctx.shadowColor = "transparent"
+    ctx.shadowBlur = 0
+    ctx.shadowOffsetX = 0
+    ctx.shadowOffsetY = 0
  }
-  if (settings.stroke) base.WebkitTextStroke = "1px #000000"
-  if (settings.shadow) base.textShadow = "2px 2px 4px rgba(0,0,0,0.8)"
-  return base
 }

-/** CSS 标题实时预览覆盖层 */
-const TitleOverlay: React.FC<{ titleSettings: TitleSettings; videoRatio: string }> = ({
-  titleSettings,
-  videoRatio,
-}) => {
-  const containerRef = useRef<HTMLDivElement>(null)
-  const [containerHeight, setContainerHeight] = useState(400)
-
-  useEffect(() => {
-    const el = containerRef.current
-    if (!el) return
-    const ro = new ResizeObserver((entries) => {
-      for (const entry of entries) {
-        const h = entry.contentRect.height
-        if (h > 0) setContainerHeight(h)
-      }
-    })
-    ro.observe(el)
-    const rect = el.getBoundingClientRect()
-    if (rect.height > 0) setContainerHeight(rect.height)
-    return () => ro.disconnect()
-  }, [])
-
-  const { width: playResX, height: playResY } = getResolution(videoRatio)
-
-  const positionStyle = useMemo(
-    () => getPositionStyle(titleSettings.position, playResX, playResY),
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-    [titleSettings.position, playResX, playResY],
-  )
-  const titleStyle = useMemo(
-    () => buildTitleStyle(titleSettings, containerHeight, playResY),
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-    [
-      containerHeight,
-      titleSettings.font,
-      titleSettings.size,
-      titleSettings.color,
-      titleSettings.bold,
-      titleSettings.italic,
-      titleSettings.stroke,
-      titleSettings.shadow,
-      playResY,
-    ],
-  )
-
-  const displayTitle = titleSettings.title?.trim() || "标题预览"
-
-  return (
-    <div
-      ref={containerRef}
-      style={{
-        position: "absolute",
-        inset: 0,
-        zIndex: 20,
-        pointerEvents: "none",
-        overflow: "hidden",
-      }}
-    >
-      <div style={{ ...positionStyle, ...titleStyle, position: "absolute" }}>
-        {displayTitle.split(/[/／]/).map((part, i) => (
-          <span key={i}>
-            {i > 0 && <br />}
-            {part}
-          </span>
-        ))}
-      </div>
-    </div>
-  )
-}
-
-/* ── 主组件 ── */
+/* ── 组件 ── */

 export const PreviewVideoPanel: React.FC<PreviewVideoPanelProps> = ({
  previewStatus,
-  videoUrl,
+  previewResult,
+  previewError,
  progress,
-  error,
-  onRetry,
  videoRatio,
+  onRegenerate,
+  titleText,
  titleSettings,
-  assetCount,
 }) => {
-  const videoAspectStyle = { aspectRatio: (videoRatio || "9:16").replace(":", "/") }
-  const isLoading = previewStatus === "loading"
-  const isReady = previewStatus === "ready" || previewStatus === "stale"
-  const isFailed = previewStatus === "failed"
-  const isIdle = previewStatus === "idle"
-  const isStale = previewStatus === "stale"
+  const hasPreview = previewStatus === "ready" && previewResult
+  const isLoading = previewStatus === "pending" || previewStatus === "generating"
+  const isError = previewStatus === "error"
+  const showTitlePreview = !!titleSettings
+  const videoAspectStyle = { aspectRatio: (videoRatio || "16:9").replace(":", "/") }
+
+  // video 模式 refs
+  const canvasRef = useRef<HTMLCanvasElement>(null)
+  const containerRef = useRef<HTMLDivElement>(null)
+  const videoRef = useRef<HTMLVideoElement>(null)
+
+  // 字体加载状态（ref 供 draw 回调同步读取，无需 state 避免触发不必要的重渲染）
+  const fontLoadedRef = useRef(false)
+
+  /** 在 video canvas 上绘制标题 */
+  const drawVideoTitle = useCallback(() => {
+    // 通过 ref 读取字体状态，避免 fontLoaded 进入依赖数组
+    if (!fontLoadedRef.current) return
+    const canvas = canvasRef.current
+    const container = containerRef.current
+    if (!canvas || !container || !titleSettings) return
+    const ctx = canvas.getContext("2d")
+    if (!ctx) return
+
+    const containerRect = container.getBoundingClientRect()
+    if (containerRect.width <= 0 || containerRect.height <= 0) return
+
+    // 使用 video 元素的 getBoundingClientRect 获取实际渲染尺寸和位置
+    const videoEl = videoRef.current
+    let drawW = containerRect.width
+    let drawH = containerRect.height
+    let offsetX = 0
+    let offsetY = 0
+
+    if (videoEl && videoEl.clientWidth > 0 && videoEl.clientHeight > 0) {
+      const videoRect = videoEl.getBoundingClientRect()
+      drawW = videoRect.width
+      drawH = videoRect.height
+      offsetX = videoRect.left - containerRect.left
+      offsetY = videoRect.top - containerRect.top
+    }
+
+    // 更新 Canvas CSS 位置和尺寸，使其与视频实际渲染区域完全对齐
+    canvas.style.left = `${offsetX}px`
+    canvas.style.top = `${offsetY}px`
+    canvas.style.width = `${drawW}px`
+    canvas.style.height = `${drawH}px`
+
+    // 绘制时，坐标系基于 Canvas 自身尺寸，无需额外偏移
+    drawTitleOnCanvas(
+      ctx,
+      drawW,
+      drawH,
+      titleText || "",
+      titleSettings,
+      40,
+      titleSettings.position,
+      60,
+    )
+  }, [titleText, titleSettings])
+
+  // video 模式：ResizeObserver 监听容器尺寸变化 → 重绘
+  useEffect(() => {
+    if (!showTitlePreview || !hasPreview) return
+    const container = containerRef.current
+    if (!container) return
+
+    const observer = new ResizeObserver(() => {
+      drawVideoTitle()
+    })
+    observer.observe(container)
+    requestAnimationFrame(drawVideoTitle)
+
+    return () => observer.disconnect()
+  }, [showTitlePreview, hasPreview, drawVideoTitle])
+
+  // 字体加载检测：字体变更时重新检测，确保 measureText 使用正确字体
+  useEffect(() => {
+    if (!showTitlePreview || !titleSettings) {
+      fontLoadedRef.current = false
+      return
+    }
+    let cancelled = false
+    fontLoadedRef.current = false
+
+    const fontWeight = titleSettings.bold ? "bold" : ""
+    const fontStyle = titleSettings.italic ? "italic" : ""
+    const fontSpec =
+      `${fontStyle} ${fontWeight} ${titleSettings.size}px "${titleSettings.font}"`.trim()
+
+    const onFontReady = () => {
+      if (cancelled) return
+      fontLoadedRef.current = true
+      // ref 已同步更新，显式触发重绘（draw 内部通过 ref 检查字体状态）
+      requestAnimationFrame(() => {
+        if (!cancelled) {
+          drawVideoTitle()
+        }
+      })
+    }
+
+    if (document.fonts.check(fontSpec)) {
+      onFontReady()
+      return
+    }
+
+    document.fonts
+      .load(fontSpec)
+      .then(() => onFontReady())
+      .catch(() => {
+        document.fonts.ready.then(() => onFontReady())
+      })
+
+    return () => {
+      cancelled = true
+    }
+  }, [showTitlePreview, titleSettings, drawVideoTitle])
+
+  // video 加载完成后重绘
+  const handleVideoLoaded = useCallback(() => {
+    if (showTitlePreview) {
+      requestAnimationFrame(drawVideoTitle)
+    }
+  }, [showTitlePreview, drawVideoTitle])

  return (
    <div className="xx-generate-preview">
      <div className="xx-preview-header">
        <h3>预览视频</h3>
-        {isReady && !isStale && <span className="xx-preview-badge">服务器渲染</span>}
-        {isStale && (
-          <span
-            style={{
-              fontSize: 12,
-              color: "#faad14",
-              display: "flex",
-              alignItems: "center",
-              gap: 4,
-            }}
-          >
-            <ExclamationCircleOutlined /> 配置已变更
-          </span>
-        )}
-        {isLoading && <span className="xx-preview-badge">渲染中</span>}
+        {hasPreview && <span className="xx-preview-badge">480p 预览版</span>}
      </div>

-      <div className="xx-preview-video" style={{ ...videoAspectStyle, position: "relative" }}>
-        {/* 加载中 */}
-        {isLoading && (
-          <div
-            style={{
-              position: "absolute",
-              inset: 0,
-              display: "flex",
-              flexDirection: "column",
-              alignItems: "center",
-              justifyContent: "center",
-              zIndex: 5,
-              background: "rgba(0,0,0,0.6)",
-            }}
-          >
-            <LoadingOutlined style={{ fontSize: 36, color: "#fff" }} spin />
-            <p style={{ marginTop: 12, color: "rgba(255,255,255,0.9)", fontSize: 14 }}>
-              正在渲染预览视频{progress > 0 ? `...${progress}%` : "..."}
-            </p>
-            <p style={{ marginTop: 4, color: "rgba(255,255,255,0.5)", fontSize: 12 }}>
-              首次渲染约需 30-60 秒
-            </p>
-          </div>
-        )}
-
-        {/* 空闲状态（尚未触发预览） */}
-        {isIdle && (
-          <div
-            style={{
-              position: "absolute",
-              inset: 0,
-              display: "flex",
-              flexDirection: "column",
-              alignItems: "center",
-              justifyContent: "center",
-              background: "rgba(0,0,0,0.3)",
-              zIndex: 5,
-            }}
-          >
-            <p style={{ color: "rgba(255,255,255,0.7)", fontSize: 14 }}>等待素材选择...</p>
-          </div>
-        )}
-
-        {/* 服务器渲染的真实视频 */}
-        {isReady && videoUrl && (
-          <video
-            key={videoUrl}
-            src={videoUrl}
-            controls
-            autoPlay
-            loop
-            playsInline
-            style={{
-              width: "100%",
-              height: "100%",
-              objectFit: "contain",
-              position: "absolute",
-              inset: 0,
-              zIndex: 1,
-            }}
+      {/* 空状态：还没生成预览 */}
+      {previewStatus === "idle" && (
+        <div className="xx-preview-empty">
+          <PlayCircleOutlined
+            style={{ fontSize: 48, color: "var(--text-tertiary)", marginBottom: 12 }}
          />
-        )}
+          <p className="xx-preview-empty-title">暂无预览</p>
+          <p className="xx-preview-empty-desc">在第 3 步生成预览后在此查看</p>
+        </div>
+      )}

-        {/* 标题样式实时预览层（仅在有视频时叠加） */}
-        {isReady && titleSettings && (
-          <TitleOverlay titleSettings={titleSettings} videoRatio={videoRatio} />
-        )}
-
-        {/* stale 遮罩：配置变更提示 */}
-        {isStale && (
-          <div
-            style={{
-              position: "absolute",
-              bottom: 0,
-              left: 0,
-              right: 0,
-              padding: "10px 16px",
-              background: "linear-gradient(transparent, rgba(0,0,0,0.85))",
-              display: "flex",
-              alignItems: "center",
-              justifyContent: "space-between",
-              gap: 8,
-              zIndex: 30,
-            }}
-          >
-            <span style={{ color: "rgba(255,255,255,0.9)", fontSize: 12 }}>
-              配置已变更，预览内容可能不是最新
-            </span>
-            <Button size="small" type="primary" icon={<ReloadOutlined />} onClick={onRetry}>
-              重新预览
-            </Button>
+      {/* 生成中 */}
+      {isLoading && (
+        <div className="xx-preview-loading-panel">
+          <div className="xx-preview-video" style={videoAspectStyle}>
+            <div className="xx-preview-loading-center">
+              <LoadingOutlined style={{ fontSize: 36, color: "#fff" }} spin />
+              <p style={{ marginTop: 12, color: "rgba(255,255,255,0.8)", fontSize: 14 }}>
+                {previewStatus === "pending" ? "排队中..." : `生成中 ${progress}%`}
+              </p>
+            </div>
          </div>
-        )}
+          <div className="xx-preview-progress-bar-wrap">
+            <div className="xx-preview-progress-fill" style={{ width: `${progress}%` }} />
+          </div>
+        </div>
+      )}

-        {/* 错误状态 */}
-        {isFailed && (
-          <div
-            style={{
-              position: "absolute",
-              inset: 0,
-              display: "flex",
-              flexDirection: "column",
-              alignItems: "center",
-              justifyContent: "center",
-              background: "rgba(0,0,0,0.7)",
-              zIndex: 10,
-              padding: 24,
-            }}
-          >
-            <ExclamationCircleOutlined style={{ fontSize: 40, color: "#ff4d4f" }} />
-            <p
+      {/* 生成失败 */}
+      {isError && (
+        <div className="xx-preview-error-panel">
+          <div className="xx-preview-video xx-preview-video--error" style={videoAspectStyle}>
+            <p style={{ color: "rgba(255,255,255,0.8)", fontSize: 14 }}>预览生成失败</p>
+          </div>
+          <p className="xx-preview-error-msg">
+            {typeof previewError === "string" && previewError ? previewError : "请重试"}
+          </p>
+          <button className="xx-btn xx-btn-ghost xx-btn-block" onClick={onRegenerate}>
+            重新生成
+          </button>
+        </div>
+      )}
+
+      {/* 预览成功 + Canvas 标题叠加 */}
+      {hasPreview && (
+        <div ref={containerRef} style={{ position: "relative" }}>
+          <div className="xx-preview-video" style={videoAspectStyle}>
+            <video
+              ref={videoRef}
+              src={previewResult.videoUrl}
+              controls
+              preload="metadata"
+              onLoadedMetadata={handleVideoLoaded}
+            />
+          </div>
+          {showTitlePreview && (
+            <canvas
+              ref={canvasRef}
              style={{
-                marginTop: 12,
-                color: "rgba(255,255,255,0.9)",
-                fontSize: 14,
-                textAlign: "center",
+                position: "absolute",
+                top: 0,
+                left: 0,
+                width: "100%",
+                height: "100%",
+                zIndex: 1,
+                pointerEvents: "none",
              }}
-            >
-              {error || "预览渲染失败"}
-            </p>
-            <Button
-              type="primary"
-              icon={<ReloadOutlined />}
-              onClick={onRetry}
-              style={{ marginTop: 12 }}
-            >
-              重新预览
-            </Button>
-          </div>
-        )}
-      </div>
+            />
+          )}
+        </div>
+      )}

-      {/* 素材信息 */}
-      {assetCount !== undefined && assetCount > 0 && (
+      {/* 预览信息 */}
+      {hasPreview && previewResult && (
        <div className="xx-preview-info">
          <div className="xx-preview-info-row">
-            <span>素材数</span>
-            <span>{assetCount} 个</span>
+            <span>时长</span>
+            <span>
+              {(typeof previewResult.duration === "number" ? previewResult.duration : 0).toFixed(1)}{" "}
+              秒
+            </span>
+          </div>
+          <div className="xx-preview-info-row">
+            <span>片段数</span>
+            <span>{previewResult.clipCount} 段</span>
          </div>
          <div className="xx-preview-info-row">
            <span>比例</span>
@@ -2,7 +2,6 @@
 * Step 2 素材选择组件
 */
 import React from "react"
-import type { TemplateSegment } from "@/api/templates/types"
 import { useStep2Materials } from "../hooks/useStep2Materials"
 import MaterialModeTabs from "./material/MaterialModeTabs"
 import ManualMaterialList from "./material/ManualMaterialList"
@@ -16,10 +15,6 @@ interface Step2MaterialSelectProps {
  onSelectedMaterialsChange: (ids: string[]) => void
  smartSelectedIds: string[]
  onSmartSelectedIdsChange: (ids: string[]) => void
-  /** 当前选中的模板/草稿 ID，用于自动保存 */
-  selectedTemplate?: string
-  /** 当前模板的 segments（用于构建 clips duration） */
-  templateSegments?: TemplateSegment[]
 }

 const Step2MaterialSelect: React.FC<Step2MaterialSelectProps> = (props) => {
@@ -0,0 +1,294 @@
+/**
+ * Step 4 生成预览组件（支持多预览）
+ * 调用后端预览生成接口，展示多个真实视频预览（网格布局）
+ */
+import React from "react"
+import {
+  CheckCircleFilled,
+  LoadingOutlined,
+  ReloadOutlined,
+  PlayCircleOutlined,
+  ExclamationCircleFilled,
+  ClockCircleOutlined,
+} from "@ant-design/icons"
+import { InputNumber } from "antd"
+import type { PreviewItem, PreviewStatus } from "../hooks/useStep4Preview"
+
+interface Step4GeneratePreviewProps {
+  templateName: string
+  materialCount: string
+  duration: number
+  videoRatio: string
+  previewCount: number
+  onPreviewCountChange: (count: number) => void
+  items: PreviewItem[]
+  selectedIndex: number
+  onSelectPreview: (index: number) => void
+  overallStatus: PreviewStatus
+  overallError: string
+  overallProgress: number
+  anyGenerating: boolean
+  onGeneratePreview: () => void
+  onRegeneratePreview: () => void
+}
+
+/** 预览数量选项 */
+const PREVIEW_COUNT_OPTIONS = [
+  { value: 1, label: "1个" },
+  { value: 2, label: "2个" },
+  { value: 3, label: "3个" },
+]
+
+const Step4GeneratePreview: React.FC<Step4GeneratePreviewProps> = ({
+  templateName: _templateName,
+  materialCount: _materialCount,
+  videoRatio,
+  previewCount,
+  onPreviewCountChange,
+  items,
+  selectedIndex,
+  onSelectPreview,
+  overallStatus,
+  overallError,
+  overallProgress,
+  anyGenerating,
+  onGeneratePreview,
+  onRegeneratePreview,
+}) => {
+  const aspectRatio = (videoRatio || "16:9").replace(":", "/") // "9:16" → "9/16", "16:9" → "16/9"
+  const isIdle = overallStatus === "idle"
+  const isError = overallStatus === "error" && !items.some((it) => it.status === "ready")
+
+  return (
+    <div className="xx-form-section">
+      <h3>🎬 生成预览</h3>
+
+      {/* 预览数量选择器（仅在 idle 状态显示） */}
+      {isIdle && (
+        <div style={{ marginBottom: 16, display: "flex", alignItems: "center", gap: 12 }}>
+          <span style={{ fontSize: 14, color: "#666" }}>预览数量：</span>
+          <div style={{ display: "flex", gap: 8, alignItems: "center" }}>
+            {PREVIEW_COUNT_OPTIONS.map((opt) => (
+              <button
+                key={opt.value}
+                type="button"
+                onClick={() => onPreviewCountChange(opt.value)}
+                style={{
+                  padding: "4px 12px",
+                  borderRadius: 6,
+                  border: previewCount === opt.value ? "1px solid #1677ff" : "1px solid #d9d9d9",
+                  background: previewCount === opt.value ? "#e6f4ff" : "#fff",
+                  color: previewCount === opt.value ? "#1677ff" : "#666",
+                  cursor: "pointer",
+                  fontSize: 13,
+                  fontWeight: previewCount === opt.value ? 600 : 400,
+                }}
+              >
+                {opt.label}
+              </button>
+            ))}
+            <InputNumber
+              min={1}
+              max={10}
+              value={previewCount}
+              onChange={(val) => val && onPreviewCountChange(val)}
+              style={{ width: 70 }}
+              placeholder="自定义"
+            />
+            <span style={{ fontSize: 12, color: "#999", marginLeft: 4 }}>（1~10）</span>
+          </div>
+          {previewCount > 1 && (
+            <span style={{ fontSize: 12, color: "#999" }}>生成多个预览可对比不同剪辑效果</span>
+          )}
+        </div>
+      )}
+
+      {/* 预览生成按钮（idle 状态） */}
+      {isIdle && (
+        <div className="xx-preview-generate-section">
+          <div className="xx-preview-generate-hint">
+            <PlayCircleOutlined style={{ fontSize: 32, color: "#3b82f6", marginBottom: 12 }} />
+            <p className="xx-preview-generate-title">一键生成剪辑预览</p>
+            <p className="xx-preview-generate-desc">
+              AI 将根据您选择的模板、素材和配音，智能生成
+              {previewCount > 1 ? `${previewCount}个不同版本的` : ""}视频预览（480p 低清版）
+            </p>
+          </div>
+          <button
+            className="xx-btn xx-btn-primary xx-preview-generate-btn"
+            onClick={onGeneratePreview}
+          >
+            ✨ 生成预览{previewCount > 1 ? `（${previewCount}个）` : ""}
+          </button>
+        </div>
+      )}
+
+      {/* 整体排队中（所有都在 pending） */}
+      {anyGenerating && items.every((it) => it.status === "pending") && (
+        <div className="xx-preview-loading">
+          <ClockCircleOutlined style={{ fontSize: 32, color: "#faad14" }} spin />
+          <p className="xx-preview-loading-text">预览排队中...</p>
+          <p className="xx-preview-loading-desc">正在等待渲染资源，请稍候</p>
+        </div>
+      )}
+
+      {/* 多预览网格（生成中/完成/部分完成） */}
+      {(anyGenerating || overallStatus === "ready") && items.length > 0 && (
+        <div
+          className="xx-preview-grid"
+          style={{
+            display: "grid",
+            gridTemplateColumns: `repeat(${Math.min(items.length, 3)}, 1fr)`,
+            gap: 12,
+            maxWidth: `${Math.min(items.length, 3) * 280 + (Math.min(items.length, 3) - 1) * 12}px`,
+            margin: "0 auto 16px",
+          }}
+        >
+          {items.map((item) => {
+            const isSelected = item.index === selectedIndex
+            return (
+              <div
+                key={item.index}
+                onClick={() => {
+                  if (item.status === "ready") onSelectPreview(item.index)
+                }}
+                style={{
+                  borderRadius: 8,
+                  border: isSelected ? "2px solid #1677ff" : "1px solid #e8e8e8",
+                  overflow: "hidden",
+                  cursor: item.status === "ready" ? "pointer" : "default",
+                  opacity: item.status === "error" ? 0.6 : 1,
+                  transition: "all 0.2s",
+                }}
+              >
+                {/* 缩略图/状态区域 */}
+                <div
+                  style={{
+                    aspectRatio,
+                    background: "#000",
+                    display: "flex",
+                    alignItems: "center",
+                    justifyContent: "center",
+                    position: "relative",
+                  }}
+                >
+                  {item.status === "ready" && item.result && (
+                    <video
+                      src={item.result.videoUrl}
+                      controls
+                      autoPlay
+                      muted
+                      loop
+                      preload="metadata"
+                      style={{
+                        width: "100%",
+                        height: "100%",
+                        objectFit: "cover",
+                      }}
+                    />
+                  )}
+                  {(item.status === "pending" || item.status === "generating") && (
+                    <div style={{ textAlign: "center" }}>
+                      <LoadingOutlined style={{ fontSize: 24, color: "#fff" }} spin />
+                      <p style={{ color: "rgba(255,255,255,0.8)", fontSize: 12, marginTop: 8 }}>
+                        {item.status === "pending" ? "排队中..." : `生成中 ${item.progress}%`}
+                      </p>
+                    </div>
+                  )}
+                  {item.status === "error" && (
+                    <div style={{ textAlign: "center", padding: 8 }}>
+                      <ExclamationCircleFilled style={{ fontSize: 20, color: "#ef4444" }} />
+                      <p
+                        style={{
+                          color: "rgba(255,255,255,0.7)",
+                          fontSize: 11,
+                          marginTop: 4,
+                        }}
+                      >
+                        生成失败
+                      </p>
+                    </div>
+                  )}
+                  {/* 选中角标 */}
+                  {isSelected && item.status === "ready" && (
+                    <div
+                      style={{
+                        position: "absolute",
+                        top: 4,
+                        right: 4,
+                        background: "#1677ff",
+                        color: "#fff",
+                        fontSize: 10,
+                        padding: "2px 6px",
+                        borderRadius: 4,
+                      }}
+                    >
+                      预览 #{item.index + 1}
+                    </div>
+                  )}
+                </div>
+                {/* 底部信息 */}
+                {item.status === "ready" && item.result && (
+                  <div
+                    style={{
+                      padding: "6px 8px",
+                      background: "#fafafa",
+                      fontSize: 11,
+                      color: "#666",
+                      display: "flex",
+                      justifyContent: "space-between",
+                    }}
+                  >
+                    <span>{item.result.duration.toFixed(1)}秒</span>
+                    <span>{item.result.clipCount}段</span>
+                  </div>
+                )}
+              </div>
+            )
+          })}
+        </div>
+      )}
+
+      {/* 整体进度条（多预览生成中） */}
+      {anyGenerating && (
+        <div className="xx-preview-progress-bar" style={{ marginBottom: 12 }}>
+          <div className="xx-preview-progress-fill" style={{ width: `${overallProgress}%` }} />
+        </div>
+      )}
+
+      {/* 全部完成提示 */}
+      {overallStatus === "ready" && (
+        <div className="xx-preview-tip">
+          <CheckCircleFilled style={{ color: "#52c41a", marginRight: 8 }} />
+          <span>
+            {items.filter((it) => it.status === "ready").length} 个预览生成成功
+            {items.length > 1 ? "，点击选择要查看的版本" : "，确认效果后进入下一步"}
+          </span>
+          <button
+            className="xx-preview-regenerate-btn"
+            onClick={onRegeneratePreview}
+            title="重新生成"
+          >
+            <ReloadOutlined /> 重新生成
+          </button>
+        </div>
+      )}
+
+      {/* 全部失败 */}
+      {isError && (
+        <div className="xx-preview-error">
+          <ExclamationCircleFilled style={{ fontSize: 28, color: "#ef4444" }} />
+          <p className="xx-preview-error-text">预览生成失败</p>
+          <p className="xx-preview-error-desc">
+            {typeof overallError === "string" && overallError ? overallError : "请稍后重试"}
+          </p>
+          <button className="xx-btn xx-btn-primary" onClick={onRegeneratePreview}>
+            <ReloadOutlined /> 重新生成
+          </button>
+        </div>
+      )}
+    </div>
+  )
+}
+
+export default Step4GeneratePreview
@@ -1,19 +1,17 @@
 /**
 * Step 4 标题设置组件
- * 仅包含标题文字输入 + AI 标题生成
- * 标题样式面板已迁移到 Step5（生成预览页面）
 */
 import React from "react"
 import { AutoComplete } from "antd"
+import { POSITION_OPTIONS, FONT_OPTIONS } from "../constants"
 import type { TitleSettings } from "../types"
 import { useStep4Title } from "../hooks/useStep4Title"
 import AiTitleGenerator from "./title/AiTitleGenerator"
+import TitleStylePanel from "./title/TitleStylePanel"

 interface Step4TitleSettingsProps {
  titleSettings: TitleSettings
  onTitleSettingsChange: (settings: TitleSettings) => void
-  /** 当前选中的模板/草稿 ID，用于自动保存 */
-  selectedTemplate?: string
 }

 const Step4TitleSettings: React.FC<Step4TitleSettingsProps> = (props) => {
@@ -112,6 +110,23 @@ const Step4TitleSettings: React.FC<Step4TitleSettingsProps> = (props) => {
          </div>
        </>
      )}
+
+      {/* 样式面板始终可见，两种模式下都可调整标题展示样式 */}
+      <TitleStylePanel
+        settings={t.titleSettings}
+        onUpdatePosition={t.updatePosition}
+        onUpdateFont={t.updateFont}
+        onUpdateSize={t.updateSize}
+        onToggleBold={t.toggleBold}
+        onToggleItalic={t.toggleItalic}
+        onToggleStroke={t.toggleStroke}
+        onToggleShadow={t.toggleShadow}
+        onApplyPreset={t.applyPreset}
+        activePreset={t.activePreset}
+        titlePresets={t.titlePresets}
+        POSITION_OPTIONS={POSITION_OPTIONS}
+        FONT_OPTIONS={FONT_OPTIONS}
+      />
    </div>
  )
 }
@@ -1,83 +0,0 @@
-/**
- * Step 5 预览设置组件
- *
- * 前端实时预览架构：
- * - 右侧面板使用 FrontendPreviewPlayer 实时播放素材片段
- * - 标题样式可实时调整，CSS 层即时叠加预览
- * - 点"确认生成"时触发一次服务器渲染
- */
-import React from "react"
-import { PlayCircleOutlined } from "@ant-design/icons"
-import { POSITION_OPTIONS, FONT_OPTIONS } from "../constants"
-import type { TitleSettings } from "../types"
-import TitleStylePanel from "./title/TitleStylePanel"
-
-interface Step5GeneratePreviewProps {
-  titleSettings: TitleSettings
-  onUpdatePosition: (position: string) => void
-  onUpdateFont: (font: string) => void
-  onUpdateSize: (size: number) => void
-  onToggleBold: () => void
-  onToggleItalic: () => void
-  onToggleStroke: () => void
-  onToggleShadow: () => void
-  onApplyPreset: (presetKey: string) => void
-  activePreset: string | null
-  titlePresets: { key: string; label: string; previewStyle: React.CSSProperties }[]
-}
-
-const Step5GeneratePreview: React.FC<Step5GeneratePreviewProps> = ({
-  titleSettings,
-  onUpdatePosition,
-  onUpdateFont,
-  onUpdateSize,
-  onToggleBold,
-  onToggleItalic,
-  onToggleStroke,
-  onToggleShadow,
-  onApplyPreset,
-  activePreset,
-  titlePresets,
-}) => {
-  return (
-    <div className="xx-form-section">
-      <h3>🎬 预览设置</h3>
-
-      <div
-        style={{
-          display: "flex",
-          alignItems: "center",
-          gap: 8,
-          padding: "12px 16px",
-          background: "rgba(59, 130, 246, 0.08)",
-          borderRadius: 8,
-          marginBottom: 16,
-          border: "1px solid rgba(59, 130, 246, 0.15)",
-        }}
-      >
-        <PlayCircleOutlined style={{ fontSize: 18, color: "#3b82f6" }} />
-        <span style={{ fontSize: 13, color: "var(--text-secondary, #666)" }}>
-          右侧为实时预览，选完素材即可播放。确认生成后服务器渲染最终视频
-        </span>
-      </div>
-
-      <TitleStylePanel
-        settings={titleSettings}
-        onUpdatePosition={onUpdatePosition}
-        onUpdateFont={onUpdateFont}
-        onUpdateSize={onUpdateSize}
-        onToggleBold={onToggleBold}
-        onToggleItalic={onToggleItalic}
-        onToggleStroke={onToggleStroke}
-        onToggleShadow={onToggleShadow}
-        onApplyPreset={onApplyPreset}
-        activePreset={activePreset}
-        titlePresets={titlePresets}
-        POSITION_OPTIONS={POSITION_OPTIONS}
-        FONT_OPTIONS={FONT_OPTIONS}
-      />
-    </div>
-  )
-}
-
-export default Step5GeneratePreview
@@ -5,28 +5,16 @@
 import React, { useState, useRef, useCallback } from "react"
 import { useNavigate } from "react-router-dom"
 import { useQuery } from "@tanstack/react-query"
-import { AudioOutlined, SoundOutlined, WarningOutlined } from "@ant-design/icons"
-import { Modal } from "antd"
+import { AudioOutlined, SoundOutlined } from "@ant-design/icons"
 import { getAssetsByKind } from "@/api/assets"
 import type { AssetItem } from "@/api/assets"

 interface Step5VoiceSelectProps {
  selectedVoice: string
  onSelectedVoiceChange: (id: string) => void
-  totalVideoDuration?: number
 }

 /** 格式化时长 mm:ss */
-/** 获取素材实际时长（优先顶层 duration，fallback 到 metadata.duration） */
-const getDuration = (item: AssetItem): number => {
-  return item.duration ?? (item.metadata?.duration as number) ?? 0
-}
-
-/** 获取素材实际文件大小 */
-const getFileSize = (item: AssetItem): number => {
-  return item.file_size ?? (item.metadata?.file_size as number) ?? 0
-}
-
 const formatDuration = (seconds?: number): string => {
  if (!seconds || seconds <= 0) return "00:00"
  const m = Math.floor(seconds / 60)
@@ -46,13 +34,10 @@ const formatFileSize = (bytes?: number): string => {
 const Step5VoiceSelect: React.FC<Step5VoiceSelectProps> = ({
  selectedVoice,
  onSelectedVoiceChange,
-  totalVideoDuration = 0,
 }) => {
  const navigate = useNavigate()
  const [playingId, setPlayingId] = useState<string | null>(null)
  const audioRef = useRef<HTMLAudioElement | null>(null)
-  const [durationWarningOpen, setDurationWarningOpen] = useState(false)
-  const [pendingVoiceId, setPendingVoiceId] = useState<string | null>(null)

  // 获取用户上传的配音素材
  const { data: materials = [], isLoading } = useQuery({
@@ -93,38 +78,14 @@ const Step5VoiceSelect: React.FC<Step5VoiceSelectProps> = ({
    [playingId],
  )

-  /** 选中素材（含时长校验） */
+  /** 选中素材 */
  const handleSelect = useCallback(
    (id: string) => {
-      // 如果启用了时长校验，且配音时长不足
-      if (totalVideoDuration > 0) {
-        const material = materials.find((m) => m.id === id)
-        if (material && getDuration(material) < totalVideoDuration) {
-          setPendingVoiceId(id)
-          setDurationWarningOpen(true)
-          return
-        }
-      }
      onSelectedVoiceChange(id)
    },
-    [onSelectedVoiceChange, totalVideoDuration, materials],
+    [onSelectedVoiceChange],
  )

-  /** 确认使用时长不足的配音 */
-  const handleConfirmUseAnyway = useCallback(() => {
-    if (pendingVoiceId) {
-      onSelectedVoiceChange(pendingVoiceId)
-    }
-    setDurationWarningOpen(false)
-    setPendingVoiceId(null)
-  }, [pendingVoiceId, onSelectedVoiceChange])
-
-  /** 取消选择 */
-  const handleCancelSelection = useCallback(() => {
-    setDurationWarningOpen(false)
-    setPendingVoiceId(null)
-  }, [])
-
  /** 跳转到配音库上传 */
  const handleGoToUpload = useCallback(() => {
    navigate("/app/voices")
@@ -277,66 +238,15 @@ const Step5VoiceSelect: React.FC<Step5VoiceSelectProps> = ({
                  justifyContent: "space-between",
                  fontSize: 12,
                  color: "#999",
-                  alignItems: "center",
                }}
              >
-                <span style={{ display: "flex", alignItems: "center", gap: 4 }}>
-                  {formatDuration(getDuration(item))}
-                  {totalVideoDuration > 0 && getDuration(item) < Number(totalVideoDuration) && (
-                    <span
-                      style={{
-                        color: "#ff4d4f",
-                        fontSize: 11,
-                        fontWeight: 500,
-                        display: "inline-flex",
-                        alignItems: "center",
-                        gap: 2,
-                      }}
-                    >
-                      <WarningOutlined />
-                      时长不足
-                    </span>
-                  )}
-                </span>
-                <span>{formatFileSize(getFileSize(item))}</span>
+                <span>{formatDuration(item.duration)}</span>
+                <span>{formatFileSize(item.file_size)}</span>
              </div>
            </div>
          )
        })}
      </div>
-
-      {/* 时长不足警告弹窗 */}
-      <Modal
-        title={
-          <span style={{ display: "flex", alignItems: "center", gap: 8 }}>
-            <WarningOutlined style={{ color: "#faad14" }} />
-            配音时长不足
-          </span>
-        }
-        open={durationWarningOpen}
-        onOk={handleConfirmUseAnyway}
-        onCancel={handleCancelSelection}
-        okText="仍要使用"
-        cancelText="重新选择"
-        okButtonProps={{ danger: true }}
-      >
-        {(() => {
-          const pendingMaterial = pendingVoiceId
-            ? materials.find((m) => m.id === pendingVoiceId)
-            : null
-          return (
-            <p>
-              该配音时长（
-              <strong>
-                {pendingMaterial ? formatDuration(getDuration(pendingMaterial)) : "--"}
-              </strong>
-              ）短于视频总时长（
-              <strong>{formatDuration(totalVideoDuration)}</strong>
-              ），播放时配音可能提前结束，建议选择更长的配音素材。
-            </p>
-          )
-        })()}
-      </Modal>
    </div>
  )
 }
@@ -14,22 +14,6 @@ interface Step6CoverSettingsProps {
  assetIds?: string[]
  /** 当前选中的模板 ID */
  selectedTemplate?: string
-  /** Step4 标题设置，用于预览视频烧录标题 & 封面叠加标题 */
-  titleSettings?: import("../types").TitleSettings
-  /** 预览任务创建回调——将 task_id 暴露给父组件供 confirmGeneration 复用 */
-  onPreviewTaskCreated?: (taskId: string) => void
-  /** 从预览响应中提取到 source_edit_plan_id 时的回调 */
-  onSourceEditPlanIdExtracted?: (planId: string) => void
-  /** 配音模式 */
-  voiceMode?: "preset" | "custom" | "clone"
-  /** 选中的配音素材 ID */
-  selectedVoice?: string
-  /** 选中的克隆音色 ID */
-  selectedClonedVoice?: string
-  /** BGM 开关 */
-  bgm?: boolean
-  /** BGM 配置 */
-  bgmConfig?: { enabled: boolean; music_id?: string }
 }

 const Step6CoverSettings: React.FC<Step6CoverSettingsProps> = (props) => {
@@ -56,14 +40,6 @@ const Step6CoverSettings: React.FC<Step6CoverSettingsProps> = (props) => {
    duration: props.duration,
    assetIds: props.assetIds,
    selectedTemplate: props.selectedTemplate,
-    titleSettings: props.titleSettings,
-    onPreviewTaskCreated: props.onPreviewTaskCreated,
-    onSourceEditPlanIdExtracted: props.onSourceEditPlanIdExtracted,
-    voiceMode: props.voiceMode,
-    selectedVoice: props.selectedVoice,
-    selectedClonedVoice: props.selectedClonedVoice,
-    bgm: props.bgm,
-    bgmConfig: props.bgmConfig,
  })

  const handleAutoGenerate = () => {
@@ -30,7 +30,7 @@ export const UploadCoverPicker: React.FC<UploadCoverPickerProps> = ({ uploadUrl,
          <div className="xx-cover-upload-placeholder">
            <span style={{ fontSize: 32 }}>📤</span>
            <span className="xx-cover-upload-text">点击上传封面图片</span>
-            <span className="xx-cover-upload-hint">支持 JPG / PNG，建议 9:16 比例</span>
+            <span className="xx-cover-upload-hint">支持 JPG / PNG，建议 16:9 比例</span>
          </div>
        )}
        <input
@@ -2,7 +2,6 @@
 * 标题预设样式网格
 */
 import React from "react"
-import { getFontFamily } from "../../constants"

 interface TitlePresetItem {
  key: string
@@ -36,7 +35,7 @@ const TitlePresetsGrid: React.FC<TitlePresetsGridProps> = ({
          >
            <span
              className="xx-title-preset-preview-text"
-              style={{ ...p.previewStyle, fontFamily: getFontFamily(fontFamily || "思源黑体") }}
+              style={{ ...p.previewStyle, ...(fontFamily ? { fontFamily } : {}) }}
            >
              标题
            </span>
@@ -32,8 +32,8 @@ export const STEPS = [
  { key: 1, label: "选择模板" },
  { key: 2, label: "选择素材" },
  { key: 3, label: "选择配音" },
-  { key: 4, label: "选择标题" },
-  { key: 5, label: "生成预览" },
+  { key: 4, label: "生成预览" },
+  { key: 5, label: "选择标题" },
  { key: 6, label: "选择封面" },
  { key: 7, label: "确认生成" },
 ]
@@ -56,21 +56,6 @@ export const FONT_OPTIONS = [
  "华康俪金黑",
 ]

-/* ── 标题字体 CSS font-family 映射（中文显示名 → 浏览器可识别的字体栈） ── */
-export const FONT_FAMILY_MAP: Record<string, string> = {
-  思源黑体: '"Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif',
-  思源宋体: '"Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif',
-  苹方: '"PingFang SC", -apple-system, "Helvetica Neue", sans-serif',
-  PingFang: '"PingFang SC", -apple-system, "Helvetica Neue", sans-serif',
-  微软雅黑: '"Microsoft YaHei", "PingFang SC", sans-serif',
-  楷体: '"KaiTi", "STKaiti", "DFKai-SB", serif',
-  华康俪金黑: '"华康俪金黑", "DFLiJinHei-W8", "Source Han Sans SC", "Microsoft YaHei", sans-serif',
-}
-
-export function getFontFamily(font: string): string {
-  return FONT_FAMILY_MAP[font] || FONT_FAMILY_MAP["思源黑体"]
-}
-
 /* ── 标题样式预设 ── */
 export const TITLE_PRESETS = [
  {
@@ -891,16 +891,17 @@

 /* ── 视频预览 ── */
 .xx-preview-video {
-  aspect-ratio: 9 / 16;
+  aspect-ratio: 16 / 9;
  max-height: 400px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-gray-900), var(--color-primary-900));
+  display: grid;
+  place-items: center;
  color: var(--text-inverse);
  font-size: 36px;
  position: relative;
  overflow: hidden;
  margin-bottom: 16px;
-  isolation: isolate;
 }

 .xx-preview-video::before {
@@ -909,7 +910,6 @@
  inset: 0;
  background: radial-gradient(circle at 72% 28%, rgba(255, 255, 255, 0.2), transparent 40%);
  pointer-events: none;
-  z-index: 0;
 }

 .xx-preview-video video {
@@ -1516,7 +1516,7 @@
 .xx-smart-match-thumb {
  position: relative;
  width: 100%;
-  aspect-ratio: 9 / 16;
+  aspect-ratio: 16 / 9;
  background: #f1f5f9;
  overflow: hidden;
 }
@@ -2144,7 +2144,7 @@
 }

 .xx-cover-frame-placeholder {
-  aspect-ratio: 9 / 16;
+  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--radius-md);
  display: flex;
@@ -2247,7 +2247,7 @@
 }

 .xx-cover-upload-area {
-  aspect-ratio: 9 / 16;
+  aspect-ratio: 16 / 9;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
@@ -2308,9 +2308,7 @@

 .xx-cover-preview-box {
  position: relative;
-  aspect-ratio: 9 / 16;
-  max-width: 180px;
-  margin: 0 auto;
+  aspect-ratio: 16 / 9;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  overflow: hidden;
@@ -2525,7 +2523,6 @@
 .xx-generate-right-col {
  display: flex;
  flex-direction: column;
-  align-items: center;
  gap: 16px;
 }

@@ -2669,7 +2666,7 @@
 .xx-preview-video-wrapper .xx-preview-video {
  max-width: 300px;
  width: 100%;
-  aspect-ratio: 9 / 16;
+  aspect-ratio: 16 / 9;
  margin-bottom: 0;
 }

@@ -2775,7 +2772,7 @@

 .xx-video-thumb {
  position: relative;
-  aspect-ratio: 9 / 16;
+  aspect-ratio: 16 / 9;
  background: var(--bg-tertiary);
  overflow: hidden;
 }
@@ -2884,11 +2881,11 @@
  overflow: hidden;
 }

-.xx-preview-modal .ant-modal-content {
+.ant-modal-content {
  padding: 0 !important;
 }

-.xx-preview-modal .ant-modal-close {
+.ant-modal-close {
  color: #fff !important;
 }

@@ -19,17 +19,8 @@ export interface UseGenerateVideoProps {
  autoSubtitles: boolean
  bgm: boolean
  generateCount: number
-  /** 当前草稿 ID（URL 参数 edit_plan_id，用于后端回写任务关联） */
-  sourceEditPlanId?: string | null
-  /** 预览任务 ID（由 useStep6Cover 创建后写入，供 confirmGeneration 复用预览产物） */
-  previewTaskId?: string | null
-  /** BGM 配置（来自模板 bgm_config，受 bgm 开关控制） */
-  bgmConfig?: {
-    enabled: boolean
-    music_id?: string
-  }
-  /** 生成成功后的回调（用于清除持久化的 previewTaskId 等状态） */
-  onGenerationSuccess?: () => void
+  /** 预览任务的 task_id（用于新确认生成 API） */
+  previewTaskId: string
 }

 /** 生成阶段 */
@@ -1,146 +1,87 @@
 import { useRef, useCallback } from "react"
 import { message } from "antd"
-import axios from "axios"
-import { getGenerationTask } from "@/api/tasks/tasks"
-import { getGenerationTaskResults } from "@/api/template-editor"
+import { getGenerationStatus, getGenerationTaskResults } from "@/api/template-editor"
 import { safeExtractError } from "./errorUtils"

 interface UseGenerationPollingOptions {
+  templateId: string
  onProgress: (progress: number) => void
  onComplete: (videos: unknown[]) => void
  onFailed: (errorMsg: string) => void
 }

-/** 最大连续错误次数（仅对可重试错误），超过后终止轮询 */
-const MAX_RETRYABLE_ERRORS = 10
-/** 获取结果的最大重试次数 */
-const MAX_RESULTS_RETRIES = 3
-
 /**
- * 生成状态轮询 Hook（v2 — 改用 /generation/tasks/{task_id}）
- *
- * 旧版轮询 GET /templates/{id}/editor/generation-status 依赖 plan 维度状态，
- * 在编辑流程数据链路断裂时拿不到 task_id。新版直接使用 POST /generation/tasks
- * 返回的 task_id 轮询任务详情，不再依赖 plan。
- *
- * 错误处理：
- * - 4xx（尤其 404）视为不可恢复，立即 onFailed，不再重试
- * - 5xx / 网络错误重试，最多连续 MAX_RETRYABLE_ERRORS 次
- * - 任务完成后获取结果失败会重试 MAX_RESULTS_RETRIES 次，仍失败则 onFailed
+ * 生成状态轮询 Hook
+ * 轮询生成状态，更新进度，处理完成/失败
 */
 export const useGenerationPolling = ({
+  templateId,
  onProgress,
  onComplete,
  onFailed,
 }: UseGenerationPollingOptions) => {
  const progressTimer = useRef<ReturnType<typeof setTimeout>>()
-  const cancelledRef = useRef(false)

  const clearTimer = useCallback(() => {
-    cancelledRef.current = true
    if (progressTimer.current) {
      clearTimeout(progressTimer.current)
      progressTimer.current = undefined
    }
  }, [])

-  /** 任务完成后拉取结果列表，带重试 */
-  const fetchResultsWithRetry = useCallback(
-    async (taskId: string, attempt = 0): Promise<unknown[] | null> => {
+  const startPolling = useCallback(() => {
+    const poll = async () => {
      try {
-        return await getGenerationTaskResults(taskId)
-      } catch (err) {
-        if (cancelledRef.current) return null
-        console.error(`[获取生成结果失败] 第 ${attempt + 1} 次`, err)
-        if (attempt < MAX_RESULTS_RETRIES - 1) {
-          await new Promise((resolve) => setTimeout(resolve, 1000 * (attempt + 1)))
-          return fetchResultsWithRetry(taskId, attempt + 1)
-        }
-        return null
-      }
-    },
-    [],
-  )
+        const data = await getGenerationStatus(templateId)

-  const startPolling = useCallback(
-    (taskId: string) => {
-      cancelledRef.current = false
-      let consecutiveErrors = 0
-
-      const poll = async () => {
-        if (cancelledRef.current) return
-        try {
-          const task = await getGenerationTask(taskId)
-          consecutiveErrors = 0
-
-          if (task.status === "completed") {
-            onProgress(100)
-            const videos = await fetchResultsWithRetry(taskId)
-            if (cancelledRef.current) return
-            if (videos === null) {
-              const errorMsg = "视频已生成，但获取结果列表失败，请稍后在任务列表查看"
-              console.error("[生成结果获取失败] taskId:", taskId)
-              onFailed(errorMsg)
-              message.error(errorMsg)
-              return
+        if (data.plan_status === "completed") {
+          onProgress(100)
+          // 获取生成的视频结果
+          let videos: unknown[] = []
+          if (data.generation_task_id) {
+            try {
+              videos = await getGenerationTaskResults(data.generation_task_id)
+            } catch (err) {
+              console.error("[获取生成结果失败]", err)
            }
-            onComplete(videos)
-            message.success("视频生成完成！")
-            return
          }
-
-          if (task.status === "failed" || task.status === "cancelled") {
-            const rawMsg =
-              task.error_info?.error_message ||
-              task.error_message ||
-              (task.status === "cancelled" ? "任务已取消" : "视频生成失败，请联系管理员或重试")
-            const errorMsg = safeExtractError(rawMsg)
-            console.error("[生成失败] taskId:", taskId, "响应:", task)
-            onFailed(errorMsg)
-            message.error(errorMsg)
-            return
-          }
-
-          // pending / waiting / running — 继续轮询
-          const pct = Math.max(0, Math.min(99, Math.round(Number(task.progress) || 0)))
-          onProgress(pct)
-          progressTimer.current = setTimeout(poll, 2000)
-        } catch (pollErr) {
-          if (cancelledRef.current) return
-          console.error("[轮询出错] taskId:", taskId, pollErr)
-
-          // 4xx 不可恢复，立即失败
-          const status = axios.isAxiosError(pollErr) ? pollErr.response?.status : undefined
-          if (status && status >= 400 && status < 500) {
-            const msg =
-              (axios.isAxiosError(pollErr) &&
-                (pollErr.response?.data as { detail?: string; message?: string } | undefined)
-                  ?.detail) ||
-              (axios.isAxiosError(pollErr) &&
-                (pollErr.response?.data as { detail?: string; message?: string } | undefined)
-                  ?.message) ||
-              `查询任务失败 (${status})`
-            const errorMsg = safeExtractError(msg)
-            onFailed(errorMsg)
-            message.error(errorMsg)
-            return
-          }
-
-          consecutiveErrors += 1
-          if (consecutiveErrors >= MAX_RETRYABLE_ERRORS) {
-            const errorMsg = "任务状态查询连续失败，请稍后在任务列表查看结果"
-            onFailed(errorMsg)
-            message.error(errorMsg)
-            return
-          }
-          progressTimer.current = setTimeout(poll, 3000)
+          onComplete(videos)
+          message.success("视频生成完成！")
+          return
+        }
+        if (data.plan_status === "failed") {
+          const dataAny = data as unknown as Record<string, unknown>
+          const rawMsg =
+            dataAny.error_message ||
+            dataAny.error ||
+            dataAny.message ||
+            (Array.isArray(data.clips)
+              ? (data.clips as { status: string; error_message?: string }[]).find(
+                  (c) => c.status === "failed",
+                )?.error_message
+              : undefined) ||
+            "视频生成失败，请联系管理员或重试"
+          const errorMsg = safeExtractError(rawMsg)
+          console.error("[生成失败] templateId:", templateId, "响应:", data)
+          onFailed(errorMsg)
+          message.error(errorMsg)
+          return
        }
-      }

-      progressTimer.current = setTimeout(poll, 1500)
-    },
-    [onProgress, onComplete, onFailed, fetchResultsWithRetry],
-  )
+        const clips = data.clips || []
+        const total = clips.length || 1
+        const done = (clips as { status: string }[]).filter((c) => c.status === "completed").length
+        onProgress(Math.round((done / total) * 100))
+
+        progressTimer.current = setTimeout(poll, 2000)
+      } catch (pollErr) {
+        console.error("[轮询出错] templateId:", templateId, pollErr)
+        progressTimer.current = setTimeout(poll, 3000)
+      }
+    }
+
+    progressTimer.current = setTimeout(poll, 2000)
+  }, [templateId, onProgress, onComplete, onFailed])

  return { startPolling, clearTimer }
 }
@@ -1,124 +0,0 @@
-/**
- * 草稿自动保存工具 Hook
- *
- * 背景：后端 PUT /templates/{id}/editor 的 config 是「整体替换」语义，
- * 直接发送 { config: { asset_ids } } 会把 title 等其他字段覆盖掉。
- * 本 Hook 统一执行「GET 当前 config → 浅合并新字段 → PUT 回去」，
- * 并用串行队列 + AbortController 保证：
- *   - 同一时刻只有一个保存请求在飞
- *   - 快速连续变化时只提交最后一次
- *   - 组件卸载时取消未完成请求
- *   - 保存失败时保留补丁，自动重试（指数退避，最多 5 次）
- *
- * 保存失败只 console.warn，不弹窗、不阻塞。
- */
-import { useCallback, useEffect, useRef } from "react"
-import { getEditPlan, updateEditPlan } from "@/api/template-editor"
-
-type ConfigPatch = Record<string, unknown>
-
-/** 最大自动重试次数 */
-const MAX_RETRIES = 5
-/** 初始重试延迟（ms），每次翻倍 */
-const BASE_RETRY_DELAY = 1000
-
-export function useDraftAutoSave(templateId?: string) {
-  const timerRef = useRef<ReturnType<typeof setTimeout>>()
-  const abortRef = useRef<AbortController | null>(null)
-  // 待合并的补丁队列（解决「保存进行中又来了新变化」）
-  const pendingPatchRef = useRef<ConfigPatch | null>(null)
-  const savingRef = useRef(false)
-  const templateIdRef = useRef(templateId)
-  templateIdRef.current = templateId
-
-  const flush = useCallback(async (retryCount = 0) => {
-    const tid = templateIdRef.current
-    if (!tid) return
-    // 已有保存在飞：把新补丁暂存，等当前请求结束后再合并一次
-    if (savingRef.current) return
-
-    // 快照当前补丁，但先不清空 —— 成功后才清除，失败时保留以便重试
-    const patchToSave = pendingPatchRef.current
-    if (!patchToSave) {
-      savingRef.current = false
-      return
-    }
-    savingRef.current = true
-
-    const controller = new AbortController()
-    abortRef.current = controller
-    try {
-      // 1. 读当前 config（拿最新，避免覆盖别人/别的步骤写入的字段）
-      const current = await getEditPlan(tid)
-      if (controller.signal.aborted) return
-      const merged = { ...(current.config || {}), ...patchToSave }
-      // 2. 写回完整合并后的 config
-      await updateEditPlan(tid, { config: merged }, controller.signal)
-      // 3. 保存成功才清除已保存的补丁
-      //    （保存期间可能有新补丁进来，只清除我们已经保存的部分）
-      pendingPatchRef.current = null
-    } catch (err) {
-      const name = (err as { name?: string })?.name
-      if (name === "CanceledError" || name === "AbortError") {
-        // 组件卸载或新请求取消，不重试
-        return
-      }
-      console.warn("[useDraftAutoSave] 自动保存草稿失败:", err)
-
-      // 保存失败：把本次尝试保存的补丁合并回 pendingPatchRef
-      // （保存期间可能有新补丁，新补丁优先）
-      pendingPatchRef.current = {
-        ...patchToSave,
-        ...(pendingPatchRef.current || {}),
-      }
-
-      // 指数退避重试
-      if (retryCount < MAX_RETRIES && !controller.signal.aborted) {
-        const delay = BASE_RETRY_DELAY * Math.pow(2, retryCount)
-        timerRef.current = setTimeout(() => {
-          void flush(retryCount + 1)
-        }, delay)
-      }
-      // 超过最大重试次数后，补丁仍保留在 pendingPatchRef 中，
-      // 下次 scheduleSave 触发时会一起带上
-    } finally {
-      savingRef.current = false
-      // 保存期间又积累了新变化（且不是在重试路径中），再触发一次
-      if (pendingPatchRef.current && !controller.signal.aborted && retryCount === 0) {
-        timerRef.current = setTimeout(() => {
-          void flush()
-        }, 50)
-      }
-    }
-  }, [])
-
-  /**
-   * 调度一次自动保存（防抖）
-   * @param patch 要合并进 config 的局部字段
-   * @param delay 防抖毫秒数
-   */
-  const scheduleSave = useCallback(
-    (patch: ConfigPatch, delay = 500) => {
-      const tid = templateIdRef.current
-      if (!tid) return
-      if (timerRef.current) clearTimeout(timerRef.current)
-      // 累计补丁（同一周期内多次变化合并成一次写入）
-      pendingPatchRef.current = { ...(pendingPatchRef.current || {}), ...patch }
-      timerRef.current = setTimeout(() => {
-        void flush()
-      }, delay)
-    },
-    [flush],
-  )
-
-  useEffect(() => {
-    return () => {
-      if (timerRef.current) clearTimeout(timerRef.current)
-      if (abortRef.current) abortRef.current.abort()
-    }
-  }, [])
-
-  return { scheduleSave }
-}
-
-export default useDraftAutoSave
@@ -14,7 +14,6 @@ import { useTemplateSelection } from "./useTemplateSelection"
 import { useTitleCoverSync } from "./useTitleCoverSync"
 import { useVoiceState } from "./useVoiceState"
 import { usePlanConfigLoader } from "./usePlanConfigLoader"
-import { usePersistedState } from "../usePersistedState"

 const DEFAULT_TITLE_SETTINGS: TitleSettings = {
  aiAutoSelect: false,
@@ -83,27 +82,11 @@ export interface GenerateFormState {
  editPlanId: string | null
  planConfigStr: string | null

-  /**
-   * 传给 Worker 的 source_edit_plan_id。
-   * 仅使用 URL 中的 edit_plan_id（从剪辑模板编辑器跳转时携带）。
-   * URL 没有时传 null，后端正式生成 API 会通过 template_id+user_id 兜底查找正确的 plan。
-   * 注意：selectedTemplate 是模板 ID，不是 edit_plan_id，不能作为此值传递。
-   */
-  sourceEditPlanId: string | null
-
  /* 预览弹窗 */
  previewVideo: GeneratedVideo | null
  setPreviewVideo: (v: GeneratedVideo | null) => void
  previewModalOpen: boolean
  setPreviewModalOpen: (open: boolean) => void
-
-  /** 预览任务 ID（由 useStep6Cover 创建后写入，供 useGenerateVideo 复用） */
-  previewTaskId: string | null
-  setPreviewTaskId: (id: string | null) => void
-
-  /** 从预览响应中提取的 source_edit_plan_id（供 fallback 路径使用） */
-  storedSourceEditPlanId: string | null
-  setStoredSourceEditPlanId: (planId: string | null) => void
 }

 export const useGenerateFormState = (): GenerateFormState => {
@@ -117,11 +100,6 @@ export const useGenerateFormState = (): GenerateFormState => {
  /* ── 模板选择 ── */
  const { selectedTemplate, setSelectedTemplate, userTemplates } = useTemplateSelection()

-  /* ── source_edit_plan_id：仅取 URL 参数，无则 null 让后端兜底 ── */
-  // selectedTemplate 是模板 ID 而非 edit_plan_id，不能混淆；
-  // 后端正式生成 API 会在 source_edit_plan_id 为空时通过 template_id+user_id 自动关联。
-  const sourceEditPlanId = editPlanId || null
-
  /* ── 素材 ── */
  const [selectedMaterials, setSelectedMaterials] = useState<string[]>([])
  const [materialMode, setMaterialMode] = useState<"manual" | "auto">("manual")
@@ -169,30 +147,6 @@ export const useGenerateFormState = (): GenerateFormState => {
  const [previewVideo, setPreviewVideo] = useState<GeneratedVideo | null>(null)
  const [previewModalOpen, setPreviewModalOpen] = useState(false)

-  /* ── 预览任务 ID（useStep6Cover 创建预览时写入，useGenerateVideo 复用） ── */
-  // 持久化到 localStorage，key 按 editPlanId/templateId 区分，刷新页面后可恢复
-  const previewStorageKey = editPlanId
-    ? `preview_task_id_${editPlanId}`
-    : selectedTemplate
-      ? `preview_task_id_tpl_${selectedTemplate}`
-      : null
-  const [previewTaskId, setPreviewTaskId] = usePersistedState<string | null>(
-    previewStorageKey,
-    null,
-  )
-
-  /* ── 从预览响应中提取的 source_edit_plan_id（供 fallback 路径使用） ── */
-  // 持久化到 localStorage，刷新页面后 fallback 路径仍能正确传递 source_edit_plan_id
-  const planIdStorageKey = editPlanId
-    ? `source_edit_plan_id_${editPlanId}`
-    : selectedTemplate
-      ? `source_edit_plan_id_tpl_${selectedTemplate}`
-      : null
-  const [storedSourceEditPlanId, setStoredSourceEditPlanId] = usePersistedState<string | null>(
-    planIdStorageKey,
-    null,
-  )
-
  /* ── 从 URL / 编辑计划加载配置 ── */
  usePlanConfigLoader({
    editPlanId,
@@ -235,15 +189,10 @@ export const useGenerateFormState = (): GenerateFormState => {
    autoSubtitles,
    bgm,
    editPlanId,
-    sourceEditPlanId,
    planConfigStr,
    previewVideo,
    setPreviewVideo,
    previewModalOpen,
    setPreviewModalOpen,
-    previewTaskId,
-    setPreviewTaskId,
-    storedSourceEditPlanId,
-    setStoredSourceEditPlanId,
  }
 }
@@ -5,16 +5,15 @@
 import { useState, useCallback } from "react"
 import { message } from "antd"
 import type { GeneratedVideo } from "@/api/template-editor"
-import { createGenerationTask } from "@/api/tasks/tasks"
+import { confirmGeneration } from "@/api/generation"
 import type { UseGenerateVideoProps } from "./generate-video/types"
 import { getGenerationPhase } from "./generate-video/phase"
 import { useGenerationPolling } from "./generate-video/useGenerationPolling"
 import { validateGenerateInputs } from "./generate-video/buildPayload"
-import { calculateResolution } from "../utils/calculateResolution"
 import { extractBackendError, translateError } from "./generate-video/errorUtils"

 export function useGenerateVideo(props: UseGenerateVideoProps) {
-  const { selectedTemplate, onGenerationSuccess } = props
+  const { selectedTemplate } = props

  /* ── 生成状态 ── */
  const [generating, setGenerating] = useState(false)
@@ -24,22 +23,18 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
  const [generatedVideos, setGeneratedVideos] = useState<GeneratedVideo[]>([])

  const handleProgress = useCallback((p: number) => setProgress(p), [])
-  const handleComplete = useCallback(
-    (videos: unknown[]) => {
-      setGenerating(false)
-      setGenerated(true)
-      setGeneratedVideos(videos as GeneratedVideo[])
-      // 生成成功后清除持久化的预览状态，避免下次进入复用旧任务
-      onGenerationSuccess?.()
-    },
-    [onGenerationSuccess],
-  )
+  const handleComplete = useCallback((videos: unknown[]) => {
+    setGenerating(false)
+    setGenerated(true)
+    setGeneratedVideos(videos as GeneratedVideo[])
+  }, [])
  const handleFailed = useCallback((errorMsg: string) => {
    setGenerating(false)
    setGenerateError(errorMsg)
  }, [])

  const { startPolling, clearTimer } = useGenerationPolling({
+    templateId: selectedTemplate,
    onProgress: handleProgress,
    onComplete: handleComplete,
    onFailed: handleFailed,
@@ -60,61 +55,20 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
    clearTimer()

    try {
-      // 解析分辨率（共享工具函数）
-      const { width: outputWidth, height: outputHeight } = calculateResolution(
-        props.videoRatio || "9:16",
-      )
+      // 使用确认生成 API（基于预览任务）
+      // 解析分辨率
+      const [widthStr, heightStr] = (props.videoRatio || "1080x1920").split("x")
+      const outputWidth = parseInt(widthStr, 10) || 1080
+      const outputHeight = parseInt(heightStr, 10) || 1920

-      const assetIds =
-        props.materialMode === "auto" ? props.smartSelectedIds : props.selectedMaterials
-
-      // 封面 URL：优先 AI 生成缩略图，兜底用户上传
-      const coverUrl = props.coverSettings?.thumbnail_url || props.coverSettings?.upload_url || ""
-
-      // 解析配音参数：voiceMode=clone 时用 selectedClonedVoice，否则用 selectedVoice
-      const voiceLibraryId =
-        props.voiceMode === "clone" ? props.selectedClonedVoice || "" : props.selectedVoice || ""
-
-      // 创建生成任务（服务器渲染）
-      const taskResp = await createGenerationTask({
-        template_id: selectedTemplate,
-        asset_ids: assetIds,
+      await confirmGeneration(props.previewTaskId, {
        output_width: outputWidth,
        output_height: outputHeight,
-        cover_url: coverUrl,
-        custom_title: props.titleSettings?.title || "",
-        duration: props.duration || undefined,
-        video_ratio: props.videoRatio,
-        // 配音：优先用 voice_library_id（配音素材库 asset），兜底 voice_ids
-        ...(voiceLibraryId ? { voice_library_id: voiceLibraryId } : {}),
-        ...(props.selectedVoice && !voiceLibraryId ? { voice_ids: [props.selectedVoice] } : {}),
-        // BGM 配置：受 bgm 开关控制，enabled=false 时也显式传覆盖模板 BGM
-        bgm_config: {
-          enabled: props.bgm !== false,
-          ...(props.bgmConfig?.music_id ? { preset_id: props.bgmConfig.music_id } : {}),
-        },
-        ...(props.sourceEditPlanId ? { source_edit_plan_id: props.sourceEditPlanId } : {}),
-        ...(props.titleSettings?.title
-          ? {
-              title_config: {
-                text: props.titleSettings.title,
-                font: props.titleSettings.font,
-                font_size: props.titleSettings.size,
-                font_color: props.titleSettings.color,
-                position: props.titleSettings.position,
-                bold: props.titleSettings.bold,
-                stroke: props.titleSettings.stroke,
-                shadow: props.titleSettings.shadow,
-              },
-            }
-          : {}),
+        cover_url: props.coverSettings.upload_url || "",
+        custom_title: props.titleSettings.title || "",
      })
-      const taskId = taskResp.items?.[0]?.id

-      if (!taskId) {
-        throw new Error("创建任务成功但未返回任务 ID，请稍后在任务列表查看")
-      }
-      startPolling(taskId)
+      startPolling()
    } catch (err: unknown) {
      console.error("[handleGenerate] 生成失败:", err)
      setGenerating(false)
@@ -124,7 +78,7 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
      setGenerateError(finalMsg)
      message.error(finalMsg)
    }
-  }, [props, clearTimer, startPolling, selectedTemplate])
+  }, [props, clearTimer, startPolling])

  /* 重新生成（失败后重试） */
  const retry = useCallback(() => {
@@ -1,63 +0,0 @@
-import { useState, useEffect, useCallback, useRef } from "react"
-
-/**
- * 持久化到 localStorage 的 state hook
- *
- * 用于在页面刷新后恢复 previewTaskId / sourceEditPlanId 等关键状态。
- * 当 localStorage 不可用（SSR、隐私模式等）时自动降级为普通 useState。
- * 当 key 变化时（例如切换模板），自动从新 key 重新读取并更新 state。
- */
-export function usePersistedState<T>(
-  key: string | null | undefined,
-  defaultValue: T,
-): [T, (value: T | ((prev: T) => T)) => void] {
-  const storageKey = key ? `xiaoxia_${key}` : null
-  // defaultValue 用 ref 持有，避免作为 useEffect 依赖导致频繁重跑
-  const defaultValueRef = useRef(defaultValue)
-  defaultValueRef.current = defaultValue
-
-  const readFromStorage = useCallback((k: string | null): T => {
-    if (!k) return defaultValueRef.current
-    try {
-      const stored = localStorage.getItem(k)
-      if (stored !== null) {
-        return JSON.parse(stored) as T
-      }
-    } catch (e) {
-      // localStorage 不可用或 JSON 解析失败，使用默认值
-      console.warn("[usePersistedState] 读取 localStorage 失败:", e)
-    }
-    return defaultValueRef.current
-  }, [])
-
-  const [state, setState] = useState<T>(() => readFromStorage(storageKey))
-
-  // key 变化时（如切换模板/草稿），从新 key 重新读取，避免状态与存储不同步
-  useEffect(() => {
-    setState(readFromStorage(storageKey))
-  }, [storageKey, readFromStorage])
-
-  const setPersistedState = useCallback(
-    (value: T | ((prev: T) => T)) => {
-      setState((prev) => {
-        const nextValue = typeof value === "function" ? (value as (prev: T) => T)(prev) : value
-        if (storageKey) {
-          try {
-            if (nextValue === null || nextValue === undefined || nextValue === "") {
-              localStorage.removeItem(storageKey)
-            } else {
-              localStorage.setItem(storageKey, JSON.stringify(nextValue))
-            }
-          } catch (e) {
-            // localStorage 写入失败（存储空间满/隐私模式），静默忽略
-            console.warn("[usePersistedState] 写入 localStorage 失败:", e)
-          }
-        }
-        return nextValue
-      })
-    },
-    [storageKey],
-  )
-
-  return [state, setPersistedState]
-}
@@ -1,114 +0,0 @@
-/**
- * 预览素材加载 Hook
- * 根据选中的素材 ID 列表，逐个获取素材详情（含 file_url、duration 等）
- * 供前端预览播放器使用
- *
- * 注意：后端没有批量接口（/assets/batch 返回 405），
- * 因此直接使用 Promise.allSettled 并发请求单个 GET /assets/{id}
- */
-import { useState, useEffect, useCallback, useRef } from "react"
-import type { AssetItem } from "@/api/assets"
-import type { AxiosResponse } from "axios"
-
-/**
- * 通过 ID 列表逐个获取素材（并发）
- * 使用 Promise.allSettled 确保单个失败不影响整体
- */
-async function fetchAssetsByIds(ids: string[]): Promise<AssetItem[]> {
-  if (!ids.length) return []
-
-  try {
-    const { default: apiClient } = await import("@/api/client")
-    const results = await Promise.allSettled(
-      ids.map((id) => apiClient.get<AssetItem>(`/assets/${id}`)),
-    )
-    return results
-      .filter(
-        (r): r is PromiseFulfilledResult<AxiosResponse<AssetItem>> =>
-          r.status === "fulfilled" && !!r.value?.data,
-      )
-      .map((r) => r.value.data)
-  } catch {
-    return []
-  }
-}
-
-interface UsePreviewAssetsReturn {
-  /** 加载后的素材列表 */
-  assets: AssetItem[]
-  /** 是否正在加载 */
-  loading: boolean
-  /** 是否已就绪（加载完成） */
-  ready: boolean
-  /** 手动触发重新加载 */
-  reload: () => void
-}
-
-/**
- * usePreviewAssets — 加载选中素材的视频文件信息
- */
-export function usePreviewAssets(assetIds: string[], enabled: boolean): UsePreviewAssetsReturn {
-  const [assets, setAssets] = useState<AssetItem[]>([])
-  const [loading, setLoading] = useState(false)
-  const [ready, setReady] = useState(false)
-  const requestIdRef = useRef(0)
-
-  // 稳定化 assetIds：只有内容真正变化时才更新引用
-  const stableAssetIds = useStableArray(assetIds)
-
-  const load = useCallback(async () => {
-    if (!stableAssetIds.length || !enabled) {
-      setAssets([])
-      setReady(false)
-      return
-    }
-
-    const thisRequestId = ++requestIdRef.current
-    setLoading(true)
-    setReady(false)
-
-    try {
-      const result = await fetchAssetsByIds(stableAssetIds)
-      // 防止竞态：只保留最新请求的结果
-      if (requestIdRef.current === thisRequestId) {
-        setAssets(result)
-        setReady(result.length > 0)
-      }
-    } catch {
-      if (requestIdRef.current === thisRequestId) {
-        setAssets([])
-        setReady(false)
-      }
-    } finally {
-      if (requestIdRef.current === thisRequestId) {
-        setLoading(false)
-      }
-    }
-  }, [stableAssetIds, enabled])
-
-  useEffect(() => {
-    load()
-  }, [load])
-
-  return { assets, loading, ready, reload: load }
-}
-
-/**
- * useStableArray — 数组内容稳定化 Hook
- * 只有数组内容真正变化时才返回新的引用，避免父组件 re-render 导致的无效更新
- */
-function useStableArray<T>(array: T[]): T[] {
-  const ref = useRef<T[]>(array)
-
-  // 比较数组内容是否真正变化
-  const hasChanged =
-    array.length !== ref.current.length || array.some((item, index) => item !== ref.current[index])
-
-  if (hasChanged) {
-    ref.current = array
-  }
-
-  return ref.current
-}
-
-export default usePreviewAssets
@@ -1,365 +0,0 @@
-/**
- * 素材片段调度器 Hook（多 video 元素方案 v3）
- *
- * v3 修复：
- * - 所有动态状态存入 ref，tick 为稳定函数，彻底消除 RAF 闭包陷阱
- * - 片段切换时先启动下一个 video 再切可见性，消除冻屏间隔
- * - 进度更新 200ms 节流
- */
-
-import { useState, useRef, useCallback, useEffect, useMemo } from "react"
-
-export interface PlaybackSegment {
-  assetId: string
-  videoUrl: string
-  startTime: number
-  endTime: number
-  order: number
-}
-
-export interface SegmentSchedulerState {
-  isPlaying: boolean
-  currentTime: number
-  totalDuration: number
-  currentSegmentIndex: number
-  segmentLocalTime: number
-  isEnded: boolean
-  canPlay: boolean
-  play: () => void
-  pause: () => void
-  togglePlayPause: () => void
-  seekTo: (time: number) => void
-  videoRefs: React.MutableRefObject<(HTMLVideoElement | null)[]>
-}
-
-function findSegmentAtTime(
-  segments: PlaybackSegment[],
-  globalTime: number,
-): { index: number; localTime: number } {
-  let accumulated = 0
-  for (let i = 0; i < segments.length; i++) {
-    const seg = segments[i]
-    const segDuration = seg.endTime - seg.startTime
-    if (globalTime < accumulated + segDuration || i === segments.length - 1) {
-      return { index: i, localTime: seg.startTime + (globalTime - accumulated) }
-    }
-    accumulated += segDuration
-  }
-  return { index: segments.length - 1, localTime: segments[segments.length - 1].endTime }
-}
-
-function buildTimeline(segments: PlaybackSegment[]): number[] {
-  const starts: number[] = []
-  let acc = 0
-  for (const seg of segments) {
-    starts.push(acc)
-    acc += seg.endTime - seg.startTime
-  }
-  return starts
-}
-
-export function useSegmentScheduler(segments: PlaybackSegment[]): SegmentSchedulerState {
-  const videoRefs = useRef<(HTMLVideoElement | null)[]>([])
-  const [isPlaying, setIsPlaying] = useState(false)
-  const [currentTime, setCurrentTime] = useState(0)
-  const [currentSegmentIndex, setCurrentSegmentIndex] = useState(0)
-  const [isEnded, setIsEnded] = useState(false)
-  const rafRef = useRef(0)
-  const isSeekingRef = useRef(false)
-  const lastTimeUpdateRef = useRef(0)
-
-  // 所有动态值存入 ref，tick 始终读取最新值，不依赖闭包
-  const segIdxRef = useRef(0)
-  const segmentsRef = useRef(segments)
-  const timelineStartsData = useMemo(() => buildTimeline(segments), [segments])
-  const totalDurationData = useMemo(
-    () => segments.reduce((sum, seg) => sum + (seg.endTime - seg.startTime), 0),
-    [segments],
-  )
-  const timelineStartsRef = useRef(timelineStartsData)
-  const totalDurationRef = useRef(totalDurationData)
-  const isPlayingRef = useRef(false)
-
-  segmentsRef.current = segments
-  timelineStartsRef.current = timelineStartsData
-  totalDurationRef.current = totalDurationData
-
-  const canPlay = segments.length > 0
-
-  useEffect(() => {
-    segIdxRef.current = currentSegmentIndex
-  }, [currentSegmentIndex])
-
-  useEffect(() => {
-    isPlayingRef.current = isPlaying
-  }, [isPlaying])
-
-  const waitForReady = useCallback((video: HTMLVideoElement, timeout = 3000): Promise<void> => {
-    if (video.readyState >= 3) return Promise.resolve()
-    return new Promise((resolve) => {
-      const onCanPlay = () => {
-        video.removeEventListener("canplay", onCanPlay)
-        clearTimeout(timer)
-        resolve()
-      }
-      const timer = setTimeout(() => {
-        video.removeEventListener("canplay", onCanPlay)
-        resolve()
-      }, timeout)
-      video.addEventListener("canplay", onCanPlay)
-    })
-  }, [])
-
-  const switchToSegment = useCallback(
-    async (index: number, seekToLocalTime?: number) => {
-      const segs = segmentsRef.current
-      const video = videoRefs.current[index]
-      if (!video || index >= segs.length) return
-
-      const seg = segs[index]
-      const localTime = seekToLocalTime ?? seg.startTime
-      const oldIdx = segIdxRef.current
-      const oldVideo = videoRefs.current[oldIdx]
-
-      if (oldVideo && oldVideo !== video) oldVideo.pause()
-
-      if (!video.src && seg.videoUrl) {
-        video.src = seg.videoUrl
-        video.load()
-      }
-
-      if (Math.abs(video.currentTime - localTime) > 0.05) {
-        video.currentTime = localTime
-      }
-
-      segIdxRef.current = index
-      setCurrentSegmentIndex(index)
-
-      await waitForReady(video)
-    },
-    [waitForReady],
-  )
-
-  // 稳定的 tick 函数，空依赖，所有值从 ref 读取
-  const tick = useCallback(() => {
-    const segs = segmentsRef.current
-    const idx = segIdxRef.current
-    const video = videoRefs.current[idx]
-
-    if (!video || isSeekingRef.current) {
-      rafRef.current = requestAnimationFrame(tick)
-      return
-    }
-
-    const seg = segs[idx]
-    if (!seg) return
-
-    // 预加载下一个片段
-    const nextIndex = idx + 1
-    if (nextIndex < segs.length) {
-      const nextVideo = videoRefs.current[nextIndex]
-      if (nextVideo) {
-        const timeToEnd = seg.endTime - video.currentTime
-        if (timeToEnd <= 2 && nextVideo.readyState < 3) {
-          const nextSeg = segs[nextIndex]
-          if (Math.abs(nextVideo.currentTime - nextSeg.startTime) > 0.5) {
-            nextVideo.currentTime = nextSeg.startTime
-          }
-        }
-      }
-    }
-
-    // 检测片段边界
-    if (video.currentTime >= seg.endTime - 0.1) {
-      if (nextIndex < segs.length) {
-        const nextVideo = videoRefs.current[nextIndex]
-        const nextSeg = segs[nextIndex]
-        const accumulatedTime =
-          (timelineStartsRef.current[idx] || 0) + (seg.endTime - seg.startTime)
-
-        if (nextVideo) {
-          if (Math.abs(nextVideo.currentTime - nextSeg.startTime) > 0.1) {
-            nextVideo.currentTime = nextSeg.startTime
-          }
-          // 先启动下一个视频（muted，可安全同时播放）
-          nextVideo
-            .play()
-            .catch((e) => console.warn("[useSegmentScheduler] next segment play failed:", e))
-        }
-
-        // 立即切换可见性
-        segIdxRef.current = nextIndex
-        setCurrentSegmentIndex(nextIndex)
-        setCurrentTime(accumulatedTime)
-        lastTimeUpdateRef.current = 0
-        setIsPlaying(true)
-
-        // 下一帧暂停旧视频（让新视频先渲染，避免冻屏）
-        const oldVideo = video
-        requestAnimationFrame(() => {
-          oldVideo.pause()
-        })
-
-        rafRef.current = requestAnimationFrame(tick)
-        return
-      } else {
-        video.pause()
-        setIsPlaying(false)
-        setIsEnded(true)
-        setCurrentTime(totalDurationRef.current)
-        return
-      }
-    }
-
-    const globalTime = (timelineStartsRef.current[idx] || 0) + (video.currentTime - seg.startTime)
-    const now = performance.now()
-    if (now - lastTimeUpdateRef.current >= 200) {
-      lastTimeUpdateRef.current = now
-      setCurrentTime(Math.max(0, Math.min(globalTime, totalDurationRef.current)))
-    }
-
-    rafRef.current = requestAnimationFrame(tick)
-  }, [])
-
-  const play = useCallback(async () => {
-    if (!canPlay) return
-    setIsEnded(false)
-    const idx = segIdxRef.current
-    const video = videoRefs.current[idx]
-    if (!video) return
-
-    if (idx === 0 && video.readyState < 2) {
-      if (!video.src && segmentsRef.current[0]?.videoUrl) {
-        video.src = segmentsRef.current[0].videoUrl
-        video.load()
-      }
-      await waitForReady(video)
-    }
-
-    try {
-      await video.play()
-      setIsPlaying(true)
-      cancelAnimationFrame(rafRef.current)
-      rafRef.current = requestAnimationFrame(tick)
-    } catch (err) {
-      console.warn("[useSegmentScheduler] 播放失败:", err)
-    }
-  }, [canPlay, waitForReady, tick])
-
-  const pause = useCallback(() => {
-    const video = videoRefs.current[segIdxRef.current]
-    if (video) video.pause()
-    setIsPlaying(false)
-    cancelAnimationFrame(rafRef.current)
-  }, [])
-
-  const togglePlayPause = useCallback(() => {
-    if (isPlayingRef.current) {
-      pause()
-    } else {
-      if (isEnded) {
-        setIsEnded(false)
-        lastTimeUpdateRef.current = 0
-        const firstVideo = videoRefs.current[0]
-        if (firstVideo) {
-          videoRefs.current.forEach((v, i) => {
-            if (v && i !== 0) v.pause()
-          })
-          firstVideo.currentTime = segmentsRef.current[0]?.startTime || 0
-          segIdxRef.current = 0
-          setCurrentSegmentIndex(0)
-          setCurrentTime(0)
-          firstVideo
-            .play()
-            .then(() => {
-              setIsPlaying(true)
-              cancelAnimationFrame(rafRef.current)
-              rafRef.current = requestAnimationFrame(tick)
-            })
-            .catch((e) => console.warn("[useSegmentScheduler] restart failed:", e))
-        }
-      } else {
-        play()
-      }
-    }
-  }, [isEnded, pause, play, tick])
-
-  const seekTo = useCallback(
-    async (time: number) => {
-      if (!canPlay) return
-      const clampedTime = Math.max(0, Math.min(time, totalDurationRef.current))
-      const { index, localTime } = findSegmentAtTime(segmentsRef.current, clampedTime)
-
-      isSeekingRef.current = true
-      cancelAnimationFrame(rafRef.current)
-
-      if (index !== segIdxRef.current) {
-        await switchToSegment(index, localTime)
-      } else {
-        const video = videoRefs.current[index]
-        if (video) video.currentTime = localTime
-      }
-
-      setCurrentTime(clampedTime)
-      setIsEnded(false)
-      lastTimeUpdateRef.current = 0
-
-      if (isPlayingRef.current) {
-        const video = videoRefs.current[index]
-        if (video) {
-          video.play().catch(() => {})
-        }
-        rafRef.current = requestAnimationFrame(tick)
-      }
-
-      setTimeout(() => {
-        isSeekingRef.current = false
-      }, 200)
-    },
-    [canPlay, switchToSegment, tick],
-  )
-
-  useEffect(() => {
-    videoRefs.current = videoRefs.current.slice(0, segments.length)
-    while (videoRefs.current.length < segments.length) {
-      videoRefs.current.push(null)
-    }
-  }, [segments])
-
-  useEffect(() => {
-    return () => {
-      cancelAnimationFrame(rafRef.current)
-    }
-  }, [])
-
-  useEffect(() => {
-    cancelAnimationFrame(rafRef.current)
-    segIdxRef.current = 0
-    setIsPlaying(false)
-    setCurrentTime(0)
-    setCurrentSegmentIndex(0)
-    setIsEnded(false)
-  }, [segments])
-
-  const currentSegment = segments[currentSegmentIndex] || null
-  const segmentLocalTime = currentSegment
-    ? currentTime - (timelineStartsRef.current[currentSegmentIndex] || 0) + currentSegment.startTime
-    : 0
-
-  return {
-    isPlaying,
-    currentTime,
-    totalDuration: totalDurationData,
-    currentSegmentIndex,
-    segmentLocalTime,
-    isEnded,
-    canPlay,
-    play,
-    pause,
-    togglePlayPause,
-    seekTo,
-    videoRefs,
-  }
-}
-
-export default useSegmentScheduler
@@ -1,294 +0,0 @@
-/**
- * 服务器渲染预览 Hook
- *
- * 核心职责：
- * 1. 调用 POST /generation/preview 创建服务器预览渲染任务
- * 2. 轮询 GET /generation/preview/{task_id} 直到完成
- * 3. 返回服务器渲染的真实视频 URL（供 <video> 标签播放）
- * 4. 检测配置变更，标记预览失效（stale）或自动重新渲染
- * 5. 网络错误自动重试 2 次
- *
- * 状态机：
- *   idle → loading → ready → stale (config changed)
- *                   ↘ failed → idle (retry)
- */
-import { useState, useCallback, useRef, useEffect } from "react"
-import { createPreview, getPreviewStatus } from "@/api/generation/preview"
-import type { CreatePreviewRequest } from "@/api/generation/types"
-
-export type ServerPreviewStatus = "idle" | "loading" | "ready" | "stale" | "failed"
-
-interface UseServerPreviewOptions {
-  /** 是否启用预览（Step4+ 且有素材和模板时） */
-  enabled: boolean
-  /** 构建预览请求参数（每次 render 调用，获取最新配置） */
-  buildRequest: () => CreatePreviewRequest
-  /** 预览任务创建成功回调 */
-  onPreviewTaskCreated?: (taskId: string, sourceEditPlanId?: string) => void
-}
-
-interface UseServerPreviewReturn {
-  status: ServerPreviewStatus
-  videoUrl: string | null
-  error: string | null
-  /** 进度 0-100 */
-  progress: number
-  /** 手动触发预览创建（"重新预览"按钮或标题变更后手动刷新） */
-  triggerPreview: () => void
-  /** 当前预览任务 ID */
-  taskId: string | null
-}
-
-const POLL_INTERVAL = 2000
-const POLL_TIMEOUT = 120_000
-const MAX_NETWORK_RETRIES = 2
-
-/**
- * 对配置参数做指纹，用于检测配置是否变化
- */
-function buildFingerprint(req: CreatePreviewRequest): string {
-  return JSON.stringify({
-    t: req.template_id,
-    a: [...req.asset_ids].sort(),
-    d: req.duration,
-    r: req.video_ratio,
-    v: req.voice_library_id,
-    b: req.bgm_config,
-    title: req.title_config,
-  })
-}
-
-export function useServerPreview({
-  enabled,
-  buildRequest,
-  onPreviewTaskCreated,
-}: UseServerPreviewOptions): UseServerPreviewReturn {
-  const [status, setStatus] = useState<ServerPreviewStatus>("idle")
-  const [videoUrl, setVideoUrl] = useState<string | null>(null)
-  const [error, setError] = useState<string | null>(null)
-  const [progress, setProgress] = useState(0)
-  const [taskId, setTaskId] = useState<string | null>(null)
-
-  const pollTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
-  const timeoutTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
-  const requestSeqRef = useRef(0)
-  const renderedFingerprintRef = useRef<string>("")
-  const mountedRef = useRef(true)
-  const networkRetriesRef = useRef(0)
-
-  // 始终持有最新的 buildRequest 和回调
-  const buildRequestRef = useRef(buildRequest)
-  buildRequestRef.current = buildRequest
-  const onCreatedRef = useRef(onPreviewTaskCreated)
-  onCreatedRef.current = onPreviewTaskCreated
-
-  /* ── 清理 ── */
-  const clearTimers = useCallback(() => {
-    if (pollTimerRef.current) {
-      clearTimeout(pollTimerRef.current)
-      pollTimerRef.current = null
-    }
-    if (timeoutTimerRef.current) {
-      clearTimeout(timeoutTimerRef.current)
-      timeoutTimerRef.current = null
-    }
-  }, [])
-
-  useEffect(() => {
-    mountedRef.current = true
-    return () => {
-      mountedRef.current = false
-      clearTimers()
-    }
-  }, [clearTimers])
-
-  /* ── 创建预览 + 轮询 ── */
-  const createAndPoll = useCallback(
-    async (request: CreatePreviewRequest, seq: number) => {
-      setStatus("loading")
-      setProgress(0)
-      setError(null)
-      networkRetriesRef.current = 0
-
-      try {
-        const resp = await createPreview(request)
-        if (seq !== requestSeqRef.current || !mountedRef.current) return
-
-        setTaskId(resp.task_id)
-        onCreatedRef.current?.(resp.task_id, resp.source_edit_plan_id)
-
-        let completed = false
-
-        // 超时保护
-        timeoutTimerRef.current = setTimeout(() => {
-          if (completed || seq !== requestSeqRef.current || !mountedRef.current) return
-          completed = true
-          clearTimers()
-          setStatus("failed")
-          setError("预览渲染超时（120秒），请重试")
-        }, POLL_TIMEOUT)
-
-        const poll = async () => {
-          if (completed || seq !== requestSeqRef.current || !mountedRef.current) return
-
-          try {
-            const st = await getPreviewStatus(resp.task_id)
-            if (completed || seq !== requestSeqRef.current || !mountedRef.current) return
-
-            if (st.status === "completed" && st.video_url) {
-              completed = true
-              clearTimers()
-              renderedFingerprintRef.current = buildFingerprint(request)
-              setVideoUrl(st.video_url)
-              setProgress(100)
-              setStatus("ready")
-              setError(null)
-              return
-            }
-
-            if (st.status === "failed" || st.status === "cancelled") {
-              completed = true
-              clearTimers()
-              setStatus("failed")
-              setError(
-                st.status === "cancelled"
-                  ? "预览任务已取消"
-                  : st.error_message || "预览渲染失败，请重试",
-              )
-              return
-            }
-
-            // pending / generating
-            if (typeof st.progress === "number") setProgress(st.progress)
-            pollTimerRef.current = setTimeout(poll, POLL_INTERVAL)
-          } catch (pollErr) {
-            if (completed || seq !== requestSeqRef.current || !mountedRef.current) return
-            if (networkRetriesRef.current < MAX_NETWORK_RETRIES) {
-              networkRetriesRef.current += 1
-              console.warn(
-                `[ServerPreview] 轮询网络错误，第 ${networkRetriesRef.current} 次重试`,
-                pollErr,
-              )
-              pollTimerRef.current = setTimeout(poll, POLL_INTERVAL * 2)
-            } else {
-              completed = true
-              clearTimers()
-              setStatus("failed")
-              setError("网络错误，无法获取预览状态，请重试")
-            }
-          }
-        }
-
-        poll()
-      } catch (createErr) {
-        if (seq !== requestSeqRef.current || !mountedRef.current) return
-        console.error("[ServerPreview] 创建预览任务失败:", createErr)
-
-        const isNetworkError =
-          !!(createErr as { request?: unknown })?.request ||
-          (createErr as { code?: string })?.code === "ERR_NETWORK"
-
-        if (isNetworkError && networkRetriesRef.current < MAX_NETWORK_RETRIES) {
-          networkRetriesRef.current += 1
-          console.warn(`[ServerPreview] 创建任务网络错误，第 ${networkRetriesRef.current} 次重试`)
-          setTimeout(() => {
-            if (seq === requestSeqRef.current && mountedRef.current) {
-              createAndPoll(request, seq)
-            }
-          }, POLL_INTERVAL * 2)
-          return
-        }
-
-        const errData = (
-          createErr as { response?: { data?: { detail?: string; message?: string } } }
-        )?.response?.data
-        setStatus("failed")
-        setError(errData?.detail || errData?.message || "预览任务创建失败，请重试")
-      }
-    },
-    [clearTimers],
-  )
-
-  /* ── 手动触发预览 ── */
-  const triggerPreview = useCallback(() => {
-    if (!enabled) return
-    const request = buildRequestRef.current()
-    if (!request.template_id || request.asset_ids.length === 0) return
-
-    clearTimers()
-    const seq = ++requestSeqRef.current
-    setVideoUrl(null)
-    setTaskId(null)
-    createAndPoll(request, seq)
-  }, [enabled, clearTimers, createAndPoll])
-
-  /* ── 自动触发 + 配置变更检测 ── */
-  // 每次 render 都检查最新配置 fingerprint，与已渲染的 fingerprint 比较
-  const request = enabled ? buildRequest() : null
-  const currentFingerprint = request
-    ? request.template_id && request.asset_ids.length > 0
-      ? buildFingerprint(request)
-      : ""
-    : ""
-
-  // 首次进入自动触发
-  const didInitRef = useRef(false)
-  useEffect(() => {
-    if (!enabled || !currentFingerprint) {
-      didInitRef.current = false
-      // 禁用时取消进行中的轮询，避免回到前序步骤后仍在后台轮询
-      requestSeqRef.current += 1
-      clearTimers()
-      return
-    }
-    if (!didInitRef.current) {
-      didInitRef.current = true
-      renderedFingerprintRef.current = currentFingerprint
-      triggerPreview()
-    }
-  }, [enabled, currentFingerprint, triggerPreview, clearTimers])
-
-  // 配置变更检测：素材/配音/BGM 等变化 → 自动重渲染；标题样式变化 → 标记 stale
-  const prevFingerprintRef = useRef(currentFingerprint)
-  useEffect(() => {
-    if (!enabled || !currentFingerprint) return
-    const prev = prevFingerprintRef.current
-    prevFingerprintRef.current = currentFingerprint
-
-    if (!prev || prev === currentFingerprint) return
-    if (currentFingerprint === renderedFingerprintRef.current) return
-
-    // 配置已变更
-    // 判断是标题样式变更还是素材/配音/BGM 变更
-    const prevParsed = JSON.parse(prev) as Record<string, unknown>
-    const currParsed = JSON.parse(currentFingerprint) as Record<string, unknown>
-    const nonTitleChanged =
-      prevParsed.t !== currParsed.t ||
-      prevParsed.a !== currParsed.a ||
-      prevParsed.d !== currParsed.d ||
-      prevParsed.r !== currParsed.r ||
-      prevParsed.v !== currParsed.v ||
-      JSON.stringify(prevParsed.b) !== JSON.stringify(currParsed.b)
-
-    if (nonTitleChanged) {
-      // 素材/配音/BGM/模板等变化 → 自动重新渲染
-      renderedFingerprintRef.current = currentFingerprint
-      triggerPreview()
-    } else {
-      // 仅标题文字/样式变化 → 标记 stale，不自动重渲染（避免频繁请求）
-      // 实时预览由 CSS TitleOverlay 提供
-      setStatus((s) => (s === "ready" ? "stale" : s))
-    }
-  }, [enabled, currentFingerprint, triggerPreview])
-
-  return {
-    status,
-    videoUrl,
-    error,
-    progress,
-    triggerPreview,
-    taskId,
-  }
-}
-
-export default useServerPreview
@@ -3,14 +3,9 @@
 * 组合素材库加载 + 智能匹配两个子 Hook
 */
 import { useCallback, useEffect, useRef } from "react"
-import type { AssetItem } from "@/api/assets"
-import type { TemplateSegment } from "@/api/templates/types"
-import { updateEditPlanClips } from "@/api/template-editor"
 import { formatDuration } from "../utils/formatDuration"
-import { buildClipsFromAssets } from "../utils/buildClipsFromAssets"
 import { useMaterialLibrary } from "./step2-materials/useMaterialLibrary"
 import { useSmartMatch } from "./step2-materials/useSmartMatch"
-import { useDraftAutoSave } from "./useDraftAutoSave"

 interface UseStep2MaterialsProps {
  materialMode: "manual" | "auto"
@@ -19,10 +14,6 @@ interface UseStep2MaterialsProps {
  onSelectedMaterialsChange: (ids: string[]) => void
  smartSelectedIds: string[]
  onSmartSelectedIdsChange: (ids: string[]) => void
-  /** 当前选中的模板/草稿 ID，用于自动保存 */
-  selectedTemplate?: string
-  /** 当前模板的 segments（用于构建 clips duration） */
-  templateSegments?: TemplateSegment[]
 }

 export function useStep2Materials({
@@ -32,8 +23,6 @@ export function useStep2Materials({
  onSelectedMaterialsChange,
  smartSelectedIds,
  onSmartSelectedIdsChange,
-  selectedTemplate,
-  templateSegments,
 }: UseStep2MaterialsProps) {
  const { libraries, selectedLibraryId, setSelectedLibraryId, materials, materialsLoading } =
    useMaterialLibrary()
@@ -64,69 +53,6 @@ export function useStep2Materials({
    handleSmartMatch()
  }, [selectedLibraryId, materialMode, materialsLoading, materials.items, handleSmartMatch])

-  /* ── Step2 选择素材后自动保存草稿 asset_ids（防抖 500ms，失败静默） ── */
-  const { scheduleSave } = useDraftAutoSave(selectedTemplate)
-  useEffect(() => {
-    if (!selectedTemplate) return
-    const ids = materialMode === "auto" ? smartSelectedIds : selectedMaterials
-    scheduleSave({ asset_ids: ids }, 500)
-  }, [selectedTemplate, materialMode, selectedMaterials, smartSelectedIds, scheduleSave])
-
-  /* ── Step2 选择素材后同步写入 edit_plan_clips（防抖 800ms，失败静默） ── */
-  const clipsTimerRef = useRef<ReturnType<typeof setTimeout>>()
-  const clipsAbortRef = useRef<AbortController | null>(null)
-  const templateSegmentsRef = useRef(templateSegments)
-  templateSegmentsRef.current = templateSegments
-  const selectedTemplateRef = useRef(selectedTemplate)
-  selectedTemplateRef.current = selectedTemplate
-  const materialsRef = useRef(materials)
-  materialsRef.current = materials
-  const smartMatchedRef = useRef<AssetItem[]>(smartMatch.smartMatchedResults)
-  smartMatchedRef.current = smartMatch.smartMatchedResults
-
-  useEffect(() => {
-    const tid = selectedTemplateRef.current
-    if (!tid) return
-    const ids = materialMode === "auto" ? smartSelectedIds : selectedMaterials
-    if (!ids.length) return
-
-    if (clipsTimerRef.current) clearTimeout(clipsTimerRef.current)
-    clipsTimerRef.current = setTimeout(async () => {
-      // 取消上一次未完成的请求
-      if (clipsAbortRef.current) clipsAbortRef.current.abort()
-      const controller = new AbortController()
-      clipsAbortRef.current = controller
-
-      const clips = buildClipsFromAssets({
-        selectedIds: ids,
-        materials: materialsRef.current.items,
-        smartMatchedAssets: smartMatchedRef.current,
-        templateSegments: templateSegmentsRef.current || [],
-      })
-
-      try {
-        await updateEditPlanClips(tid, clips, controller.signal)
-      } catch (err) {
-        const name = (err as { name?: string })?.name
-        if (name !== "CanceledError" && name !== "AbortError") {
-          console.warn("[useStep2Materials] 写入 clips 失败:", err)
-        }
-      }
-    }, 800)
-
-    return () => {
-      if (clipsTimerRef.current) clearTimeout(clipsTimerRef.current)
-    }
-  }, [selectedTemplate, materialMode, selectedMaterials, smartSelectedIds, templateSegments])
-
-  // 组件卸载时取消未完成请求
-  useEffect(() => {
-    return () => {
-      if (clipsTimerRef.current) clearTimeout(clipsTimerRef.current)
-      if (clipsAbortRef.current) clipsAbortRef.current.abort()
-    }
-  }, [])
-
  /* ── 手动选择素材 ── */
  const handleToggleMaterial = useCallback(
    (materialId: string) => {
@@ -0,0 +1,453 @@
+/**
+ * Step 4 生成预览 Hook（支持多预览 + voice_ids）
+ * 调用 /generation/preview 接口创建多个预览任务，轮询状态直到全部完成
+ */
+import { useState, useCallback, useMemo, useEffect, useRef } from "react"
+import { createPreview, getPreviewStatus } from "@/api/generation"
+import { updateEditPlan } from "@/api/template-editor/editPlans"
+import type { PreviewTaskResponse, PreviewStatus as ApiPreviewStatus } from "@/api/generation"
+import type { EditingTemplate } from "@/api/editing-planner"
+import { safeExtractError } from "./generate-video/errorUtils"
+
+/** 安全地将值转为字符串，防止对象被直接渲染导致 React Error #31 */
+const safeString = (val: unknown, fallback: string): string => {
+  if (val == null) return fallback
+  const s = safeExtractError(val)
+  return s || fallback
+}
+
+/** 安全地将值转为数字，防止非数字值进入渲染 */
+const safeNumber = (val: unknown, fallback = 0): number => {
+  if (typeof val === "number" && !Number.isNaN(val)) return val
+  if (typeof val === "string") {
+    const n = Number(val)
+    return Number.isNaN(n) ? fallback : n
+  }
+  return fallback
+}
+
+interface UseStep4PreviewProps {
+  templates: EditingTemplate[]
+  selectedTemplate: string
+  materialMode: "manual" | "auto"
+  selectedMaterials: string[]
+  smartSelectedIds: string[]
+  duration: number
+  videoRatio: string
+  /** 配音 voice_ids（传给后端，让预览包含配音音频） */
+  voiceIds?: string[]
+  /** 配音素材库ID（用户选择的上传音频或AI配音素材） */
+  voiceLibraryId?: string
+  /** 要生成的预览数量 */
+  previewCount?: number
+}
+
+export type PreviewStatus = "idle" | "pending" | "generating" | "ready" | "error"
+
+/** 单个预览生成结果 */
+export interface PreviewResult {
+  taskId: string
+  videoUrl: string
+  clipCount: number
+  transitionCount: number
+  materialUsage: number
+  duration: number
+  fileSize: number
+  generateDuration: number
+  progress: number
+}
+
+/** 单个预览项的完整状态（用于多预览） */
+export interface PreviewItem {
+  index: number
+  status: PreviewStatus
+  result: PreviewResult | null
+  error: string
+  progress: number
+}
+
+// 轮询超时时间（10 分钟）
+const POLL_TIMEOUT_MS = 10 * 60 * 1000
+
+/** 初始单项状态 */
+const createInitialItem = (index: number): PreviewItem => ({
+  index,
+  status: "idle",
+  result: null,
+  error: "",
+  progress: 0,
+})
+
+export function useStep4Preview({
+  templates,
+  selectedTemplate,
+  materialMode,
+  selectedMaterials,
+  smartSelectedIds,
+  duration,
+  videoRatio,
+  voiceIds,
+  voiceLibraryId,
+  previewCount = 1,
+}: UseStep4PreviewProps) {
+  const templateName = useMemo(
+    () => templates.find((t) => t.id === selectedTemplate)?.name ?? "未选择",
+    [templates, selectedTemplate],
+  )
+
+  const materialCount = useMemo(() => {
+    if (materialMode === "auto") {
+      return `${smartSelectedIds.length} 个素材（智能匹配）`
+    }
+    return `${selectedMaterials.length} 个素材`
+  }, [materialMode, selectedMaterials.length, smartSelectedIds.length])
+
+  const materialTotal = materialMode === "auto" ? smartSelectedIds.length : selectedMaterials.length
+
+  /* ── 多预览状态 ── */
+  const [items, setItems] = useState<PreviewItem[]>(() =>
+    Array.from({ length: previewCount }, (_, i) => createInitialItem(i)),
+  )
+  const [selectedIndex, setSelectedIndex] = useState(0)
+
+  // 每个任务 ID + 轮询定时器，用于防止竞态条件（按 index 存储）
+  const taskIdsRef = useRef<Map<number, string>>(new Map())
+  const pollTimersRef = useRef<Map<number, ReturnType<typeof setTimeout>>>(new Map())
+  const startTimeRef = useRef<number>(0)
+
+  const clearPollTimer = useCallback((index?: number) => {
+    if (index !== undefined) {
+      const timer = pollTimersRef.current.get(index)
+      if (timer) {
+        clearTimeout(timer)
+        pollTimersRef.current.delete(index)
+      }
+    } else {
+      pollTimersRef.current.forEach((timer) => clearTimeout(timer))
+      pollTimersRef.current.clear()
+    }
+  }, [])
+
+  // 同步 previewCount 变化（增减项）
+  useEffect(() => {
+    setItems((prev) => {
+      if (prev.length === previewCount) return prev
+      if (prev.length > previewCount) return prev.slice(0, previewCount)
+      return [
+        ...prev,
+        ...Array.from({ length: previewCount - prev.length }, (_, i) =>
+          createInitialItem(prev.length + i),
+        ),
+      ]
+    })
+    // 如果 selectedIndex 超出范围，重置
+    setSelectedIndex((prev) => Math.min(prev, previewCount - 1))
+  }, [previewCount])
+
+  /* ── 参数变化时重置所有预览状态 ── */
+  const prevDepsRef = useRef({
+    selectedTemplate,
+    materialMode,
+    selectedMaterials: [...selectedMaterials].sort().join(","),
+    smartSelectedIds: [...smartSelectedIds].sort().join(","),
+    duration,
+    videoRatio,
+    voiceIds: [...(voiceIds || [])].sort().join(","),
+  })
+
+  useEffect(() => {
+    const currentKey = [
+      selectedTemplate,
+      materialMode,
+      [...selectedMaterials].sort().join(","),
+      [...smartSelectedIds].sort().join(","),
+      duration,
+      videoRatio,
+      [...(voiceIds || [])].sort().join(","),
+    ].join("|")
+
+    const prevKey = [
+      prevDepsRef.current.selectedTemplate,
+      prevDepsRef.current.materialMode,
+      prevDepsRef.current.selectedMaterials,
+      prevDepsRef.current.smartSelectedIds,
+      prevDepsRef.current.duration,
+      prevDepsRef.current.videoRatio,
+      prevDepsRef.current.voiceIds,
+    ].join("|")
+
+    if (prevKey !== currentKey && items.some((it) => it.status !== "idle")) {
+      taskIdsRef.current.clear()
+      clearPollTimer()
+      setItems(Array.from({ length: previewCount }, (_, i) => createInitialItem(i)))
+      setSelectedIndex(0)
+    }
+
+    prevDepsRef.current = {
+      selectedTemplate,
+      materialMode,
+      selectedMaterials: [...selectedMaterials].sort().join(","),
+      smartSelectedIds: [...smartSelectedIds].sort().join(","),
+      duration,
+      videoRatio,
+      voiceIds: [...(voiceIds || [])].sort().join(","),
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [
+    selectedTemplate,
+    materialMode,
+    selectedMaterials,
+    smartSelectedIds,
+    duration,
+    videoRatio,
+    voiceIds,
+    previewCount,
+  ])
+
+  // 组件卸载时清理所有轮询
+  useEffect(() => {
+    return () => {
+      clearPollTimer()
+    }
+  }, [clearPollTimer])
+
+  /** 轮询单个预览任务状态 */
+  const pollPreviewStatus = useCallback(
+    (index: number, taskId: string) => {
+      const poll = async () => {
+        // 竞态检查
+        if (taskIdsRef.current.get(index) !== taskId) return
+
+        // 超时检查
+        if (Date.now() - startTimeRef.current > POLL_TIMEOUT_MS) {
+          setItems((prev) =>
+            prev.map((it) =>
+              it.index === index ? { ...it, status: "error", error: "预览生成超时，请重试" } : it,
+            ),
+          )
+          return
+        }
+
+        try {
+          const data: PreviewTaskResponse = await getPreviewStatus(taskId)
+
+          if (taskIdsRef.current.get(index) !== taskId) return
+
+          const status = data.status as ApiPreviewStatus
+
+          if (status === "completed") {
+            const result: PreviewResult = {
+              taskId: safeString(data.task_id, ""),
+              videoUrl: safeString(data.video_url, ""),
+              clipCount: safeNumber(data.clip_count),
+              transitionCount: safeNumber(data.transition_count),
+              materialUsage: safeNumber(data.material_usage),
+              duration: safeNumber(data.duration),
+              fileSize: safeNumber(data.file_size),
+              generateDuration: safeNumber(data.generate_duration),
+              progress: 100,
+            }
+            setItems((prev) =>
+              prev.map((it) =>
+                it.index === index ? { ...it, status: "ready", result, progress: 100 } : it,
+              ),
+            )
+
+            // 保存预览视频 URL 到 plan config，供封面生成使用
+            if (result.videoUrl && selectedTemplate) {
+              updateEditPlan(selectedTemplate, {
+                config: { rendered_storage_key: result.videoUrl },
+              }).catch((err) => {
+                console.warn("[Step4] 保存预览视频URL到plan config失败:", err)
+              })
+            }
+            return
+          }
+
+          if (status === "failed") {
+            setItems((prev) =>
+              prev.map((it) =>
+                it.index === index
+                  ? {
+                      ...it,
+                      status: "error",
+                      error: safeString(data.error_message, "预览生成失败，请重试"),
+                    }
+                  : it,
+              ),
+            )
+            return
+          }
+
+          if (status === "cancelled") {
+            setItems((prev) =>
+              prev.map((it) =>
+                it.index === index ? { ...it, status: "error", error: "预览任务已取消" } : it,
+              ),
+            )
+            return
+          }
+
+          // pending / generating 状态继续轮询
+          const prog = safeNumber(data.progress)
+          const nextStatus: PreviewStatus = status === "pending" ? "pending" : "generating"
+          setItems((prev) =>
+            prev.map((it) =>
+              it.index === index ? { ...it, status: nextStatus, progress: prog } : it,
+            ),
+          )
+          const delay = status === "pending" ? 5000 : 2000
+          pollTimersRef.current.set(index, setTimeout(poll, delay))
+        } catch {
+          if (taskIdsRef.current.get(index) !== taskId) return
+          pollTimersRef.current.set(index, setTimeout(poll, 3000))
+        }
+      }
+
+      pollTimersRef.current.set(index, setTimeout(poll, 1000))
+    },
+    [selectedTemplate],
+  )
+
+  /** 生成所有预览 */
+  const generatePreview = useCallback(async () => {
+    if (!selectedTemplate) {
+      setItems((prev) => prev.map((it) => ({ ...it, status: "error", error: "请先选择模板" })))
+      return
+    }
+    if (materialTotal === 0) {
+      setItems((prev) => prev.map((it) => ({ ...it, status: "error", error: "请先选择素材" })))
+      return
+    }
+
+    // 取消之前的所有轮询
+    clearPollTimer()
+    taskIdsRef.current.clear()
+
+    // 初始化所有项为 pending
+    setItems(
+      Array.from({ length: previewCount }, (_, i) => ({
+        index: i,
+        status: "pending" as PreviewStatus,
+        result: null,
+        error: "",
+        progress: 0,
+      })),
+    )
+    setSelectedIndex(0)
+    startTimeRef.current = Date.now()
+
+    const assetIds = materialMode === "auto" ? smartSelectedIds : selectedMaterials
+
+    // 并发创建所有预览任务（Promise.all 并行请求，减少串行等待）
+    const createTasks = Array.from({ length: previewCount }, async (_, i) => {
+      try {
+        const response = await createPreview({
+          template_id: selectedTemplate,
+          asset_ids: assetIds,
+          duration: duration || undefined,
+          video_ratio: videoRatio,
+          voice_ids: voiceIds && voiceIds.length > 0 ? voiceIds : undefined,
+          voice_library_id: voiceLibraryId || undefined,
+        })
+
+        if (startTimeRef.current === 0) return
+
+        taskIdsRef.current.set(i, response.task_id)
+        pollPreviewStatus(i, response.task_id)
+      } catch (e) {
+        const errMsg = safeString(e instanceof Error ? e.message : e, "预览生成失败")
+        setItems((prev) =>
+          prev.map((it) => (it.index === i ? { ...it, status: "error", error: errMsg } : it)),
+        )
+      }
+    })
+    await Promise.all(createTasks)
+  }, [
+    selectedTemplate,
+    materialTotal,
+    materialMode,
+    smartSelectedIds,
+    selectedMaterials,
+    duration,
+    videoRatio,
+    voiceIds,
+    voiceLibraryId,
+    previewCount,
+    clearPollTimer,
+    pollPreviewStatus,
+  ])
+
+  /** 重新生成所有预览 */
+  const regeneratePreview = useCallback(() => {
+    generatePreview()
+  }, [generatePreview])
+
+  /** 是否所有预览都已完成 */
+  const allReady = items.length > 0 && items.every((it) => it.status === "ready")
+  /** 是否至少有一个预览已完成 */
+  const anyReady = items.some((it) => it.status === "ready")
+  /** 是否有任一正在生成中 */
+  const anyGenerating = items.some((it) => it.status === "pending" || it.status === "generating")
+
+  /** 当前选中的预览结果 */
+  const selectedResult = items[selectedIndex]?.result ?? null
+
+  /** 综合状态（兼容旧逻辑） */
+  const previewStatus: PreviewStatus = useMemo(() => {
+    if (items.every((it) => it.status === "idle")) return "idle"
+    if (items.some((it) => it.status === "pending" || it.status === "generating"))
+      return "generating"
+    if (allReady) return "ready"
+    if (items.every((it) => it.status === "error")) return "error"
+    // 部分完成部分出错
+    if (anyReady) return "ready"
+    return "error"
+  }, [items, allReady, anyReady])
+
+  /** 综合进度（取平均） */
+  const progress = useMemo(() => {
+    if (items.length === 0) return 0
+    return Math.round(items.reduce((sum, it) => sum + it.progress, 0) / items.length)
+  }, [items])
+
+  /** 综合错误信息 */
+  const previewError = useMemo(() => {
+    const errorItems = items.filter((it) => it.status === "error" && it.error)
+    if (errorItems.length === 0) return ""
+    if (errorItems.length === 1) return errorItems[0].error
+    return `${errorItems.length} 个预览生成失败`
+  }, [items])
+
+  const canProceed = anyReady
+
+  /** 当前选中预览的 taskId（用于确认生成时复用预览产物） */
+  const selectedTaskId = selectedResult?.taskId ?? ""
+
+  return {
+    templateName,
+    materialCount,
+    duration,
+    videoRatio,
+    // 多预览状态
+    items,
+    selectedIndex,
+    setSelectedIndex,
+    previewCount,
+    // 综合状态
+    previewStatus,
+    previewResult: selectedResult,
+    previewError,
+    progress,
+    canProceed,
+    allReady,
+    anyReady,
+    anyGenerating,
+    generatePreview,
+    regeneratePreview,
+    // 确认生成复用预览产物
+    selectedTaskId,
+  }
+}
+
+export default useStep4Preview
@@ -4,24 +4,17 @@ import { getTitles } from "@/api/titles"
 import type { TitleSettings } from "../../types"
 import { useAiTitleGenerator } from "./useAiTitleGenerator"
 import { useTitleStyleUpdaters } from "./useTitleStyleUpdaters"
-import { useDraftAutoSave } from "../useDraftAutoSave"

 interface UseStep4TitleProps {
  titleSettings: TitleSettings
  onTitleSettingsChange: (settings: TitleSettings) => void
-  /** 当前选中的模板/草稿 ID，用于自动保存 */
-  selectedTemplate?: string
 }

 /**
 * Step 4 标题设置 Hook
 * 封装 AI 标题生成、标题样式设置等逻辑
 */
-export function useStep4Title({
-  titleSettings,
-  onTitleSettingsChange,
-  selectedTemplate,
-}: UseStep4TitleProps) {
+export function useStep4Title({ titleSettings, onTitleSettingsChange }: UseStep4TitleProps) {
  // 标题库数据
  const { data: userTitles = [] } = useQuery({
    queryKey: ["titles"],
@@ -49,38 +42,6 @@ export function useStep4Title({
  const prevAiAutoSelect = useRef(titleSettings.aiAutoSelect)
  const isFirstMount = useRef(true)

-  /* ── Step4 标题内容/样式变化后自动保存草稿（防抖 800ms，失败静默） ── */
-  const { scheduleSave: scheduleTitleSave } = useDraftAutoSave(selectedTemplate)
-  useEffect(() => {
-    if (!selectedTemplate) return
-    scheduleTitleSave(
-      {
-        title: {
-          text: titleSettings.title,
-          font: titleSettings.font,
-          font_size: titleSettings.size,
-          color: titleSettings.color,
-          position: titleSettings.position,
-          bold: titleSettings.bold,
-          stroke: titleSettings.stroke,
-          shadow: titleSettings.shadow,
-        },
-      },
-      800,
-    )
-  }, [
-    selectedTemplate,
-    titleSettings.title,
-    titleSettings.font,
-    titleSettings.size,
-    titleSettings.color,
-    titleSettings.position,
-    titleSettings.bold,
-    titleSettings.stroke,
-    titleSettings.shadow,
-    scheduleTitleSave,
-  ])
-
  // 当 AI 自动选择开关打开时，自动生成/选择一个标题填入
  // 首次挂载时如果开关已经是 true 且无标题，也需要触发
  useEffect(() => {
@@ -2,13 +2,10 @@
 * Step 6 封面设置 Hook
 * 封装封面设置的交互逻辑，对接后端封面模板 CRUD API
 */
-import { useCallback, useEffect, useRef, useState } from "react"
+import { useCallback, useEffect, useState } from "react"
 import { message } from "antd"
 import type { CoverConfig, CoverTemplate } from "../types/cover"
 import { generateCover } from "@/api/generation"
-import { createPreview, getPreviewStatus } from "@/api/generation/preview"
-import { updateEditPlan } from "@/api/template-editor"
-import type { TitleSettings } from "../types"
 import {
  fetchCoverTemplates,
  createCoverTemplate,
@@ -24,22 +21,6 @@ interface UseStep6CoverProps {
  assetIds?: string[]
  /** 当前选中的模板 ID */
  selectedTemplate?: string
-  /** Step4 标题设置，用于预览视频烧录标题 & 封面叠加标题 */
-  titleSettings?: TitleSettings
-  /** 预览任务创建回调——将 task_id 暴露给父组件供 confirmGeneration 复用 */
-  onPreviewTaskCreated?: (taskId: string) => void
-  /** 从预览响应中提取到 source_edit_plan_id 时的回调 */
-  onSourceEditPlanIdExtracted?: (planId: string) => void
-  /** 配音模式 */
-  voiceMode?: "preset" | "custom" | "clone"
-  /** 选中的配音素材 ID（配音素材库 asset ID） */
-  selectedVoice?: string
-  /** 选中的克隆音色 ID */
-  selectedClonedVoice?: string
-  /** BGM 开关 */
-  bgm?: boolean
-  /** BGM 配置（来自模板） */
-  bgmConfig?: { enabled: boolean; music_id?: string }
 }

 export function useStep6Cover({
@@ -48,18 +29,8 @@ export function useStep6Cover({
  duration,
  assetIds = [],
  selectedTemplate = "",
-  titleSettings,
-  onPreviewTaskCreated,
-  onSourceEditPlanIdExtracted,
-  voiceMode,
-  selectedVoice,
-  selectedClonedVoice,
-  bgm,
-  bgmConfig,
 }: UseStep6CoverProps) {
  const [generating, setGenerating] = useState(false)
-  // 防竞态：记录当前预览生成的参数指纹，任务完成时校验一致性
-  const previewParamsRef = useRef<string>("")

  // ── 封面设置弹窗状态 ──
  const [showCoverSettings, setShowCoverSettings] = useState(false)
@@ -120,20 +91,6 @@ export function useStep6Cover({
      const response = await generateCover(selectedTemplate, {
        asset_ids: assetIds,
        cover_type: "ai_frame",
-        ...(titleSettings?.title
-          ? {
-              title_config: {
-                text: titleSettings.title,
-                font: titleSettings.font,
-                font_size: titleSettings.size,
-                font_color: titleSettings.color,
-                position: titleSettings.position,
-                bold: titleSettings.bold,
-                stroke: titleSettings.stroke,
-                shadow: titleSettings.shadow,
-              },
-            }
-          : {}),
      })
      clearTimeout(timeoutId)
      const thumbnailUrl = response.cover?.image_url || ""
@@ -152,188 +109,31 @@ export function useStep6Cover({
      console.error("[Step6] 智能封面生成失败:", err)

      // 提取详细错误信息
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      const anyErr = err as any
-      const statusCode = anyErr?.response?.status
-
-      // 400 错误：精确判断是否为"预览缺失"，避免误判其他 400 错误
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      const errCode = anyErr?.response?.data?.code as string | undefined
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      const errMsg = (anyErr?.response?.data?.message ||
-        anyErr?.response?.data?.detail ||
-        "") as string
-      const isPreviewMissing =
-        statusCode === 400 &&
-        (errCode?.includes("PREVIEW") ||
-          /预览.*(?:缺失|不存在|未找到)|(?:missing|not found|does not exist).*preview/i.test(
-            errMsg,
-          ))
-
-      if (isPreviewMissing) {
-        console.log("[Step6] 检测到预览缺失，尝试自动创建预览渲染任务...")
-        message.info("正在准备预览视频，请稍候...")
-        try {
-          // 记录当前参数指纹，用于任务完成时校验一致性（防竞态）
-          previewParamsRef.current = JSON.stringify({ selectedTemplate, assetIds, titleSettings })
-          // 解析配音参数：voiceMode=clone 时用 selectedClonedVoice，否则用 selectedVoice
-          const previewVoiceLibraryId =
-            voiceMode === "clone" ? selectedClonedVoice || "" : selectedVoice || ""
-          const previewResp = await createPreview({
-            template_id: selectedTemplate,
-            asset_ids: assetIds,
-            duration: duration || 30,
-            // 配音：voice_library_id 是配音素材库 asset ID（用户上传的音频或 AI 配音）
-            ...(previewVoiceLibraryId ? { voice_library_id: previewVoiceLibraryId } : {}),
-            // BGM 配置：受 bgm 开关控制
-            bgm_config: {
-              enabled: bgm !== false,
-              ...(bgmConfig?.music_id ? { preset_id: bgmConfig.music_id } : {}),
-            },
-            ...(titleSettings?.title
-              ? {
-                  title_config: {
-                    text: titleSettings.title,
-                    font: titleSettings.font,
-                    font_size: titleSettings.size,
-                    font_color: titleSettings.color,
-                    position: titleSettings.position,
-                    bold: titleSettings.bold,
-                    stroke: titleSettings.stroke,
-                    shadow: titleSettings.shadow,
-                  },
-                }
-              : {}),
-          })
-          // 将预览任务 ID 暴露给父组件，供 Step7 确认生成时复用（confirmGeneration）
-          const currentFingerprint = JSON.stringify({ selectedTemplate, assetIds, titleSettings })
-          if (previewResp.task_id && previewParamsRef.current === currentFingerprint) {
-            onPreviewTaskCreated?.(previewResp.task_id)
-            // 提取后端自动关联的 source_edit_plan_id，供 fallback 路径使用
-            if (previewResp.source_edit_plan_id) {
-              onSourceEditPlanIdExtracted?.(previewResp.source_edit_plan_id)
-            }
-          }
-          // 轮询等待预览渲染完成：递归 setTimeout 避免请求重叠 + 120s 超时兜底
-          await new Promise<void>((resolve, reject) => {
-            let finished = false
-            const done = (fn: () => void) => {
-              if (finished) return
-              finished = true
-              clearTimeout(timeoutId)
-              fn()
-            }
-            const timeoutId = setTimeout(() => {
-              done(() => reject(new Error("预览生成超时，请稍后重试")))
-            }, 120_000)
-            const poll = async () => {
-              if (finished) return
-              try {
-                const status = await getPreviewStatus(previewResp.task_id)
-                if (status.status === "completed") {
-                  // 保存预览视频地址到 plan.config.rendered_storage_key，
-                  // 供封面 API 的 E1 兜底路径定位渲染后的视频（含标题烧录）。
-                  // video_url 可能是完整 http(s) URL 或 OSS storage_key，两种格式后端都能处理。
-                  if (status.video_url) {
-                    try {
-                      await updateEditPlan(selectedTemplate, {
-                        config: { rendered_storage_key: status.video_url },
-                      })
-                    } catch (saveErr) {
-                      console.warn(
-                        "[Step6] 保存 rendered_storage_key 失败（不阻塞封面重试）:",
-                        saveErr,
-                      )
-                    }
-                  }
-                  done(() => resolve())
-                } else if (status.status === "failed") {
-                  done(() => reject(new Error(status.error_message || "预览渲染失败")))
-                } else {
-                  setTimeout(poll, 2000)
-                }
-              } catch (e) {
-                done(() => reject(e))
-              }
-            }
-            poll()
-          })
-          message.success("预览视频就绪，重新生成封面...")
-          // 重试封面生成
-          const retryResp = await generateCover(selectedTemplate, {
-            asset_ids: assetIds,
-            cover_type: "ai_frame",
-            ...(titleSettings?.title
-              ? {
-                  title_config: {
-                    text: titleSettings.title,
-                    font: titleSettings.font,
-                    font_size: titleSettings.size,
-                    font_color: titleSettings.color,
-                    position: titleSettings.position,
-                    bold: titleSettings.bold,
-                    stroke: titleSettings.stroke,
-                    shadow: titleSettings.shadow,
-                  },
-                }
-              : {}),
-          })
-          const retryUrl = retryResp.cover?.image_url || ""
-          if (retryUrl) {
-            onCoverSettingsChange({
-              ...coverSettings,
-              thumbnail_url: retryUrl,
-              ai_suggested_time: retryResp.cover?.frame_time ?? null,
-            })
-            message.success("封面生成成功")
-          } else {
-            message.warning("封面生成未返回图片，请重试")
-          }
-        } catch (retryErr) {
-          console.error("[Step6] 自动创建预览后重试失败:", retryErr)
-          message.error("预览视频创建失败，请稍后重试")
-        }
-      } else if (anyErr?.__msgShown) {
-        // 拦截器已处理，不再重复弹出
-      } else {
-        let errorMsg = "封面生成失败"
-        const e = anyErr as {
-          response?: { data?: { detail?: string; message?: string }; status?: number }
-          request?: unknown
-          message?: string
-        }
-        if (e.response) {
-          const detail = e.response.data?.detail || e.response.data?.message || ""
-          errorMsg = detail || `后端错误 (${e.response.status})`
-          console.error("[Step6] 后端返回:", e.response.data)
-        } else if (e.request) {
-          errorMsg = "服务器无响应，请检查网络连接"
-          console.error("[Step6] 请求无响应:", e.request)
-        } else if (e.message) {
-          errorMsg = e.message
-        }
-        message.error(errorMsg)
+      let errorMsg = "封面生成失败"
+      const e = err as {
+        response?: { data?: { detail?: string; message?: string }; status?: number }
+        request?: unknown
+        message?: string
      }
+      if (e.response) {
+        // 后端返回错误
+        const detail = e.response.data?.detail || e.response.data?.message || ""
+        errorMsg = detail || `后端错误 (${e.response.status})`
+        console.error("[Step6] 后端返回:", e.response.data)
+      } else if (e.request) {
+        // 请求已发送但无响应
+        errorMsg = "服务器无响应，请检查网络连接"
+        console.error("[Step6] 请求无响应:", e.request)
+      } else if (e.message) {
+        errorMsg = e.message
+      }
+
+      message.error(errorMsg)
    } finally {
      clearTimeout(timeoutId)
      setGenerating(false)
    }
-  }, [
-    selectedTemplate,
-    assetIds,
-    coverSettings,
-    onCoverSettingsChange,
-    generating,
-    duration,
-    titleSettings,
-    onPreviewTaskCreated,
-    onSourceEditPlanIdExtracted,
-    voiceMode,
-    selectedVoice,
-    selectedClonedVoice,
-    bgm,
-    bgmConfig,
-  ])
+  }, [selectedTemplate, assetIds, coverSettings, onCoverSettingsChange, generating])

  // ── 模板操作方法 ──
  const handleSelectTemplate = useCallback((id: string) => {
@@ -1,9 +1,7 @@
 /**
 * GeneratePage 步骤导航
 * 管理步骤切换与各步骤的前置校验
- * 步骤顺序：模板(1) → 素材(2) → 配音(3) → 标题(4) → 预览(5) → 封面(6) → 确认(7)
- *
- * 前端实时预览架构：Step5 无需等待服务器渲染
+ * 步骤顺序：模板(1) → 素材(2) → 配音(3) → 预览(4) → 标题(5) → 封面(6) → 确认(7)
 */
 import { message } from "antd"
 import type { TitleSettings } from "../types"
@@ -16,6 +14,8 @@ export interface UseStepNavigationOptions {
  selectedMaterials: string[]
  smartSelectedIds: string[]
  titleSettings: TitleSettings
+  /** Step4 是否已生成预览 */
+  previewReady: boolean
 }

 export interface UseStepNavigationReturn {
@@ -32,6 +32,7 @@ export const useStepNavigation = (options: UseStepNavigationOptions): UseStepNav
    selectedMaterials,
    smartSelectedIds,
    titleSettings,
+    previewReady,
  } = options

  const goNext = () => {
@@ -47,7 +48,12 @@ export const useStepNavigation = (options: UseStepNavigationOptions): UseStepNav
      message.warning("请先进行智能匹配并选择素材")
      return
    }
-    if (currentStep === 4 && !titleSettings.title.trim()) {
+    // Step3 配音：配音为可选项，不强制校验，用户可跳过
+    if (currentStep === 4 && !previewReady) {
+      message.warning("请先生成剪辑预览")
+      return
+    }
+    if (currentStep === 5 && !titleSettings.title.trim()) {
      message.warning("请选择或输入标题")
      return
    }
@@ -1,69 +0,0 @@
-/**
- * 将选中素材 + 模板 segments 构建为 edit_plan_clips 写入数据。
- *
- * 逻辑必须与 FrontendPreviewPlayer.tsx 中 buildPlaybackSegments 完全一致：
- *   assetDuration = asset.duration || asset.metadata?.duration || 30
- *   tplSeg = templateSegments[i] || lastSegment
- *   segDuration = clamp(assetDuration, tplSeg.duration_min, tplSeg.duration_max)
- *   start_time = 0
- *   // 关键：预览播放器中 endTime = min(startTime + segDuration, assetDuration)
- *   // 因此 clips.duration 也必须用 min(segDuration, assetDuration) 截断，
- *   // 避免素材实际时长比 clamp 后的 segDuration 短时，Worker 尝试读取不存在的片段
- *   duration = min(segDuration, assetDuration)
- *
- * 预览播放器（Canvas 实时预览）直接在内存中构建 segments 播放，不读 edit_plan_clips；
- * 本函数产出的 clips 写入 DB 后由 Worker 渲染。两边用完全相同的时长计算，
- * 保证用户在编辑过程中看到的预览与最终生成视频一致。
- */
-import type { AssetItem } from "@/api/assets"
-import type { TemplateSegment } from "@/api/templates/types"
-import type { EditPlanClipInput } from "@/api/template-editor"
-
-interface BuildClipsOptions {
-  /** 选中的素材 ID 列表（按选择顺序） */
-  selectedIds: string[]
-  /** 已加载的素材列表（用于查 duration） */
-  materials: AssetItem[]
-  /** 智能匹配返回的素材（auto 模式下可能不在 materials 列表中） */
-  smartMatchedAssets?: AssetItem[]
-  /** 模板 segments */
-  templateSegments?: TemplateSegment[]
-}
-
-export function buildClipsFromAssets({
-  selectedIds,
-  materials,
-  smartMatchedAssets = [],
-  templateSegments = [],
-}: BuildClipsOptions): EditPlanClipInput[] {
-  if (!selectedIds.length) return []
-
-  // 合并两个素材来源，建立 id → asset 索引
-  const assetMap = new Map<string, AssetItem>()
-  for (const a of materials) assetMap.set(a.id, a)
-  for (const a of smartMatchedAssets) assetMap.set(a.id, a)
-
-  const lastSeg = templateSegments[templateSegments.length - 1]
-
-  return selectedIds.map((assetId, i) => {
-    const asset = assetMap.get(assetId)
-    const assetDuration = asset?.duration || asset?.metadata?.duration || 30
-
-    const tplSeg = templateSegments[i] || lastSeg
-    const segDuration = tplSeg
-      ? Math.min(tplSeg.duration_max, Math.max(tplSeg.duration_min, assetDuration))
-      : Math.min(assetDuration, 10)
-
-    // 与 FrontendPreviewPlayer.buildPlaybackSegments 中
-    //   endTime = Math.min(startTime + segDuration, assetDuration)
-    // 保持一致：duration 不能超过素材实际时长
-    const duration = Math.min(segDuration, assetDuration)
-
-    return {
-      asset_id: assetId,
-      start_time: 0,
-      duration,
-      order: i,
-    }
-  })
-}
@@ -1,46 +0,0 @@
-/**
- * 根据视频比例计算输出分辨率
- *
- * 规则：
- * - 长边固定 1920
- * - 短边按 1920 × (短/长) 计算，对齐到偶数
- * - 9:16 → 1080×1920（竖屏）
- * - 16:9 → 1920×1080（横屏）
- * - 1:1   → 1920×1920
- * - 无法解析时 fallback 到 1080×1920
- */
-export interface Resolution {
-  width: number
-  height: number
-}
-
-export function calculateResolution(ratio: string): Resolution {
-  if (!ratio) return { width: 1080, height: 1920 }
-
-  if (ratio.includes(":")) {
-    const [rw, rh] = ratio.split(":").map(Number)
-    if (rw > 0 && rh > 0) {
-      const [longSide, shortSide] = rw < rh ? [rh, rw] : [rw, rh]
-      const baseLong = 1920
-      const baseShort = Math.round((baseLong * shortSide) / longSide)
-      const evenShort = baseShort - (baseShort % 2)
-      if (rw < rh) {
-        // 竖屏：短边是宽，长边是高
-        return { width: evenShort, height: baseLong }
-      } else {
-        // 横屏：长边是宽，短边是高
-        return { width: baseLong, height: evenShort }
-      }
-    }
-    return { width: 1080, height: 1920 }
-  }
-
-  if (ratio.includes("x")) {
-    const [wStr, hStr] = ratio.split("x")
-    const w = parseInt(wStr, 10) || 1080
-    const h = parseInt(hStr, 10) || 1920
-    return { width: w, height: h }
-  }
-
-  return { width: 1080, height: 1920 }
-}
@@ -1,54 +0,0 @@
-/**
- * 共享：根据素材列表和模板片段计算总视频时长
- * GeneratePage（配音校验）和 FrontendPreviewPlayer（播放控制）共用
- */
-
-export interface DurationAsset {
-  id?: string
-  duration?: number
-  metadata?: { duration?: number }
-}
-
-export interface DurationTemplateSegment {
-  duration_min?: number
-  duration_max?: number
-}
-
-/**
- * 计算总视频时长
- * @param assets 素材列表
- * @param template 模板（含 segments）
- * @returns 总时长（秒），无有效数据时返回 0
- */
-export function calculateTotalVideoDuration(
-  assets: DurationAsset[] | undefined,
-  template: { segments?: DurationTemplateSegment[] } | undefined,
-): number {
-  if (!assets || assets.length === 0 || !template) return 0
-
-  const templateSegments = template.segments || []
-
-  return assets.reduce((sum, asset, i) => {
-    const assetDuration = asset.duration || asset.metadata?.duration || 30
-    const tplSeg = templateSegments[i] || templateSegments[templateSegments.length - 1]
-    const segDuration = tplSeg
-      ? Math.min(
-          tplSeg.duration_max ?? assetDuration,
-          Math.max(tplSeg.duration_min ?? 0, assetDuration),
-        )
-      : Math.min(assetDuration, 10)
-    return sum + segDuration
-  }, 0)
-}
-
-/**
- * 估算总视频时长（仅依赖模板 segments）
- * 当素材未加载或加载失败时，用各片段 duration_max 之和作为估算值
- * 确保配音时长校验不会因素材未就绪而跳过
- */
-export function estimateTotalVideoDuration(
-  template: { segments?: DurationTemplateSegment[] } | undefined,
-): number {
-  if (!template?.segments || template.segments.length === 0) return 0
-  return template.segments.reduce((sum, seg) => sum + (seg.duration_max || 0), 0)
-}
@@ -87,7 +87,7 @@ export const useTemplateLibrary = () => {
    [copyMutation],
  )

-  /* 操作：使用模板 → 跳转剪辑模板 */
+  /* 操作：使用模板 → 跳转剪辑编辑器 */
  const handleUse = useCallback(
    (template: TemplateItem) => {
      navigate(`/app/editing-planner?templateId=${template.id}`)
@@ -2,13 +2,14 @@ import { useState, useCallback } from "react"
 import { useMutation, useQueryClient } from "@tanstack/react-query"
 import { message } from "antd"
 import {
+  createAsset,
  uploadAssetDirect,
  getAssetLibraries,
-  getIngestJob,
  type AssetLibraryItem,
 } from "@/api/assets"
 import { tagAsset } from "@/api/tags"
-import { type VoiceGender, type VoiceMaterial } from "../../../types"
+import { type VoiceGender, type VoiceMaterial, buildMetadata } from "../../../types"
+import { getAudioDuration } from "../../../utils/audio"

 interface UseVoiceUploadOptions {
  voiceLibrary?: { id: string; kind: string }
@@ -47,34 +48,32 @@ export function useVoiceUpload({ voiceLibrary, createLibMutation }: UseVoiceUplo
          if (!lib) throw new Error("无法创建配音库")
        }

-        // 2. 上传文件（带进度，后端自动创建 ingest job）
-        const { ingest_job_id } = await uploadAssetDirect({
+        // 2. 上传文件（带进度）
+        const { storage_key } = await uploadAssetDirect({
          file: data.file,
          library_id: lib.id,
          onProgress: (p) => setUploadProgress(p),
        })

-        // 3. 轮询 ingest job 状态
-        let job: Awaited<ReturnType<typeof getIngestJob>> | null = null
-        let retries = 0
-        const maxRetries = 60 // 最多等待 5 分钟
-        while (retries < maxRetries) {
-          await new Promise((r) => setTimeout(r, 5000))
-          job = await getIngestJob(ingest_job_id)
-          if (job.status === "completed" || job.status === "failed") break
-          retries++
-        }
+        // 3. 获取音频时长
+        const duration = await getAudioDuration(data.file)

-        if (!job || job.status === "failed") {
-          throw new Error("音频处理失败，请重试")
-        }
-        if (retries >= maxRetries) {
-          throw new Error("音频处理超时，请稍后在素材库查看")
-        }
+        // 4. 创建素材记录
+        const asset = await createAsset({
+          library_id: lib.id,
+          name: data.name,
+          storage_key,
+          mime_type: data.file.type || "audio/mpeg",
+          metadata: buildMetadata({
+            gender: data.gender,
+            description: data.description,
+            duration,
+          }),
+        })

-        // 4. 打标签（标签走独立 API）
-        if (data.tagIds.length > 0 && job.result_asset_id) {
-          await tagAsset(job.result_asset_id, data.tagIds)
+        // 5. 打标签（标签走独立 API）
+        if (data.tagIds.length > 0) {
+          await tagAsset(asset.id, data.tagIds)
        }
      } finally {
        setUploadProgress(null)
@@ -21,7 +21,7 @@ export interface VoiceMaterial {
  fileUrl?: string
 }

-/** 配音素材上传元数据（上传素材的 metadata） */
+/** 配音素材上传元数据（传递给 createAsset 的 metadata） */
 export interface VoiceAssetMetadata {
  gender: VoiceGender
  description: string
@@ -1,6 +1,8 @@
 import { useState, useCallback } from "react"
 import { useMutation, useQueryClient } from "@tanstack/react-query"
-import { uploadAssetDirect, getAssetLibraries, getIngestJob } from "@/api/assets"
+import { uploadAssetDirect, getAssetLibraries, createAsset } from "@/api/assets"
+import { getAudioDuration } from "../utils/audio"
+import { buildVoiceMetadata } from "../types"

 /**
 * 配音上传 Hook
@@ -31,30 +33,27 @@ export function useVoiceUpload({ showToast }: UseVoiceUploadProps) {
        const lib = libs.find((l) => l.kind === "voice")
        if (!lib) throw new Error("配音库不存在，请先在配音库页面创建")

-        /* 直传文件（后端会自动创建 ingest job） */
-        const { ingest_job_id } = await uploadAssetDirect({
+        /* 直传文件 */
+        const { storage_key } = await uploadAssetDirect({
          file: data.file,
          library_id: lib.id,
          onProgress: (p) => setUploadProgress(p),
        })

-        /* 轮询 ingest job 状态，等待 Worker 处理完成 */
-        let jobStatus = ""
-        let retries = 0
-        const maxRetries = 60 // 最多等待 5 分钟（60 * 5秒）
-        while (jobStatus !== "ready" && jobStatus !== "failed" && retries < maxRetries) {
-          await new Promise((r) => setTimeout(r, 5000))
-          const job = await getIngestJob(ingest_job_id)
-          jobStatus = job.status
-          retries++
-        }
+        /* 获取音频时长 */
+        const duration = await getAudioDuration(data.file)

-        if (jobStatus === "failed") {
-          throw new Error("音频处理失败，请重试")
-        }
-        if (retries >= maxRetries) {
-          throw new Error("音频处理超时，请稍后在素材库查看")
-        }
+        /* 创建素材记录 */
+        await createAsset({
+          library_id: lib.id,
+          name: data.name,
+          storage_key,
+          mime_type: data.file.type || "audio/mpeg",
+          metadata: buildVoiceMetadata({
+            description: data.description,
+            duration,
+          }),
+        })
      } finally {
        setUploadProgress(null)
      }
@@ -39,7 +39,7 @@ export interface ClonedVoiceDisplay {
  sampleUrl?: string
 }

-/** 音色上传元数据（上传素材的 metadata） */
+/** 音色上传元数据（传递给 createAsset 的 metadata） */
 export interface VoiceUploadMetadata {
  gender?: string
  description?: string
@@ -7,9 +7,11 @@ import {
  deleteAssetLibrary,
  getAssets,
  getAssetsByKind,
+  createAsset,
  updateAsset,
  updateAssetReviewStatus,
  deleteAsset,
+  uploadAsset,
  prepareDirectUpload,
  completeDirectUpload,
  uploadAssetDirect,
@@ -173,6 +175,22 @@ describe("assets API", () => {
    })
  })

+  describe("createAsset", () => {
+    it("should resolve successfully", async () => {
+      await expect(createAsset({ name: "test-item" })).resolves.not.toThrow()
+    })
+
+    it("should reject on API error", async () => {
+      mockGet.mockRejectedValue(new Error("Network error"))
+      mockPost.mockRejectedValue(new Error("Network error"))
+      mockPut.mockRejectedValue(new Error("Network error"))
+      mockDelete.mockRejectedValue(new Error("Network error"))
+      mockPatch.mockRejectedValue(new Error("Network error"))
+
+      await expect(createAsset({ name: "test-item" })).rejects.toThrow()
+    })
+  })
+
  describe("updateAsset", () => {
    it("should resolve successfully", async () => {
      await expect(updateAsset("test-assetId")).resolves.not.toThrow()
@@ -221,6 +239,22 @@ describe("assets API", () => {
    })
  })

+  describe("uploadAsset", () => {
+    it("should resolve successfully", async () => {
+      await expect(uploadAsset(new FormData())).resolves.not.toThrow()
+    })
+
+    it("should reject on API error", async () => {
+      mockGet.mockRejectedValue(new Error("Network error"))
+      mockPost.mockRejectedValue(new Error("Network error"))
+      mockPut.mockRejectedValue(new Error("Network error"))
+      mockDelete.mockRejectedValue(new Error("Network error"))
+      mockPatch.mockRejectedValue(new Error("Network error"))
+
+      await expect(uploadAsset(new FormData())).rejects.toThrow()
+    })
+  })
+
  describe("prepareDirectUpload", () => {
    it("should resolve successfully", async () => {
      await expect(prepareDirectUpload({ name: "test-item" })).resolves.not.toThrow()
@@ -32,7 +32,7 @@ describe("bgm API", () => {

  describe("getBgmPresets", () => {
    it("should resolve successfully", async () => {
-      await expect(getBgmPresets("test-template", { category: "test" })).resolves.not.toThrow()
+      await expect(getBgmPresets("test-params?")).resolves.not.toThrow()
    })

    it("should reject on API error", async () => {
@@ -42,7 +42,7 @@ describe("bgm API", () => {
      mockDelete.mockRejectedValue(new Error("Network error"))
      mockPatch.mockRejectedValue(new Error("Network error"))

-      await expect(getBgmPresets("test-template", { category: "test" })).rejects.toThrow()
+      await expect(getBgmPresets("test-params?")).rejects.toThrow()
    })
  })
 })
--- a/Show More
+++ b/Show More