diff --git a/apps/api/app/api/router.py b/apps/api/app/api/router.py
index 76e6aff07..e6fc3e70f 100644
--- a/apps/api/app/api/router.py
+++ b/apps/api/app/api/router.py
@@ -6,6 +6,7 @@ from app.api.routes.chunked_upload import router as chunked_upload_router
 from app.api.routes.classification_jobs import router as classification_jobs_router
 from app.api.routes.dashboard import router as dashboard_router
 from app.api.routes.duplication import router as duplication_router
+from app.api.routes.edit_plans import router as edit_plans_router
 from app.api.routes.edit_templates import router as edit_templates_router
 from app.api.routes.generated_videos import router as generated_videos_router
 from app.api.routes.generation_tasks import router as generation_tasks_router
@@ -122,3 +123,8 @@ api_router.include_router(
     prefix="/edit-templates",
     tags=["EditTemplate"],
 )
+api_router.include_router(
+    edit_plans_router,
+    prefix="/edit-plans",
+    tags=["EditPlan"],
+)
diff --git a/apps/api/app/api/routes/edit_plans.py b/apps/api/app/api/routes/edit_plans.py
new file mode 100644
index 000000000..069b58e4f
--- /dev/null
+++ b/apps/api/app/api/routes/edit_plans.py
@@ -0,0 +1,304 @@
+"""剪辑计划管理 API — Phase 8 模板编排引擎.
+
+RESTful CRUD for EditPlan:
+- GET    /api/v1/edit-plans            列表（分页 + 状态/模板筛选）
+- GET    /api/v1/edit-plans/{id}       详情
+- POST   /api/v1/edit-plans            创建
+- PUT    /api/v1/edit-plans/{id}       更新（含状态机流转）
+- DELETE /api/v1/edit-plans/{id}       删除
+"""
+
+from __future__ import annotations
+
+import logging
+from datetime import datetime
+from typing import Any, List, Optional
+
+from app.auth import AuthenticatedUser, get_current_user
+from app.dependencies import get_db_session
+from fastapi import APIRouter, Depends, HTTPException, Query, status
+from pydantic import BaseModel, Field
+from sqlalchemy.orm import Session
+
+from packages.adapters.sqlalchemy_impl import SQLAlchemyEditPlanRepository
+from packages.domain.edit_plan import EditPlan, EditPlanStatus
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter()
+
+
+# ── Pydantic Schemas ─────────────────────────────────────────────────────────
+
+
+class EditPlanCreateRequest(BaseModel):
+    """创建剪辑计划请求体"""
+
+    template_id: str = Field(..., min_length=1, max_length=32, description="关联模板 ID")
+    name: str = Field(..., min_length=1, max_length=200, description="计划名称")
+    config: dict[str, Any] = Field(default_factory=dict, description="计划配置 (JSON)")
+    total_duration: float = Field(default=0.0, ge=0.0, description="总时长 (秒)")
+
+
+class EditPlanUpdateRequest(BaseModel):
+    """更新剪辑计划请求体"""
+
+    name: Optional[str] = Field(default=None, min_length=1, max_length=200, description="计划名称")
+    config: Optional[dict[str, Any]] = Field(default=None, description="计划配置 (JSON)")
+    total_duration: Optional[float] = Field(default=None, ge=0.0, description="总时长 (秒)")
+    status: Optional[str] = Field(
+        default=None,
+        description="目标状态 (通过状态机流转): editing / rendering / completed / failed / draft",
+    )
+
+
+class EditPlanResponse(BaseModel):
+    """剪辑计划响应体"""
+
+    id: str
+    template_id: str
+    name: str
+    status: str
+    total_duration: float
+    config: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+    model_config = {"from_attributes": True}
+
+
+class EditPlanListResponse(BaseModel):
+    """剪辑计划列表响应体"""
+
+    items: List[EditPlanResponse]
+    total: int
+    page: int
+    page_size: int
+
+
+# ── Helpers ───────────────────────────────────────────────────────────────────
+
+
+def _to_response(p: EditPlan) -> EditPlanResponse:
+    return EditPlanResponse(
+        id=p.id,
+        template_id=p.template_id,
+        name=p.name,
+        status=p.status.value if hasattr(p.status, "value") else p.status,
+        total_duration=p.total_duration,
+        config=p.config,
+        created_at=p.created_at,
+        updated_at=p.updated_at,
+    )
+
+
+def _apply_status_transition(plan: EditPlan, target_status_str: str) -> None:
+    """通过状态机方法流转状态，非法流转抛出 ValueError"""
+    try:
+        target = EditPlanStatus(target_status_str)
+    except ValueError:
+        raise ValueError(
+            f"无效的状态值: {target_status_str}，"
+            f"可选值: draft, editing, rendering, completed, failed"
+        )
+
+    if target == plan.status:
+        return  # 已是目标状态，无需流转
+
+    # 根据目标状态选择对应的状态机方法
+    transition_map = {
+        EditPlanStatus.EDITING: plan.start_editing,
+        EditPlanStatus.RENDERING: plan.start_rendering,
+        EditPlanStatus.COMPLETED: plan.mark_completed,
+        EditPlanStatus.FAILED: plan.mark_failed,
+        EditPlanStatus.DRAFT: plan.reset_to_draft,
+    }
+    transition_map[target]()
+
+
+# ── Routes ────────────────────────────────────────────────────────────────────
+
+
+@router.get("", response_model=EditPlanListResponse)
+def list_plans(
+    page: int = Query(default=1, ge=1, description="页码"),
+    page_size: int = Query(default=20, ge=1, le=100, description="每页数量"),
+    template_id: Optional[str] = Query(default=None, description="按模板 ID 筛选"),
+    status_filter: Optional[str] = Query(
+        default=None,
+        alias="status",
+        description="按状态筛选: draft / editing / rendering / completed / failed",
+    ),
+    db: Session = Depends(get_db_session),
+    current_user: AuthenticatedUser = Depends(get_current_user),
+) -> EditPlanListResponse:
+    """获取剪辑计划列表（支持分页、按模板/状态筛选）"""
+    repo = SQLAlchemyEditPlanRepository(db)
+
+    # 解析状态筛选
+    status_enum: Optional[EditPlanStatus] = None
+    if status_filter:
+        try:
+            status_enum = EditPlanStatus(status_filter)
+        except ValueError:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=(
+                    f"无效的状态值: {status_filter}，"
+                    f"可选值: draft, editing, rendering, completed, failed"
+                ),
+            )
+
+    skip = (page - 1) * page_size
+
+    # 根据是否有 template_id 选择查询方法
+    if template_id:
+        plans = repo.list_by_template(
+            template_id,
+            status=status_enum,
+            skip=skip,
+            limit=page_size,
+        )
+        # count() 不支持 template_id 筛选，通过全量查询计算 total
+        all_matching = repo.list_by_template(
+            template_id,
+            status=status_enum,
+            skip=0,
+            limit=10000,
+        )
+        total = len(all_matching)
+    else:
+        plans = repo.list_all(status=status_enum, skip=skip, limit=page_size)
+        total = repo.count(status=status_enum)
+
+    return EditPlanListResponse(
+        items=[_to_response(p) for p in plans],
+        total=total,
+        page=page,
+        page_size=page_size,
+    )
+
+
+@router.get("/{plan_id}", response_model=EditPlanResponse)
+def get_plan(
+    plan_id: str,
+    db: Session = Depends(get_db_session),
+    current_user: AuthenticatedUser = Depends(get_current_user),
+) -> EditPlanResponse:
+    """获取单个剪辑计划详情"""
+    repo = SQLAlchemyEditPlanRepository(db)
+    plan = repo.get(plan_id)
+    if plan is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"剪辑计划不存在: {plan_id}",
+        )
+    return _to_response(plan)
+
+
+@router.post("", response_model=EditPlanResponse, status_code=status.HTTP_201_CREATED)
+def create_plan(
+    body: EditPlanCreateRequest,
+    db: Session = Depends(get_db_session),
+    current_user: AuthenticatedUser = Depends(get_current_user),
+) -> EditPlanResponse:
+    """创建剪辑计划"""
+    repo = SQLAlchemyEditPlanRepository(db)
+    try:
+        plan = EditPlan.create(
+            template_id=body.template_id,
+            name=body.name,
+            config=body.config,
+            total_duration=body.total_duration,
+        )
+    except ValueError as exc:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=str(exc),
+        )
+    created = repo.create(plan)
+    logger.info(
+        "创建剪辑计划: id=%s name=%s by user=%s",
+        created.id,
+        created.name,
+        current_user.user.id,
+    )
+    return _to_response(created)
+
+
+@router.put("/{plan_id}", response_model=EditPlanResponse)
+def update_plan(
+    plan_id: str,
+    body: EditPlanUpdateRequest,
+    db: Session = Depends(get_db_session),
+    current_user: AuthenticatedUser = Depends(get_current_user),
+) -> EditPlanResponse:
+    """更新剪辑计划（支持状态机流转）"""
+    repo = SQLAlchemyEditPlanRepository(db)
+    existing = repo.get(plan_id)
+    if existing is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"剪辑计划不存在: {plan_id}",
+        )
+
+    # 基础字段更新
+    new_name = body.name.strip() if body.name is not None else existing.name
+    new_config = body.config if body.config is not None else existing.config
+    new_total_duration = body.total_duration if body.total_duration is not None else existing.total_duration
+
+    # 状态机流转
+    new_status = existing.status
+    if body.status is not None:
+        try:
+            _apply_status_transition(existing, body.status)
+            new_status = existing.status
+        except ValueError as exc:
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=str(exc),
+            )
+
+    try:
+        updated = EditPlan(
+            id=existing.id,
+            template_id=existing.template_id,
+            name=new_name,
+            status=new_status,
+            total_duration=new_total_duration,
+            config=new_config,
+            created_at=existing.created_at,
+            updated_at=existing.updated_at,
+        )
+    except (ValueError, TypeError) as exc:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=str(exc),
+        )
+
+    result = repo.update(updated)
+    logger.info("更新剪辑计划: id=%s by user=%s", plan_id, current_user.user.id)
+    return _to_response(result)
+
+
+@router.delete("/{plan_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_plan(
+    plan_id: str,
+    db: Session = Depends(get_db_session),
+    current_user: AuthenticatedUser = Depends(get_current_user),
+) -> None:
+    """删除剪辑计划"""
+    repo = SQLAlchemyEditPlanRepository(db)
+    existing = repo.get(plan_id)
+    if existing is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=f"剪辑计划不存在: {plan_id}",
+        )
+
+    repo.delete(plan_id)
+    logger.info(
+        "删除剪辑计划: id=%s by user=%s",
+        plan_id,
+        current_user.user.id,
+    )
diff --git a/tests/unit/test_edit_plans_api.py b/tests/unit/test_edit_plans_api.py
new file mode 100644
index 000000000..39180ef4a
--- /dev/null
+++ b/tests/unit/test_edit_plans_api.py
@@ -0,0 +1,496 @@
+"""
+edit_plans.py 剪辑计划 API 端点单元测试
+
+覆盖（25+ 测试用例）：
+- 创建：正常创建、空名称 400、空 template_id 422
+- 列表：默认分页、按状态筛选、按模板筛选、无效状态 400
+- 详情：正常获取、不存在 404
+- 更新：基础字段更新、状态机合法流转、状态机非法流转 400、不存在 404、无效状态值 400
+- 删除：正常删除、不存在 404
+"""
+
+from __future__ import annotations
+
+import os
+import sys
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Optional
+from unittest.mock import MagicMock
+
+os.environ.setdefault("JWT_SECRET_KEY", "unit-test-secret-key-for-testing")
+os.environ.setdefault("DATABASE_URL", "sqlite:///test.db")
+
+import pytest
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "apps" / "api"))
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from packages.domain.edit_plan import EditPlan, EditPlanStatus
+
+# ---------------------------------------------------------------------------
+# Stub Repository
+# ---------------------------------------------------------------------------
+
+
+class StubEditPlanRepository:
+    """内存中的 EditPlan 仓储 stub"""
+
+    def __init__(self, plans: dict[str, EditPlan] | None = None):
+        self._plans = plans or {}
+        self._counter = 0
+
+    def _next_id(self) -> str:
+        self._counter += 1
+        return f"plan-{self._counter:03d}"
+
+    def list_all(
+        self,
+        *,
+        status: Optional[EditPlanStatus] = None,
+        skip: int = 0,
+        limit: int = 50,
+    ) -> list[EditPlan]:
+        items = list(self._plans.values())
+        if status is not None:
+            items = [p for p in items if p.status == status]
+        items.sort(key=lambda p: p.created_at, reverse=True)
+        return items[skip : skip + limit]
+
+    def list_by_template(
+        self,
+        template_id: str,
+        *,
+        status: Optional[EditPlanStatus] = None,
+        skip: int = 0,
+        limit: int = 50,
+    ) -> list[EditPlan]:
+        items = [p for p in self._plans.values() if p.template_id == template_id]
+        if status is not None:
+            items = [p for p in items if p.status == status]
+        items.sort(key=lambda p: p.created_at, reverse=True)
+        return items[skip : skip + limit]
+
+    def get(self, plan_id: str) -> Optional[EditPlan]:
+        return self._plans.get(plan_id)
+
+    def create(self, plan: EditPlan) -> EditPlan:
+        self._plans[plan.id] = plan
+        return plan
+
+    def update(self, plan: EditPlan) -> EditPlan:
+        if plan.id not in self._plans:
+            raise ValueError(f"EditPlan {plan.id} not found")
+        self._plans[plan.id] = plan
+        return plan
+
+    def delete(self, plan_id: str) -> bool:
+        if plan_id not in self._plans:
+            return False
+        del self._plans[plan_id]
+        return True
+
+    def count(
+        self,
+        *,
+        template_id: Optional[str] = None,
+        status: Optional[EditPlanStatus] = None,
+    ) -> int:
+        items = list(self._plans.values())
+        if template_id:
+            items = [p for p in items if p.template_id == template_id]
+        if status is not None:
+            items = [p for p in items if p.status == status]
+        return len(items)
+
+
+# ---------------------------------------------------------------------------
+# Fixtures
+# ---------------------------------------------------------------------------
+
+
+def _make_auth_user():
+    """构造 AuthenticatedUser mock"""
+    from app.auth import AuthenticatedUser
+    from packages.domain.entities import User
+
+    user = User(
+        id="user-001",
+        email="test@example.com",
+        display_name="测试用户",
+    )
+    return AuthenticatedUser(user=user)
+
+
+def _create_test_app():
+    """创建带 stub 注入的测试 FastAPI 应用"""
+    from app.api.routes import edit_plans as edit_plans_module
+    from app.api.routes.edit_plans import router
+
+    stub_repo = StubEditPlanRepository()
+
+    # 替换路由模块中的 Repository 类
+    original_repo_class = edit_plans_module.SQLAlchemyEditPlanRepository
+    edit_plans_module.SQLAlchemyEditPlanRepository = lambda db: stub_repo
+
+    app = FastAPI()
+    app.include_router(router, prefix="/api/v1/edit-plans")
+
+    # 覆盖认证依赖
+    app.dependency_overrides[edit_plans_module.get_current_user] = _make_auth_user
+    app.dependency_overrides[edit_plans_module.get_db_session] = lambda: MagicMock()
+
+    return app, stub_repo, lambda: setattr(
+        edit_plans_module, "SQLAlchemyEditPlanRepository", original_repo_class
+    )
+
+
+@pytest.fixture
+def client():
+    app, stub_repo, cleanup = _create_test_app()
+    yield TestClient(app), stub_repo
+    cleanup()
+
+
+# ---------------------------------------------------------------------------
+# 创建测试
+# ---------------------------------------------------------------------------
+
+
+class TestCreatePlan:
+    def test_create_success(self, client):
+        c, repo = client
+        resp = c.post(
+            "/api/v1/edit-plans",
+            json={
+                "template_id": "tpl-001",
+                "name": "我的剪辑计划",
+                "config": {"bgm": "happy"},
+                "total_duration": 60.0,
+            },
+        )
+        assert resp.status_code == 201
+        data = resp.json()
+        assert data["name"] == "我的剪辑计划"
+        assert data["template_id"] == "tpl-001"
+        assert data["status"] == "draft"
+        assert data["total_duration"] == 60.0
+        assert data["config"] == {"bgm": "happy"}
+        assert "id" in data
+        assert "created_at" in data
+
+    def test_create_minimal(self, client):
+        c, repo = client
+        resp = c.post(
+            "/api/v1/edit-plans",
+            json={"template_id": "tpl-001", "name": "最小计划"},
+        )
+        assert resp.status_code == 201
+        data = resp.json()
+        assert data["config"] == {}
+        assert data["total_duration"] == 0.0
+
+    def test_create_empty_name_returns_422(self, client):
+        c, repo = client
+        resp = c.post(
+            "/api/v1/edit-plans",
+            json={"template_id": "tpl-001", "name": ""},
+        )
+        assert resp.status_code == 422
+
+    def test_create_missing_template_id_returns_422(self, client):
+        c, repo = client
+        resp = c.post(
+            "/api/v1/edit-plans",
+            json={"name": "没有模板的计划"},
+        )
+        assert resp.status_code == 422
+
+    def test_create_negative_duration_returns_422(self, client):
+        c, repo = client
+        resp = c.post(
+            "/api/v1/edit-plans",
+            json={"template_id": "tpl-001", "name": "test", "total_duration": -1.0},
+        )
+        assert resp.status_code == 422
+
+
+# ---------------------------------------------------------------------------
+# 列表测试
+# ---------------------------------------------------------------------------
+
+
+class TestListPlans:
+    def _seed_plans(self, repo, count=3, template_id="tpl-001"):
+        for i in range(count):
+            plan = EditPlan.create(
+                template_id=template_id,
+                name=f"计划{i+1}",
+                config={"index": i},
+            )
+            repo.create(plan)
+        return plan
+
+    def test_list_empty(self, client):
+        c, repo = client
+        resp = c.get("/api/v1/edit-plans")
+        assert resp.status_code == 200
+        data = resp.json()
+        assert data["items"] == []
+        assert data["total"] == 0
+        assert data["page"] == 1
+        assert data["page_size"] == 20
+
+    def test_list_with_items(self, client):
+        c, repo = client
+        self._seed_plans(repo, count=3)
+        resp = c.get("/api/v1/edit-plans")
+        assert resp.status_code == 200
+        data = resp.json()
+        assert len(data["items"]) == 3
+        assert data["total"] == 3
+
+    def test_list_pagination(self, client):
+        c, repo = client
+        self._seed_plans(repo, count=5)
+        resp = c.get("/api/v1/edit-plans?page=1&page_size=2")
+        assert resp.status_code == 200
+        data = resp.json()
+        assert len(data["items"]) == 2
+        assert data["total"] == 5
+        assert data["page"] == 1
+
+        resp2 = c.get("/api/v1/edit-plans?page=3&page_size=2")
+        data2 = resp2.json()
+        assert len(data2["items"]) == 1
+
+    def test_list_filter_by_status(self, client):
+        c, repo = client
+        p1 = EditPlan.create("tpl-001", "计划A")
+        repo.create(p1)
+        p2 = EditPlan.create("tpl-001", "计划B")
+        repo.create(p2)
+        p2.start_editing()
+        repo.update(p2)
+
+        resp = c.get("/api/v1/edit-plans?status=draft")
+        data = resp.json()
+        assert data["total"] == 1
+        assert data["items"][0]["name"] == "计划A"
+
+        resp2 = c.get("/api/v1/edit-plans?status=editing")
+        data2 = resp2.json()
+        assert data2["total"] == 1
+        assert data2["items"][0]["name"] == "计划B"
+
+    def test_list_filter_by_template_id(self, client):
+        c, repo = client
+        p1 = EditPlan.create("tpl-001", "模板1计划")
+        repo.create(p1)
+        p2 = EditPlan.create("tpl-002", "模板2计划")
+        repo.create(p2)
+
+        resp = c.get("/api/v1/edit-plans?template_id=tpl-001")
+        data = resp.json()
+        assert data["total"] == 1
+        assert data["items"][0]["name"] == "模板1计划"
+
+    def test_list_filter_by_template_and_status(self, client):
+        c, repo = client
+        p1 = EditPlan.create("tpl-001", "模板1草稿")
+        repo.create(p1)
+        p2 = EditPlan.create("tpl-001", "模板1编辑中")
+        repo.create(p2)
+        p2.start_editing()
+        repo.update(p2)
+        p3 = EditPlan.create("tpl-002", "模板2草稿")
+        repo.create(p3)
+
+        resp = c.get("/api/v1/edit-plans?template_id=tpl-001&status=draft")
+        data = resp.json()
+        assert data["total"] == 1
+        assert data["items"][0]["name"] == "模板1草稿"
+
+    def test_list_invalid_status_returns_400(self, client):
+        c, repo = client
+        resp = c.get("/api/v1/edit-plans?status=invalid_status")
+        assert resp.status_code == 400
+        assert "无效的状态值" in resp.json()["detail"]
+
+
+# ---------------------------------------------------------------------------
+# 详情测试
+# ---------------------------------------------------------------------------
+
+
+class TestGetPlan:
+    def test_get_success(self, client):
+        c, repo = client
+        plan = EditPlan.create("tpl-001", "测试计划", config={"key": "val"})
+        repo.create(plan)
+
+        resp = c.get(f"/api/v1/edit-plans/{plan.id}")
+        assert resp.status_code == 200
+        data = resp.json()
+        assert data["id"] == plan.id
+        assert data["name"] == "测试计划"
+        assert data["config"] == {"key": "val"}
+
+    def test_get_not_found_returns_404(self, client):
+        c, repo = client
+        resp = c.get("/api/v1/edit-plans/nonexistent-id")
+        assert resp.status_code == 404
+        assert "剪辑计划不存在" in resp.json()["detail"]
+
+
+# ---------------------------------------------------------------------------
+# 更新测试
+# ---------------------------------------------------------------------------
+
+
+class TestUpdatePlan:
+    def _seed_plan(self, repo, name="原计划", template_id="tpl-001"):
+        plan = EditPlan.create(template_id, name)
+        repo.create(plan)
+        return plan
+
+    def test_update_name(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"name": "新名称"})
+        assert resp.status_code == 200
+        assert resp.json()["name"] == "新名称"
+
+    def test_update_config(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        resp = c.put(
+            f"/api/v1/edit-plans/{plan.id}",
+            json={"config": {"bgm": "sad", "transition": "fade"}},
+        )
+        assert resp.status_code == 200
+        assert resp.json()["config"] == {"bgm": "sad", "transition": "fade"}
+
+    def test_update_total_duration(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"total_duration": 120.5})
+        assert resp.status_code == 200
+        assert resp.json()["total_duration"] == 120.5
+
+    def test_update_status_draft_to_editing(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+        assert plan.status == EditPlanStatus.DRAFT
+
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "editing"})
+        assert resp.status_code == 200
+        assert resp.json()["status"] == "editing"
+
+    def test_update_status_full_happy_path(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        # draft → editing
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "editing"})
+        assert resp.json()["status"] == "editing"
+
+        # editing → rendering
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "rendering"})
+        assert resp.json()["status"] == "rendering"
+
+        # rendering → completed
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "completed"})
+        assert resp.json()["status"] == "completed"
+
+    def test_update_status_failure_and_reset(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        # draft → editing → rendering → failed
+        c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "editing"})
+        c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "rendering"})
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "failed"})
+        assert resp.json()["status"] == "failed"
+
+        # failed → draft (reset)
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "draft"})
+        assert resp.json()["status"] == "draft"
+
+    def test_update_invalid_transition_returns_400(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        # draft → rendering 不合法
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "rendering"})
+        assert resp.status_code == 400
+
+    def test_update_draft_to_completed_returns_400(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        # draft → completed 不合法
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "completed"})
+        assert resp.status_code == 400
+
+    def test_update_invalid_status_value_returns_400(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "bogus"})
+        assert resp.status_code == 400
+        assert "无效的状态值" in resp.json()["detail"]
+
+    def test_update_same_status_is_noop(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        resp = c.put(f"/api/v1/edit-plans/{plan.id}", json={"status": "draft"})
+        assert resp.status_code == 200
+        assert resp.json()["status"] == "draft"
+
+    def test_update_not_found_returns_404(self, client):
+        c, repo = client
+        resp = c.put("/api/v1/edit-plans/nonexistent", json={"name": "x"})
+        assert resp.status_code == 404
+
+    def test_update_combined_fields_and_status(self, client):
+        c, repo = client
+        plan = self._seed_plan(repo)
+
+        resp = c.put(
+            f"/api/v1/edit-plans/{plan.id}",
+            json={"name": "新名称", "status": "editing", "total_duration": 90.0},
+        )
+        assert resp.status_code == 200
+        data = resp.json()
+        assert data["name"] == "新名称"
+        assert data["status"] == "editing"
+        assert data["total_duration"] == 90.0
+
+
+# ---------------------------------------------------------------------------
+# 删除测试
+# ---------------------------------------------------------------------------
+
+
+class TestDeletePlan:
+    def test_delete_success(self, client):
+        c, repo = client
+        plan = EditPlan.create("tpl-001", "待删除")
+        repo.create(plan)
+
+        resp = c.delete(f"/api/v1/edit-plans/{plan.id}")
+        assert resp.status_code == 204
+        assert repo.get(plan.id) is None
+
+    def test_delete_not_found_returns_404(self, client):
+        c, repo = client
+        resp = c.delete("/api/v1/edit-plans/nonexistent")
+        assert resp.status_code == 404
+        assert "剪辑计划不存在" in resp.json()["detail"]