refactor: 统一渲染链路，预览即所得（-3370行） (#1479)

Co-authored-by: xiaoxia <dev@xiaoxiajianji.com>
Co-committed-by: xiaoxia <dev@xiaoxiajianji.com>

apps/api/app/api/routes/generation_preview.py

@@ -5,7 +5,6 @@
 
 from __future__ import annotations
 
-import json
 import logging
 
 from app.auth import AuthenticatedUser, get_current_user
@@ -268,19 +267,7 @@ def create_preview_generation_task(
     # 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)
 
-    # 处理标题配置：如果有标题文本，序列化到 custom_title 字段传递给 worker
     title_config = request.title_config or {}
-    title_text = (title_config.get("text") or "").strip()
-    custom_title_value = ""
-    if title_text:
-        # 将标题文本和样式配置序列化为 JSON 存入 custom_title
-        # Worker 端会解析 JSON 获取完整标题配置
-        custom_title_value = json.dumps(title_config, ensure_ascii=False)
-        logger.info(
-            "[预览生成] 标题配置: text=%s, config_keys=%s",
-            title_text[:30],
-            list(title_config.keys()),
-        )
 
     use_case = CreateGenerationTaskUseCase(generation_task_repository)
 
@@ -305,7 +292,7 @@ def create_preview_generation_task(
                 auto_retry_enabled=False,
                 auto_retry_max=0,
                 is_preview=True,
-                custom_title=custom_title_value,
+                title_config=title_config,
             )
         )
     except ValueError as e:

apps/api/app/api/routes/generation_tasks.py

@@ -70,7 +70,6 @@ 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", ""),
-        custom_title=getattr(task, "custom_title", ""),
         title_config=getattr(task, "title_config", {}) or {},
         logs=getattr(task, "logs", "[]"),
         status=task.status,
@@ -355,7 +354,6 @@ def create_generation_task(
                     output_width=request.output_width,
                     output_height=request.output_height,
                     cover_url=request.cover_url,
-                    custom_title=request.custom_title,
                     title_config=request.title_config or {},
                 )
             )
@@ -473,7 +471,6 @@ def confirm_generation(
         if resolution_match:
             source_task.mark_confirmed(
                 cover_url=request.cover_url,
-                custom_title=request.custom_title,
                 output_width=request.output_width,
                 output_height=request.output_height,
             )
@@ -519,7 +516,6 @@ def confirm_generation(
             output_width=request.output_width,
             output_height=request.output_height,
             cover_url=request.cover_url,
-            custom_title=request.custom_title,
         )
     )
 
@@ -652,7 +648,6 @@ 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:

apps/api/app/schemas/generation_task.py

@@ -10,7 +10,6 @@ class ConfirmGenerationRequest(BaseModel):
     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")
     cover_url: str = Field(default="", description="自定义封面图片 URL")
-    custom_title: str = Field(default="", description="自定义视频标题")
 
 
 class CreateGenerationTaskRequest(BaseModel):
@@ -33,7 +32,7 @@ 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，优先于 custom_title 纯文本）──
+    # ── 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。",
@@ -77,7 +76,6 @@ 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":
@@ -113,7 +111,6 @@ class GenerationTaskResponse(BaseModel):
     output_width: int = 1280
     output_height: int = 720
     cover_url: str = ""
-    custom_title: str = ""
     title_config: dict = Field(default_factory=dict)
     status: str
     progress: float