feat(#2001): 爆款标题样式配置面板后端支持 (#2004)

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

apps/api/app/api/routes/ai_avatar_render.py

@@ -63,6 +63,7 @@ def create_render_job(
             b_roll_segments=[s.model_dump() for s in body.b_roll_segments],
             title_config=body.title_config,
             cover_config=body.cover_config,
+            cover_title_config=body.cover_title_config,
             project_id=body.project_id,
         )
     except AiAvatarRenderError as exc:

apps/api/app/schemas/ai_avatar_render.py

@@ -53,9 +53,14 @@ class CreateAiAvatarRenderRequest(BaseModel):
     script_id: str = Field("", description="文案 ID（选自文案库时传；手动输入文案直生场景可留空）")
     b_roll_segments: list[BRollSegment] = Field(default_factory=list, description="B-roll 片段列表")
     title_config: dict[str, Any] = Field(
-        default_factory=dict, description="标题配置（可含 title_image_dataurl：前端 Canvas 渲染的标题 PNG dataURL）"
+        default_factory=dict,
+        description="标题配置（可含 title_image_dataurl：前端 Canvas 渲染的标题 PNG dataURL；含 line_overrides 逐行样式）",
     )
     cover_config: dict[str, Any] = Field(default_factory=dict, description="封面配置")
+    cover_title_config: dict[str, Any] = Field(
+        default_factory=dict,
+        description="封面独立标题配置（#2001），结构同 title_config；为空时封面不叠标题",
+    )
     project_id: str = Field("", description="项目 ID")
 
     @field_validator("lipsync_job_id")
@@ -83,6 +88,7 @@ class AiAvatarRenderJobResponse(BaseModel):
     b_roll_segments: list[dict[str, Any]]
     title_config: dict[str, Any]
     cover_config: dict[str, Any]
+    cover_title_config: dict[str, Any] = Field(default_factory=dict, description="封面独立标题配置")
     status: str
     progress: int
     output_video_url: str

apps/api/app/services/ai_avatar_render_service.py

@@ -61,6 +61,7 @@ class AiAvatarRenderService:
         b_roll_segments: list[dict[str, Any]] | None = None,
         title_config: dict[str, Any],
         cover_config: dict[str, Any],
+        cover_title_config: dict[str, Any] | None = None,
         project_id: str = "",
     ) -> AiAvatarRenderJob:
         """创建渲染任务.
@@ -112,6 +113,7 @@ class AiAvatarRenderService:
             b_roll_segments=[s if isinstance(s, dict) else s.model_dump() for s in (b_roll_segments or [])],
             title_config=title_config,
             cover_config=cover_config,
+            cover_title_config=cover_title_config or {},
             status="pending",
         )
         self.db.add(job)