feat(ai-writing): 研究模板独立实体 + 配置页 + 内置范例 + 点击直接进入写作（0616 #5）

后端：
- 新持久化包 research_templates（表 ai_writing_research_templates，create_all 建表，注册 models/__init__），deps 接 research_template_store
- 路由 /api/ai-writing/research-templates CRUD（在 ai_writing.py）
- 内置范例 网摘/周报/要讯（DEFAULT_RESEARCH_TEMPLATES + seed_defaults，表空时由 list 接口幂等播种）
- tests/test_research_templates.py（9 passed）

前端：
- api/ai-writing-research-templates.ts + hooks/useResearchTemplates.ts
- 配置页 ResearchTemplatesConfigPage（/page/canvas/research-templates）CRUD
- ResearchSidebar 研究模板改用研究模板实体；点击回填整张表单并直接 startWriting 进入写作；顶部齿轮进配置页

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

offline-backend-20260512/backend/app/gateway/deps.py

@@ -168,6 +168,10 @@ async def langgraph_runtime(app: FastAPI) -> AsyncGenerator[None, None]:
 
         app.state.article_type_store = make_article_type_store(sf)
 
+        from deerflow.persistence.research_templates import make_research_template_store
+
+        app.state.research_template_store = make_research_template_store(sf)
+
         from deerflow.persistence.memory_config import make_user_memory_config_store
 
         app.state.memory_config_store = make_user_memory_config_store(sf)
@@ -423,6 +427,11 @@ def get_article_type_store(request: Request):
     return getattr(request.app.state, "article_type_store", None)
 
 
+def get_research_template_store(request: Request):
+    """Return the research template store, or None when not configured."""
+    return getattr(request.app.state, "research_template_store", None)
+
+
 def get_memory_config_store(request: Request):
     """Return the per-user memory config store."""
     val = getattr(request.app.state, "memory_config_store", None)

offline-backend-20260512/backend/app/gateway/routers/ai_writing.py

@@ -90,6 +90,48 @@ class ArticleTypeResponse(BaseModel):
     updated_at: str
 
 
+class ResearchTemplateRequest(BaseModel):
+    name: str
+    description: Optional[str] = None
+    article_type_key: Optional[str] = None
+    outline: Optional[str] = None
+    material_source: str = "general"
+    word_count: int = 800
+    audience: Optional[str] = None
+    strict_mode: bool = False
+    topic: Optional[str] = None
+    sort_order: int = 0
+
+
+class UpdateResearchTemplateRequest(BaseModel):
+    name: Optional[str] = None
+    description: Optional[str] = None
+    article_type_key: Optional[str] = None
+    outline: Optional[str] = None
+    material_source: Optional[str] = None
+    word_count: Optional[int] = None
+    audience: Optional[str] = None
+    strict_mode: Optional[bool] = None
+    topic: Optional[str] = None
+    sort_order: Optional[int] = None
+
+
+class ResearchTemplateResponse(BaseModel):
+    id: str
+    name: str
+    description: Optional[str] = None
+    article_type_key: Optional[str] = None
+    outline: Optional[str] = None
+    material_source: str
+    word_count: int
+    audience: Optional[str] = None
+    strict_mode: bool
+    topic: Optional[str] = None
+    sort_order: int
+    created_at: str
+    updated_at: str
+
+
 class SessionResponse(BaseModel):
     id: str
     user_id: Optional[str] = None
@@ -268,6 +310,94 @@ async def delete_article_type(article_type_id: str, request: Request):
     return {"success": True}
 
 
+# ── 研究模板（课题研究左栏一键预填表单，需求 0616 #5）────────────────────────────
+
+
+@router.get("/research-templates", response_model=list[ResearchTemplateResponse])
+async def list_research_templates(request: Request):
+    """列出所有研究模板，按 sort_order 升序。
+
+    新机器/空表时自动写入内置范例模板（网摘/周报/要讯），幂等仅在表为空时执行。
+    """
+    from app.gateway.deps import get_research_template_store
+
+    store = get_research_template_store(request)
+    if store is None:
+        return []
+    try:
+        await store.seed_defaults()
+    except Exception:
+        logger.exception("ai_writing: failed to seed default research templates")
+    return await store.list()
+
+
+@router.post("/research-templates", response_model=ResearchTemplateResponse, status_code=201)
+async def create_research_template(body: ResearchTemplateRequest, request: Request):
+    """新增研究模板。"""
+    from app.gateway.deps import get_research_template_store
+
+    store = get_research_template_store(request)
+    if store is None:
+        raise HTTPException(status_code=503, detail="Research template store not available")
+    return await store.create(
+        name=body.name,
+        description=body.description,
+        article_type_key=body.article_type_key,
+        outline=body.outline,
+        material_source=body.material_source,
+        word_count=body.word_count,
+        audience=body.audience,
+        strict_mode=body.strict_mode,
+        topic=body.topic,
+        sort_order=body.sort_order,
+    )
+
+
+@router.patch("/research-templates/{template_id}", response_model=ResearchTemplateResponse)
+async def update_research_template(template_id: str, body: UpdateResearchTemplateRequest, request: Request):
+    """更新研究模板字段（只传需要修改的字段）。"""
+    from app.gateway.deps import get_research_template_store
+
+    store = get_research_template_store(request)
+    if store is None:
+        raise HTTPException(status_code=503, detail="Research template store not available")
+
+    kwargs = {}
+    for field in (
+        "name",
+        "description",
+        "article_type_key",
+        "outline",
+        "material_source",
+        "word_count",
+        "audience",
+        "strict_mode",
+        "topic",
+        "sort_order",
+    ):
+        val = getattr(body, field)
+        if val is not None:
+            kwargs[field] = val
+
+    updated = await store.update(template_id, **kwargs)
+    if updated is None:
+        raise HTTPException(status_code=404, detail="Research template not found")
+    return updated
+
+
+@router.delete("/research-templates/{template_id}")
+async def delete_research_template(template_id: str, request: Request):
+    """删除研究模板。"""
+    from app.gateway.deps import get_research_template_store
+
+    store = get_research_template_store(request)
+    if store is None:
+        raise HTTPException(status_code=503, detail="Research template store not available")
+    deleted = await store.delete(template_id)
+    if not deleted:
+        raise HTTPException(status_code=404, detail="Research template not found")
+    return {"success": True}
+
 
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