fix/various fixes

api/app/features/memoir/router.py

@@ -2,14 +2,18 @@
 回忆录 feature — books / chapters / memoir-state 合并路由
 """
 
-from app.core.logging import get_logger
 from typing import List, Optional
 
 from fastapi import APIRouter, Body, Depends, Query
 
 from app.core.dependencies import get_current_user
+from app.core.logging import get_logger
 from app.features.memoir.deps import get_memoir_service
-from app.features.memoir.schemas import ExportPdfRequest, UpdateBookRequest
+from app.features.memoir.schemas import (
+    ExportPdfRequest,
+    SetChapterStoryOrderRequest,
+    UpdateBookRequest,
+)
 from app.features.memoir.service import MemoirService
 from app.features.user.models import User
 
@@ -129,6 +133,21 @@ async def regenerate_chapter(
     return await service.regenerate_chapter(chapter_id, current_user.id)
 
 
+@router.put("/chapters/{chapter_id}/story-order")
+async def set_chapter_story_order(
+    chapter_id: str,
+    request: SetChapterStoryOrderRequest = Body(...),
+    current_user: User = Depends(get_current_user),
+    service: MemoirService = Depends(get_memoir_service),
+):
+    """
+    设置章节收录的 stories 顺序（覆盖 chapter_story_links），并立即物化 canonical_markdown。
+    """
+    return await service.set_chapter_story_order(
+        chapter_id, current_user.id, request.story_ids
+    )
+
+
 # ===========================================================================
 # Memoir-state endpoints
 # ===========================================================================