feature：新增拆书导入续写功能，给当年的ta一个结局。

backend/app/main.py

@@ -130,7 +130,7 @@ from app.api import (
     wizard_stream, relationships, organizations,
     auth, users, settings, writing_styles, memories,
     mcp_plugins, admin, inspiration, prompt_templates,
-    changelog, careers, foreshadows, prompt_workshop
+    changelog, careers, foreshadows, prompt_workshop, book_import
 )
 
 app.include_router(auth.router, prefix="/api")
@@ -154,6 +154,7 @@ app.include_router(mcp_plugins.router, prefix="/api")  # MCP插件管理API
 app.include_router(prompt_templates.router, prefix="/api")  # 提示词模板管理API
 app.include_router(changelog.router, prefix="/api")  # 更新日志API
 app.include_router(prompt_workshop.router, prefix="/api")  # 提示词工坊API
+app.include_router(book_import.router, prefix="/api")  # 拆书导入API
 
 static_dir = Path(__file__).parent.parent / "static"
 if static_dir.exists():