feat: 重构知识库系统，移除Hermes集成，增强RAG和同步功能

主要变更:
- 移除Hermes智能体及相关回调服务
- 新增知识库RAG、同步、调度、规范化和索引任务服务
- 重构orchestrator服务，增强运行时聊天功能
- 更新前端聊天、政策制度、设置等页面样式和逻辑
- 更新expense_claims和document_intelligence服务
- 删除llm_wiki相关服务和测试文件
- 更新docker-compose配置和启动脚本

server/src/app/main.py

@@ -14,9 +14,11 @@ from app.middleware.logging import AccessLogMiddleware
 from app.schemas.common import RootStatusRead
 from app.services.agent_foundation import prepare_agent_foundation
 from app.services.employee import prepare_employee_directory
-from app.services.knowledge import prepare_knowledge_library
-from app.services.llm_wiki_tasks import llm_wiki_task_manager
 from app.services.hermes_sync import sync_repository_hermes_skills
+from app.services.knowledge import prepare_knowledge_library
+from app.services.knowledge_index_tasks import knowledge_index_task_manager
+from app.services.knowledge_rag import shutdown_knowledge_rag_runtime
+from app.services.knowledge_scheduler import knowledge_index_scheduler
 
 
 @asynccontextmanager
@@ -28,6 +30,7 @@ async def lifespan(_: FastAPI) -> AsyncIterator[None]:
     prepare_agent_foundation()
     prepare_knowledge_library()
     sync_repository_hermes_skills()
+    knowledge_index_scheduler.start()
     logger.info(
         "Server ready - host=%s port=%s prefix=%s",
         settings.app_host,
@@ -35,23 +38,25 @@ async def lifespan(_: FastAPI) -> AsyncIterator[None]:
         settings.api_v1_prefix,
     )
     yield
-    llm_wiki_task_manager.shutdown()
+    knowledge_index_scheduler.shutdown()
+    knowledge_index_task_manager.shutdown()
+    shutdown_knowledge_rag_runtime()
 
 
 def create_app() -> FastAPI:
     settings = get_settings()
-
-    setup_logging(
-        level=settings.log_level,
-        log_dir=settings.log_dir,
-        enable_file=settings.log_file_enabled,
-    )
-
-    logger = get_logger("app.main")
-    logger.info(
-        "Starting %s (env=%s, debug=%s)", settings.app_name, settings.app_env, settings.app_debug
-    )
-
+
+    setup_logging(
+        level=settings.log_level,
+        log_dir=settings.log_dir,
+        enable_file=settings.log_file_enabled,
+    )
+
+    logger = get_logger("app.main")
+    logger.info(
+        "Starting %s (env=%s, debug=%s)", settings.app_name, settings.app_env, settings.app_debug
+    )
+
     app = FastAPI(
         title=settings.app_name,
         debug=settings.app_debug,
@@ -60,31 +65,31 @@ def create_app() -> FastAPI:
         openapi_tags=OPENAPI_TAGS,
         lifespan=lifespan,
     )
-
-    app.add_middleware(AccessLogMiddleware)
-
-    if settings.cors_origins:
-        app.add_middleware(
-            CORSMiddleware,
-            allow_origins=settings.cors_origins,
-            allow_credentials=True,
-            allow_methods=["*"],
-            allow_headers=["*"],
-        )
-
-    app.include_router(api_router, prefix=settings.api_v1_prefix)
-
+
+    app.add_middleware(AccessLogMiddleware)
+
+    if settings.cors_origins:
+        app.add_middleware(
+            CORSMiddleware,
+            allow_origins=settings.cors_origins,
+            allow_credentials=True,
+            allow_methods=["*"],
+            allow_headers=["*"],
+        )
+
+    app.include_router(api_router, prefix=settings.api_v1_prefix)
+
     @app.get(
         "/",
         tags=["root"],
         response_model=RootStatusRead,
         summary="服务根检查",
-        description="用于快速确认后端服务进程已经启动。",
+        description="用于快速确认后端服务进程已启动。",
     )
     def root() -> RootStatusRead:
         return RootStatusRead(message=f"{settings.app_name} is running")
 
     return app
-
-
-app = create_app()
+
+
+app = create_app()