Refactor AI proxy error handling and remove deprecated upload and event routes

- Updated `getAiProxy` function to return a JSON response for missing objects when the user is the owner.
- Removed the `upload.ts`, `event.ts`, and related middleware files to streamline the codebase.
- Cleaned up `handle-request.ts` and `index.ts` by removing unused imports and routes.
- Deleted chunk upload handling and related utility functions to simplify resource management.
- Enhanced app manager list functionality to support app creation if not found.

src/modules/fm-manager/proxy/ai-proxy.ts

@@ -98,10 +98,19 @@ const getAiProxy = async (req: IncomingMessage, res: ServerResponse, opts: Proxy
       return true;
     }
     const stat = await oss.statObject(objectName);
-    if (!stat) {
-      createNotFoundPage('Invalid proxy url');
+    if (!stat && isOwner) {
+      // createNotFoundPage('文件不存在');
+      res.writeHead(200, { 'content-type': 'application/json' });
+      res.end(
+        JSON.stringify({
+          code: 404,
+          message: 'object not found',
+        }),
+      );
       logger.debug('no stat', objectName, owner, req.url);
       return true;
+    } else if (!stat && !isOwner) {
+      return createNotFoundPage('Invalid ai proxy url');
     }
     const permissionInstance = new UserPermission({ permission: stat.metaData as Permission, owner: owner });
     const checkPermission = permissionInstance.checkPermissionSuccess({
@@ -112,6 +121,7 @@ const getAiProxy = async (req: IncomingMessage, res: ServerResponse, opts: Proxy
       logger.info('no permission', checkPermission, loginUser, owner);
       return createNotFoundPage('no permission');
     }
+
     if (showStat) {
       res.writeHead(200, { 'content-type': 'application/json' });
       res.end(