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/routes-simple/handle-request.ts

@@ -1,20 +1,9 @@
-import { useFileStore } from '@kevisual/use-config';
 import http from 'node:http';
-import fs from 'fs';
-import Busboy from 'busboy';
-import { app, oss } from '@/app.ts';
-
-import { getContentType } from '@/utils/get-content-type.ts';
-import { User } from '@/models/user.ts';
-import { router, error, checkAuth, writeEvents } from './router.ts';
+import { router } from './router.ts';
 import './index.ts';
 import { handleRequest as PageProxy } from './page-proxy.ts';
 
 const simpleAppsPrefixs = [
-  "/api/micro-app/",
-  "/api/events",
-  "/api/s1/",
-  "/api/resource/",
   "/api/wxmsg"
 ];