Fix: Address Next.js middleware file convention deprecation (#1623)

* fix: Use proxy.ts instead of deprecated middleware.ts

Renamed middleware.ts to proxy.ts and updated the exported function to align with the latest Next.js file convention, resolving the build warning.

* fix(ci): Update lint script to use proxy.ts

Updated the `lint` and `lint:fix` scripts in `package.json` to reference the renamed `proxy.ts` file, resolving the CI failure.

---------

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: google-labs-jules[bot]

package.json

@@ -19,8 +19,8 @@
     "pm2:stop": "pm2 stop hrm-server",
     "pm2:restart": "pm2 restart hrm-server",
     "pm2:delete": "pm2 delete hrm-server",
-    "lint": "eslint app/ components/ constants/ context/ hooks/ lib/ services/ tests/ types/ utils/ server.ts middleware.ts --cache",
-    "lint:fix": "eslint app/ components/ constants/ context/ hooks/ lib/ services/ tests/ types/ utils/ server.ts middleware.ts --fix --cache",
+    "lint": "eslint app/ components/ constants/ context/ hooks/ lib/ services/ tests/ types/ utils/ server.ts proxy.ts --cache",
+    "lint:fix": "eslint app/ components/ constants/ context/ hooks/ lib/ services/ tests/ types/ utils/ server.ts proxy.ts --fix --cache",
     "format": "prettier --write .",
     "format:check": "prettier --check .",
     "test": "pnpm run test:all",

middleware.ts proxy.tsmiddleware.ts renamed to proxy.ts

@@ -1,6 +1,6 @@
-// File: middleware.ts (NextAuth Reverse Proxy Middleware)
+// File: proxy.ts (NextAuth Reverse Proxy)
 /**
- * Middleware to handle reverse proxy headers for NextAuth.js
+ * Proxy to handle reverse proxy headers for NextAuth.js.
  * This ensures that HTTPS cookies work properly behind a reverse proxy.
  */
 import { NextResponse } from 'next/server'
@@ -9,7 +9,7 @@ import type { NextRequest } from 'next/server'
 // Base path for auth routes
 const API_AUTH_BASE = '/api/auth/'
 
-export function middleware(request: NextRequest) {
+export function proxy(request: NextRequest) {
   // Only handle auth routes
   if (!request.nextUrl.pathname.startsWith(API_AUTH_BASE)) {
     return NextResponse.next()
@@ -54,7 +54,7 @@ export function middleware(request: NextRequest) {
 
   // Debug logging in development
   if (process.env.NODE_ENV === 'development') {
-    console.log('[Middleware] Auth request:', {
+    console.log('[Proxy] Auth request:', {
       pathname: request.nextUrl.pathname,
       host: request.headers.get('host'),
       forwardedHost,