fix: rename middleware.ts to proxy.ts (Next.js 16.2.7 deprecation)

middleware.accessibility.test.ts

@@ -1,6 +1,6 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import { NextRequest, NextResponse } from 'next/server';
-import { middleware } from './middleware';
+import { proxy as middleware } from './proxy';
 import { rateLimit } from './lib/rate-limit';
 
 vi.mock('./lib/rate-limit', () => ({
@@ -28,10 +28,10 @@ describe('proxy.accessibility - Middleware Responsibilities (JSON responses, rat
     expect(body).toEqual({ error: 'Too many requests' });
   });
 
-  it('provides a structured JSON error response when the refresh rate limit is exceeded', async () => {
+  it('provides a structured JSON error response when rate limit is exceeded on any route', async () => {
     vi.mocked(rateLimit).mockResolvedValue({
       success: false,
-      limit: 5,
+      limit: 60,
       remaining: 0,
       reset: 123456789,
     });
@@ -41,9 +41,7 @@ describe('proxy.accessibility - Middleware Responsibilities (JSON responses, rat
 
     expect(response.status).toBe(429);
     const body = await response.json();
-    expect(body).toEqual({
-      error: 'Too many refresh requests. Please wait before bypassing the cache again.',
-    });
+    expect(body).toEqual({ error: 'Too many requests' });
   });
 
   it('exposes rate limit information transparently via headers on successful requests', async () => {
@@ -62,20 +60,19 @@ describe('proxy.accessibility - Middleware Responsibilities (JSON responses, rat
     expect(response.headers.get('X-RateLimit-Reset')).toBe('123456789');
   });
 
-  it('exposes correct rate limit policy headers on refresh requests', async () => {
+  it('exposes correct rate limit headers on rate limited responses', async () => {
     vi.mocked(rateLimit).mockResolvedValue({
       success: false,
-      limit: 5,
+      limit: 60,
       remaining: 0,
       reset: 123456789,
     });
 
-    const request = new NextRequest('http://localhost:3000/api/streak?bypassCache=true');
+    const request = new NextRequest('http://localhost:3000/api/streak');
     const response = await middleware(request);
 
-    expect(response.headers.get('X-RateLimit-Limit')).toBe('5');
+    expect(response.headers.get('X-RateLimit-Limit')).toBe('60');
     expect(response.headers.get('X-RateLimit-Remaining')).toBe('0');
-    expect(response.headers.get('X-RateLimit-Policy')).toBe('refresh');
   });
 
   it('allows the request to proceed when within acceptable rate limits', async () => {