feat(www): serve InstantDB migration app at /migrate/instantdb

apps/www/lib/rewrites.js

@@ -55,6 +55,14 @@ const rewrites = [
     source: '/evals/:path*',
     destination: 'https://supabase-evals.vercel.app/:path*',
   },
+  {
+    source: '/migrate/instantdb',
+    destination: 'https://instantdb-to-supabase.vercel.app/migrate/instantdb',
+  },
+  {
+    source: '/migrate/instantdb/:path*',
+    destination: 'https://instantdb-to-supabase.vercel.app/migrate/instantdb/:path*',
+  },
 
   {
     source: '/new-docs',

apps/www/next.config.test.ts

@@ -62,6 +62,25 @@ describe('next.config.mjs', () => {
     ).toBeLessThan(redirects.findIndex((redirect) => redirect.source === '/ui/:path*'))
   })
 
+  it('proxies the InstantDB migration app with its basePath prefix intact', async () => {
+    const { default: config } = (await import('./next.config.mjs')) as { default: NextConfig }
+    const rewrites = await config.rewrites?.()
+    const afterFiles = (rewrites && 'afterFiles' in rewrites && rewrites.afterFiles) || []
+
+    expect(afterFiles).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          source: '/migrate/instantdb',
+          destination: 'https://instantdb-to-supabase.vercel.app/migrate/instantdb',
+        }),
+        expect.objectContaining({
+          source: '/migrate/instantdb/:path*',
+          destination: 'https://instantdb-to-supabase.vercel.app/migrate/instantdb/:path*',
+        }),
+      ])
+    )
+  })
+
   it('routes unmatched markdown-negotiated paths to the md-404 handler via fallback rewrites', async () => {
     const { default: config } = (await import('./next.config.mjs')) as { default: NextConfig }
     const rewrites = await config.rewrites?.()