Replace Dongrays with FreeMidi adapter

- BitMidi is blocked by Cloudflare on Vercel (403)
- Dongrays domain is dead (ENOTFOUND)
- Add FreeMidi adapter as primary search source
- FreeMidi returns real MIDI files without blocking

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

server/src/services/MIDISearchService.ts

@@ -1,18 +1,17 @@
 import type { SearchAdapter, MIDICandidate } from '../types.js';
 import { BitMidiAdapter } from '../adapters/BitMidiAdapter.js';
-import { DongraysAdapter } from '../adapters/DongraysAdapter.js';
-import { MockAdapter } from '../adapters/MockAdapter.js';
+import { FreeMidiAdapter } from '../adapters/FreeMidiAdapter.js';
 
 export class MIDISearchService {
   private adapters: SearchAdapter[];
 
   constructor() {
-    // Real MIDI adapters only - no mock
+    // FreeMidi first (more reliable), BitMidi as backup
     this.adapters = [
-      new BitMidiAdapter(),
-      new DongraysAdapter()
+      new FreeMidiAdapter(),
+      new BitMidiAdapter()
     ];
-    console.log('MIDISearchService initialized with real adapters:', this.adapters.map(a => a.name));
+    console.log('MIDISearchService initialized with adapters:', this.adapters.map(a => a.name));
   }
 
   async search(query: string): Promise<MIDICandidate[]> {