Release v1.3.0: Multi-source downloads, audio analyzer resilience, mobile improvements

Major Features:
- Multi-source download system (Soulseek/Lidarr with fallback)
- Configurable enrichment speed control (1-5x)
- Mobile touch drag support for seek sliders
- iOS PWA media controls (Control Center, Lock Screen)
- Artist name alias resolution via Last.fm
- Circuit breaker pattern for audio analysis

Critical Fixes:
- Audio analyzer stability (non-ASCII, BrokenProcessPool, OOM)
- Discovery system race conditions and import failures
- Radio decade categorization using originalYear
- LastFM API response normalization
- Mood bucket infinite loop prevention

Security:
- Bull Board admin authentication
- Lidarr webhook signature verification
- JWT token expiration and refresh
- Encryption key validation on startup

Closes #2, #6, #9, #13, #21, #26, #31, #34, #35, #37, #40, #43

frontend/app/error.tsx

@@ -0,0 +1,30 @@
+'use client';
+
+import { useEffect } from 'react';
+import { Button } from '@/components/ui/Button';
+
+export default function Error({
+  error,
+  reset,
+}: {
+  error: Error & { digest?: string };
+  reset: () => void;
+}) {
+  useEffect(() => {
+    console.error('Route error:', error);
+  }, [error]);
+
+  return (
+    <div className="flex h-screen items-center justify-center bg-black">
+      <div className="text-center">
+        <h2 className="text-2xl font-bold text-white mb-4">
+          Something went wrong
+        </h2>
+        <p className="text-gray-400 mb-6">
+          {error.message || 'An unexpected error occurred'}
+        </p>
+        <Button onClick={reset}>Try again</Button>
+      </div>
+    </div>
+  );
+}