feat: add paginatin to music

app/Http/Controllers/MusicController.php

@@ -32,23 +32,29 @@ public function getAllMusic()
         return response()->json($music);
     }
 
-    public function index()
+    public function index(Request $request)
     {
         $userId = auth()->id();
 
+        // Paginated so clients don't pull the whole library at once.
+        $perPage = (int) $request->input('per_page', 20);
+        $perPage = max(1, min($perPage, 100));
+
+        // (public) OR (private AND owned by me) — grouped so it stays correct.
         $music = Music::with(['image', 'playlists'])
-            ->where('type', 'public')
-            ->orWhere(function($query) use ($userId) {
-                $query->where('type', 'private')
-                      ->where('user_id', $userId);
+            ->where(function ($query) use ($userId) {
+                $query->where('type', 'public')
+                    ->orWhere(function ($q) use ($userId) {
+                        $q->where('type', 'private')
+                          ->where('user_id', $userId);
+                    });
             })
             ->orderBy('created_at', 'desc')
-            ->get();
+            ->paginate($perPage);
 
-        return response()->json([
-            'data' => $music,
-            'total' => $music->count()
-        ]);
+        // Laravel's paginator JSON keeps `data` and `total`, and adds
+        // current_page / last_page / per_page for the client.
+        return response()->json($music);
     }
 
 public function getMusicByPlaylist($playlistId)