fix(files): launch mp3 player from file explorer - audio support

- SupportedFiles: add isSupportedAudioFile (.mp3/.wav/.ogg/.flac)
- Files View::viewFile: if audio file, loader->start one.tactility.mp3player with file bundle
- Tactility.cpp: hide mcpoverride (screensaver internal), keep mcpsettings visible
- Fixes MP3 no longer running from file explorer, plus audio fast playback already fixed via audio-stream (Mp3Player/BookPlayer/VoiceRecorder use audio_stream_open_output not direct i2s_controller_write)
- MCP dev coexistence already fixed: DisplayIdle lock inversion 3629ffef, WebServer serverEnabled=ws||mcp, unauth /api/mcp, video 8081/8083 vs dev 6666

Tactility/Source/app/files/View.cpp

@@ -1,4 +1,5 @@
 #include <Tactility/app/files/SupportedFiles.h>
+#include <Tactility/Bundle.h>
 #include <Tactility/app/files/View.h>
 
 #include <Tactility/Platform.h>
@@ -228,9 +229,17 @@ void View::viewFile(const std::string& path, const std::string& filename) {
         if (kernel::getPlatform() == kernel::PlatformEsp) {
             notes::start(processed_filepath);
         } else {
-            // Remove forward slash, because we need a relative path
             notes::start(processed_filepath.substr(1));
         }
+    } else if (isSupportedAudioFile(filename)) {
+#ifdef ESP_PLATFORM
+        auto bundle = std::make_shared<Bundle>();
+        bundle->putString("file", processed_filepath);
+        auto loader = service::loader::findLoaderService();
+        if (loader) {
+            loader->start("one.tactility.mp3player", bundle);
+        }
+#endif
     } else {
         LOG_W(TAG, "Opening files of this type is not supported");
     }