chore(mpv): share desktop startup options and stop forwarding unused Android events

Linux and Windows each wrote the same eleven pre-initialize mpv options
(keep-open, idle, input disabling, OSC, ytdl, audio fallback, and the
audio-only set); ApplyCommonStartupOptions in mpv_player_common.h owns
them once, with the ytdl security rationale kept in one place. Rendering,
windowing, HDR, and log-level options stay per platform.

The Android JNI event thread forwarded every mpv event to Kotlin, where
MpvEvent modelled ten variants but MpvPlayerCore consumes four. The
native switch now forwards only START_FILE, FILE_LOADED, and
PLAYBACK_RESTART (END_FILE keeps its own path), and the unused variants
are gone.

android/app/src/main/kotlin/com/edde746/plezy/mpv/MpvPlayerCore.kt

@@ -537,7 +537,6 @@ class MpvPlayerCore private constructor(
             delegate?.onEvent("file-loaded", null)
           }
           is MpvEvent.PlaybackRestart -> delegate?.onEvent("playback-restart", null)
-          else -> {}
         }
       }
     }

android/libmpv/src/main/cpp/event.cpp

@@ -81,10 +81,15 @@ void* event_thread(void* arg) {
       case MPV_EVENT_END_FILE:
         sendEndFileToJava(env, mp_event);
         break;
-      default:
+      case MPV_EVENT_START_FILE:
+      case MPV_EVENT_FILE_LOADED:
+      case MPV_EVENT_PLAYBACK_RESTART:
         ALOGV("event: %s\n", mpv_event_name(mp_event->event_id));
         sendEventToJava(env, mp_event->event_id);
         break;
+      default:
+        // Nothing on the Kotlin side consumes the remaining ids (MpvEvent.fromId).
+        break;
     }
   }
 

android/libmpv/src/main/java/com/edde746/plezy/libmpv/MpvEvent.kt

@@ -1,30 +1,18 @@
 package com.edde746.plezy.libmpv
 
 sealed interface MpvEvent {
-  data object Shutdown : MpvEvent
   data object StartFile : MpvEvent
   data class EndFile(val reason: EndFileReason?) : MpvEvent
   data object FileLoaded : MpvEvent
-  data object VideoReconfig : MpvEvent
-  data object AudioReconfig : MpvEvent
-  data object Seek : MpvEvent
   data object PlaybackRestart : MpvEvent
-  data object QueueOverflow : MpvEvent
-  data class Other(val eventId: Int) : MpvEvent
 
   companion object {
+    // Mirrors the ids event.cpp forwards; END_FILE arrives via its own JNI path.
     internal fun fromId(id: Int): MpvEvent? = when (id) {
-      1 -> Shutdown
       6 -> StartFile
       8 -> FileLoaded
-      17 -> VideoReconfig
-      18 -> AudioReconfig
-      20 -> Seek
       21 -> PlaybackRestart
-      24 -> QueueOverflow
-      // 0=NONE, 2=LOG_MESSAGE, 7=END_FILE, 22=PROPERTY_CHANGE handled separately
-      0, 2, 7, 22 -> null
-      else -> Other(id)
+      else -> null
     }
   }
 }