Fix subtitle-cycle OSD labels and harden quality gates

- Resolve J/Shift+J subtitle-cycle OSD text via track-list labels and property expansion
- Add mpv proxy OSD runtime + regression coverage across IPC/main/runtime paths
- Scope `make pretty` to maintained source files and add scoped Prettier script
- Align release workflow with cache/install order and explicit TypeScript check
- Clean up duplicate submodule entry and remove checked-in docs/plans artifacts

src/main/dependencies.ts

@@ -186,6 +186,7 @@ export interface MpvCommandRuntimeServiceDepsParams {
   mpvPlayNextSubtitle: HandleMpvCommandFromIpcOptions['mpvPlayNextSubtitle'];
   shiftSubDelayToAdjacentSubtitle: HandleMpvCommandFromIpcOptions['shiftSubDelayToAdjacentSubtitle'];
   mpvSendCommand: HandleMpvCommandFromIpcOptions['mpvSendCommand'];
+  resolveProxyCommandOsd?: HandleMpvCommandFromIpcOptions['resolveProxyCommandOsd'];
   isMpvConnected: HandleMpvCommandFromIpcOptions['isMpvConnected'];
   hasRuntimeOptionsManager: HandleMpvCommandFromIpcOptions['hasRuntimeOptionsManager'];
 }
@@ -339,6 +340,7 @@ export function createMpvCommandRuntimeServiceDeps(
     mpvPlayNextSubtitle: params.mpvPlayNextSubtitle,
     shiftSubDelayToAdjacentSubtitle: params.shiftSubDelayToAdjacentSubtitle,
     mpvSendCommand: params.mpvSendCommand,
+    resolveProxyCommandOsd: params.resolveProxyCommandOsd,
     isMpvConnected: params.isMpvConnected,
     hasRuntimeOptionsManager: params.hasRuntimeOptionsManager,
   };