feat(stats): add launcher stats command and build integration

- Launcher stats subcommand with cleanup mode
- Stats frontend build integrated into Makefile
- CI workflow updated for stats package
- Config example updated with stats section
- mpv plugin menu entry for stats toggle

launcher/main.ts

@@ -14,6 +14,7 @@ import { runConfigCommand } from './commands/config-command.js';
 import { runMpvPostAppCommand, runMpvPreAppCommand } from './commands/mpv-command.js';
 import { runAppPassthroughCommand, runTexthookerCommand } from './commands/app-command.js';
 import { runDictionaryCommand } from './commands/dictionary-command.js';
+import { runStatsCommand } from './commands/stats-command.js';
 import { runJellyfinCommand } from './commands/jellyfin-command.js';
 import { runPlaybackCommand } from './commands/playback-command.js';
 
@@ -95,6 +96,10 @@ async function main(): Promise<void> {
     return;
   }
 
+  if (await runStatsCommand(appContext)) {
+    return;
+  }
+
   if (await runJellyfinCommand(appContext)) {
     return;
   }