feat(launcher): add mpv args passthrough

launcher/config/args-normalizer.ts

@@ -134,6 +134,7 @@ export function createDefaultArgs(launcherConfig: LauncherYoutubeSubgenConfig):
     mpvIdle: false,
     mpvSocket: false,
     mpvStatus: false,
+    mpvArgs: '',
     appPassthrough: false,
     appArgs: [],
     jellyfinServer: '',
@@ -189,6 +190,7 @@ export function applyRootOptionsToArgs(
   if (options.rofi === true) parsed.useRofi = true;
   if (options.startOverlay === true) parsed.autoStartOverlay = true;
   if (options.texthooker === false) parsed.useTexthooker = false;
+  if (typeof options.args === 'string') parsed.mpvArgs = options.args;
   if (typeof rootTarget === 'string' && rootTarget) ensureTarget(rootTarget, parsed);
 }
 

launcher/config/cli-parser-builder.ts

@@ -57,6 +57,7 @@ function applyRootOptions(program: Command): void {
   program
     .option('-b, --backend <backend>', 'Display backend')
     .option('-d, --directory <dir>', 'Directory to browse')
+    .option('-a, --args <args>', 'Pass arguments to MPV')
     .option('-r, --recursive', 'Search directories recursively')
     .option('-p, --profile <profile>', 'MPV profile')
     .option('--start', 'Explicitly start overlay')
@@ -103,6 +104,8 @@ function getTopLevelCommand(argv: string[]): { name: string; index: number } | n
   const optionsWithValue = new Set([
     '-b',
     '--backend',
+    '-a',
+    '--args',
     '-d',
     '--directory',
     '-p',