feat: add app-owned YouTube subtitle flow with absPlayer-style parsing (#31)

* fix: harden preload argv parsing for popup windows

* fix: align youtube playback with shared overlay startup

* fix: unwrap mpv youtube streams for anki media mining

* docs: update docs for youtube subtitle and mining flow

* refactor: unify cli and runtime wiring for startup and youtube flow

* feat: update subtitle sidebar overlay behavior

* chore: add shared log-file source for diagnostics

* fix(ci): add changelog fragment for immersion changes

* fix: address CodeRabbit review feedback

* fix: persist canonical title from youtube metadata

* style: format stats library tab

* fix: address latest review feedback

* style: format stats library files

* test: stub launcher youtube deps in CI

* test: isolate launcher youtube flow deps

* test: stub launcher youtube deps in failing case

* test: force x11 backend in launcher ci harness

* test: address latest review feedback

* fix(launcher): preserve user YouTube ytdl raw options

* docs(backlog): update task tracking notes

* fix(immersion): special-case youtube media paths in runtime and tracking

* feat(stats): improve YouTube media metadata and picker key handling

* fix(ci): format stats media library hook

* fix: address latest CodeRabbit review items

* docs: update youtube release notes and docs

* feat: auto-load youtube subtitles before manual picker

* fix: restore app-owned youtube subtitle flow

* docs: update youtube playback docs and config copy

* refactor: remove legacy youtube launcher mode plumbing

* fix: refine youtube subtitle startup binding

* docs: clarify youtube subtitle startup behavior

* fix: address PR #31 latest review follow-ups

* fix: address PR #31 follow-up review comments

* test: harden youtube picker test harness

* udpate backlog

* fix: add timeout to youtube metadata probe

* docs: refresh youtube and stats docs

* update backlog

* update backlog

* chore: release v0.9.0

launcher/config/cli-parser-builder.ts

@@ -14,18 +14,6 @@ export interface JellyfinInvocation {
   logLevel?: string;
 }
 
-export interface YtInvocation {
-  target?: string;
-  outDir?: string;
-  keepTemp?: boolean;
-  whisperBin?: string;
-  whisperModel?: string;
-  whisperVadModel?: string;
-  whisperThreads?: number;
-  ytSubgenAudioFormat?: string;
-  logLevel?: string;
-}
-
 export interface CommandActionInvocation {
   action: string;
   logLevel?: string;
@@ -33,7 +21,6 @@ export interface CommandActionInvocation {
 
 export interface CliInvocations {
   jellyfinInvocation: JellyfinInvocation | null;
-  ytInvocation: YtInvocation | null;
   configInvocation: CommandActionInvocation | null;
   mpvInvocation: CommandActionInvocation | null;
   appInvocation: { appArgs: string[] } | null;
@@ -89,8 +76,6 @@ function getTopLevelCommand(argv: string[]): { name: string; index: number } | n
   const commandNames = new Set([
     'jellyfin',
     'jf',
-    'yt',
-    'youtube',
     'doctor',
     'config',
     'mpv',
@@ -142,7 +127,6 @@ export function parseCliPrograms(
   invocations: CliInvocations;
 } {
   let jellyfinInvocation: JellyfinInvocation | null = null;
-  let ytInvocation: YtInvocation | null = null;
   let configInvocation: CommandActionInvocation | null = null;
   let mpvInvocation: CommandActionInvocation | null = null;
   let appInvocation: { appArgs: string[] } | null = null;
@@ -217,38 +201,6 @@ export function parseCliPrograms(
       };
     });
 
-  commandProgram
-    .command('yt')
-    .alias('youtube')
-    .description('YouTube workflows')
-    .argument('[target]', 'YouTube URL or ytsearch: query')
-    .option('-o, --out-dir <dir>', 'Subtitle output dir')
-    .option('--keep-temp', 'Keep temp files')
-    .option('--whisper-bin <path>', 'whisper.cpp CLI path')
-    .option('--whisper-model <path>', 'whisper model path')
-    .option('--whisper-vad-model <path>', 'whisper.cpp VAD model path')
-    .option('--whisper-threads <n>', 'whisper.cpp thread count')
-    .option('--yt-subgen-audio-format <format>', 'Audio extraction format')
-    .option('--log-level <level>', 'Log level')
-    .action((target: string | undefined, options: Record<string, unknown>) => {
-      ytInvocation = {
-        target,
-        outDir: typeof options.outDir === 'string' ? options.outDir : undefined,
-        keepTemp: options.keepTemp === true,
-        whisperBin: typeof options.whisperBin === 'string' ? options.whisperBin : undefined,
-        whisperModel: typeof options.whisperModel === 'string' ? options.whisperModel : undefined,
-        whisperVadModel:
-          typeof options.whisperVadModel === 'string' ? options.whisperVadModel : undefined,
-        whisperThreads:
-          typeof options.whisperThreads === 'number' && Number.isFinite(options.whisperThreads)
-            ? Math.floor(options.whisperThreads)
-            : undefined,
-        ytSubgenAudioFormat:
-          typeof options.ytSubgenAudioFormat === 'string' ? options.ytSubgenAudioFormat : undefined,
-        logLevel: typeof options.logLevel === 'string' ? options.logLevel : undefined,
-      };
-    });
-
   commandProgram
     .command('dictionary')
     .alias('dict')
@@ -382,7 +334,6 @@ export function parseCliPrograms(
     rootTarget: rootProgram.processedArgs[0],
     invocations: {
       jellyfinInvocation,
-      ytInvocation,
       configInvocation,
       mpvInvocation,
       appInvocation,