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

src/shared/ipc/contracts.ts

@@ -4,6 +4,7 @@ export const OVERLAY_HOSTED_MODALS = [
   'runtime-options',
   'subsync',
   'jimaku',
+  'youtube-track-picker',
   'kiku',
   'controller-select',
   'controller-debug',
@@ -18,6 +19,7 @@ export const IPC_CHANNELS = {
     openYomitanSettings: 'open-yomitan-settings',
     recordYomitanLookup: 'record-yomitan-lookup',
     quitApp: 'quit-app',
+    youtubePickerResolve: 'youtube:picker-resolve',
     toggleDevTools: 'toggle-dev-tools',
     toggleOverlay: 'toggle-overlay',
     saveSubtitlePosition: 'save-subtitle-position',
@@ -51,6 +53,7 @@ export const IPC_CHANNELS = {
     getControllerConfig: 'get-controller-config',
     getSecondarySubMode: 'get-secondary-sub-mode',
     getCurrentSecondarySub: 'get-current-secondary-sub',
+    youtubePickerResolve: 'youtube:picker-resolve',
     focusMainWindow: 'focus-main-window',
     runSubsyncManual: 'subsync:run-manual',
     getAnkiConnectStatus: 'get-anki-connect-status',
@@ -94,6 +97,8 @@ export const IPC_CHANNELS = {
     runtimeOptionsChanged: 'runtime-options:changed',
     runtimeOptionsOpen: 'runtime-options:open',
     jimakuOpen: 'jimaku:open',
+    youtubePickerOpen: 'youtube:picker-open',
+    youtubePickerCancel: 'youtube:picker-cancel',
     keyboardModeToggleRequested: 'keyboard-mode-toggle:requested',
     lookupWindowToggleRequested: 'lookup-window-toggle:requested',
     configHotReload: 'config:hot-reload',