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/core/services/ipc.ts

@@ -10,6 +10,8 @@ import type {
   SubtitlePosition,
   SubsyncManualRunRequest,
   SubsyncResult,
+  YoutubePickerResolveRequest,
+  YoutubePickerResolveResult,
 } from '../../types';
 import { IPC_CHANNELS, type OverlayHostedModal } from '../../shared/ipc/contracts';
 import {
@@ -23,6 +25,7 @@ import {
   parseRuntimeOptionValue,
   parseSubtitlePosition,
   parseSubsyncManualRunRequest,
+  parseYoutubePickerResolveRequest,
 } from '../../shared/ipc/validators';
 
 const { BrowserWindow, ipcMain } = electron;
@@ -61,6 +64,7 @@ export interface IpcServiceDeps {
   getCurrentSecondarySub: () => string;
   focusMainWindow: () => void;
   runSubsyncManual: (request: SubsyncManualRunRequest) => Promise<SubsyncResult>;
+  onYoutubePickerResolve: (request: YoutubePickerResolveRequest) => Promise<YoutubePickerResolveResult>;
   getAnkiConnectStatus: () => boolean;
   getRuntimeOptions: () => unknown;
   setRuntimeOption: (id: RuntimeOptionId, value: RuntimeOptionValue) => unknown;
@@ -163,6 +167,7 @@ export interface IpcDepsRuntimeOptions {
   getMpvClient: () => MpvClientLike | null;
   focusMainWindow: () => void;
   runSubsyncManual: (request: SubsyncManualRunRequest) => Promise<SubsyncResult>;
+  onYoutubePickerResolve: (request: YoutubePickerResolveRequest) => Promise<YoutubePickerResolveResult>;
   getAnkiConnectStatus: () => boolean;
   getRuntimeOptions: () => unknown;
   setRuntimeOption: (id: RuntimeOptionId, value: RuntimeOptionValue) => unknown;
@@ -225,6 +230,7 @@ export function createIpcDepsRuntime(options: IpcDepsRuntimeOptions): IpcService
       mainWindow.focus();
     },
     runSubsyncManual: options.runSubsyncManual,
+    onYoutubePickerResolve: options.onYoutubePickerResolve,
     getAnkiConnectStatus: options.getAnkiConnectStatus,
     getRuntimeOptions: options.getRuntimeOptions,
     setRuntimeOption: options.setRuntimeOption,
@@ -285,6 +291,14 @@ export function registerIpcHandlers(deps: IpcServiceDeps, ipc: IpcMainRegistrar
     deps.onOverlayModalOpened(parsedModal);
   });
 
+  ipc.handle(IPC_CHANNELS.request.youtubePickerResolve, async (_event: unknown, request: unknown) => {
+    const parsedRequest = parseYoutubePickerResolveRequest(request);
+    if (!parsedRequest) {
+      return { ok: false, message: 'Invalid YouTube picker resolve payload' };
+    }
+    return await deps.onYoutubePickerResolve(parsedRequest);
+  });
+
   ipc.on(IPC_CHANNELS.command.openYomitanSettings, () => {
     deps.openYomitanSettings();
   });