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

docs-site/troubleshooting.md

@@ -29,7 +29,7 @@ SubMiner retries the connection automatically with increasing delays (200 ms, 50
 - Common spikes come from:
   - first subtitle parse/tokenization bursts
   - media generation (`ffmpeg` audio/image and AVIF paths)
-  - media sync and subtitle tooling (`alass`, `ffsubsync`, `whisper` fallback path)
+  - media sync and subtitle tooling (`alass`, `ffsubsync`)
   - `ankiConnect` enrichment (plus polling overhead when proxy mode is disabled)
 
 ### If playback feels sluggish
@@ -57,7 +57,7 @@ SubMiner retries the connection automatically with increasing delays (200 ms, 50
 
 - disable AI translation when not needed (`ankiConnect.ai.enabled: false`)
 - if needed, run immersion telemetry with lower duration expectations (`immersionTracking.enabled: false` for constrained sessions)
-- prefer YouTube `--mode automatic` over `preprocess` on low-resource systems
+- favor the default lightweight YouTube subtitle startup settings on low-resource systems
 
 ### Practical low-impact profile