docs: update youtube playback docs and config copy

docs-site/usage.md

@@ -78,8 +78,6 @@ subminer mpv idle                 # Launch detached idle mpv with SubMiner defau
 subminer dictionary /path/to/file-or-directory  # Generate character dictionary ZIP from target (manual Yomitan import)
 subminer texthooker               # Launch texthooker-only mode
 subminer app --anilist            # Pass args directly to SubMiner binary (example: AniList login flow)
-subminer yt -o ~/subs https://youtu.be/...  # YouTube subcommand: output directory shortcut
-subminer yt --keep-temp --whisper-bin /path/to/whisper-cli --whisper-model /path/to/model.bin --whisper-vad-model /path/to/ggml-vad.bin https://youtu.be/...  # Keep generated subtitle workspace for debugging
 
 # Direct packaged app control
 SubMiner.AppImage --background             # Start in background (tray + IPC wait, minimal logs)
@@ -137,14 +135,13 @@ This flow requires `mpv.exe` to be on `PATH`. If it is installed elsewhere, set
 ### Launcher Subcommands
 
 - `subminer jellyfin` / `subminer jf`: Jellyfin-focused workflow aliases.
-- `subminer yt` / `subminer youtube`: YouTube-focused shorthand flags (`-o`, `--keep-temp`, `--whisper-*`).
 - `subminer doctor`: health checks for core dependencies and runtime paths.
 - `subminer config`: config helpers (`path`, `show`).
 - `subminer mpv`: mpv helpers (`status`, `socket`, `idle`).
 - `subminer dictionary <path>`: generates a Yomitan-importable character dictionary ZIP from a file/directory target.
 - `subminer texthooker`: texthooker-only shortcut (same behavior as `--texthooker`).
 - `subminer app` / `subminer bin`: direct passthrough to the SubMiner binary/AppImage.
-- Subcommand help pages are available (for example `subminer jellyfin -h`, `subminer yt -h`).
+- Subcommand help pages are available (for example `subminer jellyfin -h`).
 
 ### First-Run Setup
 
@@ -174,8 +171,8 @@ AniList character dictionary auto-sync (optional):
 - SubMiner syncs the currently watched AniList media into a per-media snapshot, then rebuilds one merged `SubMiner Character Dictionary` from the most recently used snapshots.
 - Rotation limit defaults to 3 recent media snapshots in that merged dictionary (`maxLoaded`).
 
-Use subcommands for Jellyfin/YouTube command families (`subminer jellyfin ...`, `subminer yt ...`).
-Top-level launcher flags like `--jellyfin-*` and `--yt-subgen-*` are intentionally rejected.
+Use subcommands for Jellyfin workflows (`subminer jellyfin ...`).
+Top-level launcher flags like `--jellyfin-*` are intentionally rejected.
 
 ### MPV Profile Example (mpv.conf)
 
@@ -228,28 +225,17 @@ If you also use Yomitan in a browser, configure that browser profile separately;
 ### YouTube Playback
 
 `subminer` accepts direct URLs (for example, YouTube links) and `ytsearch:` targets.
-For YouTube playback, SubMiner now resolves its default startup subtitle selection before mpv starts regular playback: it pauses at startup, auto-selects the default primary subtitle track plus a best-effort secondary track, then resumes with any downloaded subtitle files attached. Playback waits only for the primary subtitle to load and tokenize. If the primary subtitle cannot be loaded, playback resumes and SubMiner reports the failure through the configured notification path.
+For YouTube playback, SubMiner resolves subtitle selection before mpv starts regular playback: it pauses at startup, auto-selects the default primary subtitle track plus a best-effort secondary track, then resumes when primary subtitles are ready.
 
 Notes:
 
 - Install `yt-dlp` so mpv can resolve YouTube streams and subtitle tracks reliably.
-- For YouTube URLs, startup no longer requires the overlay picker.
-- Press `Ctrl+Shift+J` during active YouTube playback to open the manual YouTube subtitle picker and retry track selection.
-- For YouTube URLs, `subminer` generates only the missing tracks after probing YouTube's native/manual subtitle inventory.
-- It probes manual/native YouTube subtitle tracks first, then falls back to local `whisper.cpp` only for missing tracks.
+- For YouTube URLs, startup no longer requires opening the picker first; SubMiner loads subtitles and keeps the overlay available for retries.
+- Press `Ctrl+Alt+C` during active YouTube playback to open the manual YouTube subtitle picker and retry track selection.
+- For YouTube URLs, `subminer` probes available YouTube/manual subtitle tracks and loads matching tracks in mpv.
 - Primary subtitle target languages come from `youtubeSubgen.primarySubLanguages` (defaults to `["ja","jpn"]`).
 - Secondary target languages come from `secondarySub.secondarySubLanguages` (defaults to English if unset).
-- Whisper translation fallback currently only supports English secondary targets; non-English secondary targets rely on native/manual subtitle availability.
-- Optional AI cleanup for whisper-generated subtitles is controlled by `youtubeSubgen.fixWithAi` plus the shared top-level `ai` config (with optional `youtubeSubgen.ai` overrides).
-- Configure defaults in `$XDG_CONFIG_HOME/SubMiner/config.jsonc` (or `~/.config/SubMiner/config.jsonc`) under `youtubeSubgen`, `secondarySub`, and `ai`.
-- CLI overrides are available through `subminer yt` / `subminer youtube`:
-  - `-o, --out-dir`
-  - `--keep-temp`
-  - `--whisper-bin`
-  - `--whisper-model`
-  - `--whisper-vad-model`
-  - `--whisper-threads`
-  - `--yt-subgen-audio-format`
+- Configure defaults in `$XDG_CONFIG_HOME/SubMiner/config.jsonc` (or `~/.config/SubMiner/config.jsonc`) under `youtubeSubgen` and `secondarySub`.
 
 ## Controller Support