docs: document --playback-feedback CLI flag

- Add flag to usage.md CLI reference and notes section
- Add cross-reference in configuration.md notification surface section

docs-site/configuration.md

@@ -236,6 +236,8 @@ Every overlay notification shown during a session is also recorded in a notifica
 
 Startup tokenization, subtitle annotation, and character dictionary status follow the configured notification surface. When the surface is `"overlay"` or `"both"`, SubMiner queues those startup notifications until the overlay renderer is ready instead of falling back to mpv OSD. If loading and ready states both finish before the overlay can paint, the loading card is delivered first and then updates to ready shortly after. With `"both"`, character dictionary checking/building/importing/ready status also goes to system notifications; building and importing are only emitted when that work is actually needed. The bundled mpv plugin only shows its startup OSD messages when `ankiConnect.behavior.notificationType` is set to `"osd"` or `"osd-system"` in `config.jsonc`; AniSkip prompts and skip result messages are playback feedback and still route to overlay notifications when configured.
 
+The equivalent direct CLI command is `--playback-feedback <text>` (`playbackFeedback` internally). It sends that one non-empty feedback string through the same route controlled by `ankiConnect.behavior.notificationType`; it does not change the saved config.
+
 ### Auto-Start Overlay
 
 Control whether the overlay automatically becomes visible when it connects to mpv:

docs-site/usage.md

@@ -132,6 +132,7 @@ SubMiner.AppImage --toggle-primary-subtitle-bar       # Toggle primary subtitle
 SubMiner.AppImage --start --dev                         # Enable app/dev mode only
 SubMiner.AppImage --start --debug                       # Alias for --dev
 SubMiner.AppImage --start --log-level debug             # Force verbose logging without app/dev mode
+SubMiner.AppImage --playback-feedback "your feedback"   # Route playback feedback through the configured feedback surface
 SubMiner.AppImage --yomitan               # Open Yomitan settings
 SubMiner.AppImage --settings              # Open SubMiner settings window
 SubMiner.AppImage --jellyfin              # Open Jellyfin setup window
@@ -163,6 +164,7 @@ Once Jellyfin is configured, the tray menu includes `Jellyfin Discovery` for sta
   Launcher pass-through commands also support `--password-store=<backend>` and forward it to the app when present.
   Override with e.g. `--password-store=basic_text`.
 - Use both when needed, for example `SubMiner.AppImage --start --dev --log-level debug` (or `SubMiner.exe --start --dev --log-level debug` on Windows).
+- `--playback-feedback <text>` (also `--playback-feedback=<text>`) sends a non-empty text string through the playback-feedback route used for recording/playback prompts. For example: `SubMiner.AppImage --playback-feedback "your feedback"`.
 
 ### Windows mpv Shortcut