feat(yomitan): add read-only external profile support for shared dictionaries (#18)

docs-site/changelog.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## v0.6.2 (2026-03-12)
+- Added `yomitan.externalProfilePath` so SubMiner can reuse another Electron app's Yomitan profile in read-only mode.
+- Reused external Yomitan dictionaries/settings without writing back to that profile.
+- Let launcher-managed playback honor external Yomitan config instead of forcing first-run setup.
+- Seeded `config.jsonc` even when the default config directory already exists.
+- Let first-run setup complete without internal dictionaries while external Yomitan is configured, then require an internal dictionary again only if that external profile is later removed.
+
 ## v0.6.0 (2026-03-12)
 - Added Chrome Gamepad API controller support for keyboard-only overlay mode.
 - Added configurable controller bindings for lookup, mining, popup navigation, Yomitan audio, mpv pause, and d-pad fallback navigation.

docs-site/character-dictionary.md

@@ -62,6 +62,10 @@ Character dictionary sync is disabled by default. To turn it on:
 The first sync for a media title takes a few seconds while character data and portraits are fetched from AniList. Subsequent launches reuse the cached snapshot.
 :::
 
+::: warning
+If `yomitan.externalProfilePath` is set, SubMiner switches to read-only external-profile mode. In that mode SubMiner can reuse another app's installed Yomitan dictionaries/settings, but SubMiner's own character-dictionary features are fully disabled.
+:::
+
 ## Name Generation
 
 A single character produces many searchable terms so that names are recognized regardless of how they appear in dialogue. SubMiner generates variants for:

docs-site/configuration.md

@@ -113,6 +113,7 @@ The configuration file includes several main sections:
 - [**Jimaku**](#jimaku) - Jimaku API configuration and defaults
 - [**Auto Subtitle Sync**](#auto-subtitle-sync) - Sync current subtitle with `alass`/`ffsubsync`
 - [**AniList**](#anilist) - Optional post-watch progress updates
+- [**Yomitan**](#yomitan) - Reuse an external read-only Yomitan profile via `yomitan.externalProfilePath`
 - [**Jellyfin**](#jellyfin) - Optional Jellyfin auth, library listing, and playback launch
 - [**Discord Rich Presence**](#discord-rich-presence) - Optional Discord activity card updates
 - [**Immersion Tracking**](#immersion-tracking) - Track subtitle sessions and mining activity in SQLite
@@ -1017,6 +1018,33 @@ AniList CLI commands:
 - `--anilist-setup`: open AniList setup/auth flow helper window.
 - `--anilist-retry-queue`: process one ready retry queue item immediately.
 
+### Yomitan
+
+SubMiner normally uses its bundled Yomitan profile under the app config directory. If you want to reuse dictionaries and profile settings from another Electron app, point SubMiner at that app's Yomitan Electron profile in read-only mode.
+
+For GameSentenceMiner on Linux, the default overlay profile path is typically `~/.config/gsm_overlay`.
+
+```json
+{
+  "yomitan": {
+    "externalProfilePath": "/home/you/.config/gsm_overlay"
+  }
+}
+```
+
+| Option                | Values      | Description                                                                                                                           |
+| --------------------- | ----------- | ------------------------------------------------------------------------------------------------------------------------------------- |
+| `externalProfilePath` | string path | Optional absolute path, or a path beginning with `~` (expanded to your home directory), to another app's Yomitan Electron profile. SubMiner loads that profile read-only and reuses its dictionaries/settings. |
+
+External-profile mode behavior:
+
+- SubMiner uses the external profile's Yomitan extension/session instead of its local copy.
+- SubMiner reads the external profile's currently active Yomitan profile selection and installed dictionaries.
+- SubMiner does not open its own Yomitan settings window in this mode.
+- SubMiner does not import, delete, or update dictionaries/settings in the external profile.
+- SubMiner character-dictionary features are fully disabled in this mode, including auto-sync, manual generation, and subtitle-side character-dictionary annotations.
+- First-run setup does not require any internal dictionaries while this mode is configured. If you later launch without `yomitan.externalProfilePath`, setup will require at least one internal Yomitan dictionary unless SubMiner already finds one.
+
 ### Jellyfin
 
 Jellyfin integration is optional and disabled by default. When enabled, SubMiner can authenticate, list libraries/items, and resolve direct/transcoded playback URLs for mpv launch.

docs-site/public/config.example.jsonc

@@ -385,6 +385,17 @@
     } // Character dictionary setting.
   }, // Anilist API credentials and update behavior.
 
+  // ==========================================
+  // Yomitan
+  // Optional external Yomitan profile integration.
+  // Setting yomitan.externalProfilePath switches SubMiner to read-only external-profile mode.
+  // For GameSentenceMiner on Linux, the default overlay profile is usually ~/.config/gsm_overlay.
+  // In external-profile mode SubMiner will not import, delete, or modify Yomitan dictionaries/settings.
+  // ==========================================
+  "yomitan": {
+    "externalProfilePath": "" // Optional external Yomitan Electron profile path to use in read-only mode for shared dictionaries/settings. Example: ~/.config/gsm_overlay
+  }, // Optional external Yomitan profile integration.
+
   // ==========================================
   // Jellyfin
   // Optional Jellyfin integration for auth, browsing, and playback launch.

docs-site/troubleshooting.md

@@ -182,6 +182,7 @@ If you installed from the AppImage and see this error, the package may be incomp
 
 - Verify Yomitan loaded successfully — check the terminal output for "Loaded Yomitan extension".
 - Yomitan requires dictionaries to be installed. Open Yomitan settings (`Alt+Shift+Y` or `SubMiner.AppImage --settings`) and confirm at least one dictionary is imported.
+- If `yomitan.externalProfilePath` is set, import/check dictionaries in the external app/profile instead. SubMiner treats that profile as read-only and does not open its own Yomitan settings window.
 - If the overlay shows subtitles but words are not clickable, the tokenizer may have failed. See the MeCab section below.
 
 ## MeCab / Tokenization