feat(tokenizer): use Yomitan word classes for subtitle POS filtering (#57)

* feat(tokenizer): use Yomitan word classes for subtitle POS filtering

- Carry matched headword wordClasses from termsFind into YomitanScanToken
- Map recognized Yomitan wordClasses to SubMiner coarse POS before annotation
- MeCab enrichment now fills only missing POS fields, preserving existing coarse pos1
- Exclude standalone grammar particles, して helper fragments, and single-kana surfaces from annotations
- Respect source-text punctuation gaps when counting N+1 sentence words
- Preserve known-word highlight on excluded kanji-containing tokens
- Add backlog tasks 304 (N+1 boundary bug) and 305 (wordClasses POS, done)

* fix(tokenizer): preserve annotation and enrichment behavior

* fix: restore jlpt subtitle underlines

* fix: exclude kana-only n+1 targets

* fix: refresh overlay on Hyprland fullscreen

* fix: address fullscreen and n-plus-one review notes

* fix: address CodeRabbit review comments

* fix: accept modified digits for multi-line sentence mining

* Cancel pending Linux MPV fullscreen overlay refresh bursts

- return a cancel handle from the Linux refresh burst scheduler
- clear pending refresh bursts when overlays hide or windows close
- tighten the burst test polling to wait for the async refresh

* fix: suppress N+1 for kana-only candidates and fix minSentenceWords coun

- Treat kana-only tokens with surrounding subtitle punctuation (…, ―, etc.) as kana-only so they are not promoted to N+1 targets
- Exclude unknown tokens filtered from N+1 targeting from the minSentenceWords count so filtered kana-only unknowns cannot satisfy sentence length threshold
- Add regression tests for kana-only candidate suppression and filtered-unknown padding cases

* Suppress subtitle annotations for grammar fragments

- Hide annotation metadata for auxiliary inflection and ja-nai endings
- Preserve lexical `くれる` forms and add regression coverage

* Fix kana-only N+1 tokenizer regression test

- Use a pure-kana fixture for the subtitle token N+1 case
- Update task notes for the latest CodeRabbit follow-up

* Fix managed playback exit and tokenizer grammar splits

- Ignore background stats daemons during regular app startup
- Split standalone grammar endings before applying annotations
- Clear helper-span annotations for auxiliary-only tokens

* fix: refresh current subtitle after known-word mining

* fix: suppress sigh interjection annotations

* fix: preserve jlpt underline color after lookup

* Replace grammar-ending permutations with shared matcher; preserve word a

- Extract `grammar-ending.ts` with `isStandaloneGrammarEndingText` / `isSubtitleGrammarEndingText` pattern matchers
- Replace `STANDALONE_GRAMMAR_ENDINGS` set in parser-selection-stage with shared matcher
- Replace generated phrase sets in subtitle-annotation-filter with shared matcher
- Remove stale duplicate subtitle-exclusion constants and helpers from annotation-stage
- Manual clipboard card updates now write only to the sentence audio field, leaving word/expression audio untouched

* fix: CI changelog, annotation options threading, and Jellyfin quit

- Add `type: fixed` / `area:` frontmatter to `changes/319` to pass `changelog:lint`
- Thread `TokenizerAnnotationOptions` through `stripSubtitleAnnotationMetadata` so `sourceText` is honored
- Include `jellyfinPlay` in `shouldQuitOnDisconnectWhenOverlayRuntimeInitialized` predicate
- Make mouse test `elementFromPoint` stubs coordinate-sensitive
- Make Lua test `.tmp` mkdir portable on Windows

* Preserve overlay across macOS flaps and mpv playlist changes

- keep visible overlays alive during transient macOS tracker loss
- reuse the running mpv overlay path on playlist navigation
- update regression coverage and changelog fragments

* fix: restore stats daemon deferral

* fix: keep subtitle prefetch alive after cache hits

* Fix JLPT underline color drift and AniList skipped-threshold sync

- Replace JLPT `text-decoration` underlines with `border-bottom` so Chromium selection/hover cannot repaint them to another annotation's color
- Lock JLPT underline color for combined annotation selectors (known, n+1, frequency) and character hover/selection states
- Trigger AniList post-watch check on every mpv time-position update to catch skipped completion thresholds
- Fall back to filename-parser season/episode when guessit omits them

* fix: address coderabbit feedback

* fix: sync AniList after seeked completion

* fix: preserve ordinal frequency annotations

* fix: preserve known highlighting for filtered tokens

* fix: address PR #57 CodeRabbit feedback

- Acquire AniList post-watch in-flight lock before async gating to prevent duplicate writes
- Isolate manual watched mark result from AniList post-watch callback failures
- Report known-word cache clears as mutations during immediate append when state existed
- Add regression tests for each fix

* fix: stop AniList setup reopening on Linux when keyring token exists

- Gate setup success on token persistence: `saveToken` now returns `boolean`; on failure, keeps the setup window open instead of reporting success
- Config reload passes `allowSetupPrompt: false` so playback reloads don't re-open the setup window
- Add regression test for persistence-failure path

* fix: suppress known highlights for subtitle particles

* fix: retry transient AniList safeStorage failures

* fix: hide overlay focus ring

* fix: align Hyprland fullscreen overlays

* fix: restore subtitle playback keybindings

* fix: align Hyprland overlay windows to mpv and stop pinning them

- Force-apply exact Hyprland move/resize/setprop dispatches when bounds are provided
- Stop pinning overlay windows; toggle pin off when Hyprland reports pinned=true
- Compensate stats overlay outer placement for Electron/Wayland content insets
- Make stats overlay window and page opaque so mpv cannot show through transparent insets
- Constrain stats app to h-screen with internal scroll so content covers mpv from y=0
- Lock overlay/stats window titles against page-title-updated events
- Add regression coverage for placement dispatches, inset compensation, and CSS overlay mode

* fix: retain frequency rank for honorific prefix-noun tokens

- Add `shouldAllowHonorificPrefixNounFrequency` to exempt お/ご/御 + noun merged tokens from frequency exclusion
- Add regression test for `ご機嫌` asserting rank 5484 is preserved after MeCab enrichment and annotation
- Close TASK-341

* fix: map openCharacterDictionary session action to --open-character-dict

- Add missing Lua CLI dispatch entry for openCharacterDictionary
- Add regression test for Alt+Meta+A binding and CLI flag forwarding

* fix: keep macOS overlay interactive while mpv remains active

- Overlay no longer hides or becomes click-through during tracker refreshes when mpv is the focused window
- Preserve already-visible overlay when tracker is temporarily not ready but mpv target signal is active
- Add regression tests for active-mpv tracker refresh and transient tracker-not-ready paths

* fix: address coderabbit subtitle follow-ups

* fix: resolve media detail from sessions when lifetime summary is absent

- Change `getMediaDetail` JOIN to LEFT JOIN on `imm_lifetime_media` and fall back to aggregated session metrics when no lifetime row exists
- Add filter `AND (lm.video_id IS NOT NULL OR s.session_id IS NOT NULL)` to keep results valid
- Add regression test covering the session-visible / media-detail-missing mismatch

* fix: address PR-57 CodeRabbit findings and CI failures

- use filtered word counts in media detail session token aggregation
- cancel fullscreen refresh burst on exit via updateLinuxMpvFullscreenOverlayRefreshBurst
- guard Hyprland JSON.parse in try/catch; exclude windowtitle from geometry events
- narrow focus suppression from :focus to :focus-visible
- apply JLPT lock selectors to word-name-match tokens (N1–N5)

* fix: macOS overlay z-order and Yomitan compound token known highlighting

- Release always-on-top when tracked mpv loses foreground on macOS
- Skip visible overlay blur restacking on macOS to avoid covering unrelated windows
- Prefer Yomitan internal parse tokens over fragmented scanner output for known-word decisions
- Add regression tests for both behaviors

* fix: macOS visible-overlay blur no longer invokes Windows-only blur call

- Split win32/darwin branches in handleOverlayWindowBlurred so darwin visible blur returns early without calling onWindowsVisibleOverlayBlur
- Add regression test asserting Windows callback stays inactive on macOS visible overlay blur
- Close TASK-347

src/core/services/anilist/anilist-token-store.test.ts

@@ -38,6 +38,24 @@ function createPassthroughStorage(): SafeStorageLike {
   };
 }
 
+function createTransientUnavailableStorage(): SafeStorageLike & {
+  setAvailable: (next: boolean) => void;
+} {
+  let available = false;
+  return {
+    isEncryptionAvailable: () => available,
+    encryptString: (value: string) => Buffer.from(`enc:${value}`, 'utf-8'),
+    decryptString: (value: Buffer) => {
+      const raw = value.toString('utf-8');
+      return raw.startsWith('enc:') ? raw.slice(4) : raw;
+    },
+    getSelectedStorageBackend: () => (available ? 'gnome_libsecret' : 'unknown'),
+    setAvailable(next: boolean) {
+      available = next;
+    },
+  } as SafeStorageLike & { setAvailable: (next: boolean) => void };
+}
+
 test('anilist token store saves and loads encrypted token', () => {
   const filePath = createTempTokenFile();
   const store = createAnilistTokenStore(filePath, createLogger(), createStorage(true));
@@ -61,6 +79,27 @@ test('anilist token store refuses to persist token when encryption unavailable',
   assert.equal(store.loadToken(), null);
 });
 
+test('anilist token store retries safeStorage after transient encryption unavailability', () => {
+  const filePath = createTempTokenFile();
+  fs.writeFileSync(
+    filePath,
+    JSON.stringify({
+      encryptedToken: Buffer.from('enc:stored-token', 'utf-8').toString('base64'),
+      updatedAt: Date.now(),
+    }),
+    'utf-8',
+  );
+  const storage = createTransientUnavailableStorage();
+  const store = createAnilistTokenStore(filePath, createLogger(), storage);
+
+  assert.equal(store.loadToken(), null);
+  storage.setAvailable(true);
+
+  assert.equal(store.loadToken(), 'stored-token');
+  assert.equal(store.saveToken('new-token'), true);
+  assert.equal(store.loadToken(), 'new-token');
+});
+
 test('anilist token store migrates legacy plaintext to encrypted', () => {
   const filePath = createTempTokenFile();
   fs.writeFileSync(

src/core/services/anilist/anilist-token-store.ts

@@ -69,7 +69,6 @@ export function createAnilistTokenStore(
           `AniList token encryption unavailable: safeStorage.isEncryptionAvailable() is false. ` +
             `Context: ${getSafeStorageDebugContext()}`,
         );
-        safeStorageUsable = false;
         return false;
       }
       const probe = storage.encryptString('__subminer_anilist_probe__');
@@ -77,7 +76,6 @@ export function createAnilistTokenStore(
         notifyUser(
           'AniList token encryption probe failed: safeStorage.encryptString() returned plaintext bytes.',
         );
-        safeStorageUsable = false;
         return false;
       }
       const roundTrip = storage.decryptString(probe);
@@ -85,7 +83,6 @@ export function createAnilistTokenStore(
         notifyUser(
           'AniList token encryption probe failed: encrypt/decrypt round trip returned unexpected content.',
         );
-        safeStorageUsable = false;
         return false;
       }
       safeStorageUsable = true;
@@ -96,7 +93,6 @@ export function createAnilistTokenStore(
         `AniList token encryption unavailable: safeStorage probe threw an error. ` +
           `Context: ${getSafeStorageDebugContext()}`,
       );
-      safeStorageUsable = false;
       return false;
     }
   };

src/core/services/anilist/anilist-updater.test.ts

@@ -22,6 +22,44 @@ test('guessAnilistMediaInfo uses guessit output when available', async () => {
   });
 });
 
+test('guessAnilistMediaInfo fills missing guessit episode from filename parser', async () => {
+  const result = await guessAnilistMediaInfo('/tmp/Guessit Title S01E09.mkv', null, {
+    runGuessit: async () => JSON.stringify({ title: 'Guessit Title' }),
+  });
+  assert.deepEqual(result, {
+    title: 'Guessit Title',
+    season: 1,
+    episode: 9,
+    source: 'guessit',
+  });
+});
+
+test('guessAnilistMediaInfo ignores low-confidence parser details when guessit omits them', async () => {
+  const result = await guessAnilistMediaInfo('/tmp/Season 2/Guessit Title.mkv', null, {
+    runGuessit: async () => JSON.stringify({ title: 'Guessit Title' }),
+  });
+  assert.deepEqual(result, {
+    title: 'Guessit Title',
+    season: null,
+    episode: null,
+    source: 'guessit',
+  });
+});
+
+test('guessAnilistMediaInfo parses Little Witch Academia release filename', async () => {
+  const filename =
+    '/tmp/Little Witch Academia (2017) - S01E02 - 002 - Papiliodia [Bluray-1080p][10bit][h265][AC3 2.0][JA].mkv';
+  const result = await guessAnilistMediaInfo(filename, null, {
+    runGuessit: async () => JSON.stringify({ title: 'Little Witch Academia' }),
+  });
+  assert.deepEqual(result, {
+    title: 'Little Witch Academia',
+    season: 1,
+    episode: 2,
+    source: 'guessit',
+  });
+});
+
 test('guessAnilistMediaInfo falls back to parser when guessit fails', async () => {
   const result = await guessAnilistMediaInfo('/tmp/My Anime S01E03.mkv', null, {
     runGuessit: async () => {
@@ -54,7 +92,7 @@ test('guessAnilistMediaInfo uses basename for guessit input', async () => {
   ]);
   assert.deepEqual(result, {
     title: 'Rascal Does Not Dream of Bunny Girl Senpai',
-    season: null,
+    season: 1,
     episode: 1,
     source: 'guessit',
   });

src/core/services/anilist/anilist-updater.ts

@@ -236,12 +236,14 @@ export async function guessAnilistMediaInfo(
       const season = firstPositiveInteger(parsed.season);
       const year = firstYear(parsed.year);
       if (title) {
+        const fallback = parseMediaInfo(target);
+        const canUseFallbackDetails = fallback.confidence !== 'low';
         return {
           title: buildGuessitTitle(title, alternativeTitle),
           ...(alternativeTitle ? { alternativeTitle } : {}),
           ...(year ? { year } : {}),
-          season,
-          episode,
+          season: season ?? (canUseFallbackDetails ? fallback.season : null),
+          episode: episode ?? (canUseFallbackDetails ? fallback.episode : null),
           source: 'guessit',
         };
       }