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/renderer/subtitle-render.test.ts

@@ -220,8 +220,20 @@ function normalizeCssSelector(selector: string): string {
     .trim();
 }
 
-function buildJlptUnderlineSelector(level: number): string {
-  return `#subtitleRoot .word.word-jlpt-n${level}`;
+function buildJlptColorSelector(level: number): string {
+  const higherPriorityClasses = [
+    '.word-known',
+    '.word-n-plus-one',
+    '.word-name-match',
+    '.word-frequency-single',
+    '.word-frequency-band-1',
+    '.word-frequency-band-2',
+    '.word-frequency-band-3',
+    '.word-frequency-band-4',
+    '.word-frequency-band-5',
+  ].join(', ');
+
+  return `#subtitleRoot .word.word-jlpt-n${level}:not(:is(${higherPriorityClasses}))`;
 }
 
 test('computeWordClass preserves known and n+1 classes while adding JLPT classes', () => {
@@ -887,20 +899,32 @@ test('subtitle annotation CSS underlines JLPT tokens without changing token colo
   const cssText = fs.readFileSync(cssPath, 'utf-8');
 
   for (let level = 1; level <= 5; level += 1) {
-    const block = extractClassBlock(cssText, buildJlptUnderlineSelector(level));
-    assert.ok(block.length > 0, `word-jlpt-n${level} class should exist`);
-    assert.doesNotMatch(block, /(?:^|\n)\s*color\s*:/m);
-    assert.doesNotMatch(block, /-webkit-text-fill-color\s*:/);
-    assert.match(block, /text-decoration-line:\s*underline;/);
+    const plainJlptBlock = extractClassBlock(cssText, `#subtitleRoot .word.word-jlpt-n${level}`);
+    // JLPT tagging must never recolor the token text — other annotations own
+    // text color. JLPT also must not use `text-decoration: underline`,
+    // because Chromium repaints text-decoration during ::selection and the
+    // underline would adopt the other annotation's color during a Yomitan
+    // lookup. The underline is drawn by `border-bottom`, which is unaffected
+    // by ::selection and stays locked on the JLPT level color regardless of
+    // popup/selection state.
+    assert.doesNotMatch(plainJlptBlock, /(?:^|\n)\s*color\s*:/m);
+    assert.doesNotMatch(plainJlptBlock, /text-decoration-line:\s*underline;/);
+    assert.doesNotMatch(plainJlptBlock, /text-decoration\s*:[^;]*\bunderline\b/i);
     assert.match(
-      block,
-      new RegExp(`text-decoration-color:\\s*var\\(--subtitle-jlpt-n${level}-color,`),
+      plainJlptBlock,
+      new RegExp(`border-bottom:\\s*2px\\s+solid\\s+var\\(--subtitle-jlpt-n${level}-color,`),
+      `JLPT level must paint a permanent 2px border-bottom in the level color`,
+    );
+
+    // JLPT tagging must communicate level *only* via the underline; it must
+    // never recolor the token text. Other annotations (known, n+1, frequency,
+    // name match) are responsible for token text color.
+    const jlptOnlyColorBlock = extractClassBlock(cssText, buildJlptColorSelector(level));
+    assert.equal(
+      jlptOnlyColorBlock,
+      '',
+      `word-jlpt-n${level} (without other annotations) must not set text color — JLPT only paints the underline`,
     );
-    assert.doesNotMatch(block, /border-bottom\s*:/);
-    assert.doesNotMatch(block, /padding-bottom\s*:/);
-    assert.doesNotMatch(block, /box-decoration-break\s*:/);
-    assert.doesNotMatch(block, /-webkit-box-decoration-break\s*:/);
-    assert.doesNotMatch(block, /text-shadow\s*:/);
   }
 
   for (const selector of [
@@ -1064,6 +1088,55 @@ test('subtitle annotation CSS underlines JLPT tokens without changing token colo
     /-webkit-text-fill-color:\s*var\(--subtitle-hover-token-color,\s*#f4dbd6\)\s*!important;/,
   );
 
+  for (let level = 1; level <= 5; level += 1) {
+    const jlptSelectionLockBlock = extractClassBlock(
+      cssText,
+      `#subtitleRoot .word.word-jlpt-n${level}::selection`,
+    );
+    assert.ok(jlptSelectionLockBlock.length > 0, `word-jlpt-n${level} selection lock should exist`);
+    assert.match(
+      jlptSelectionLockBlock,
+      new RegExp(
+        `text-decoration-color:\\s*var\\(--subtitle-jlpt-n${level}-color,\\s*#[0-9a-f]{6}\\)\\s*!important;`,
+        'i',
+      ),
+    );
+
+    for (const annotationClass of [
+      'word-known',
+      'word-n-plus-one',
+      'word-name-match',
+      'word-frequency-single',
+      'word-frequency-band-2',
+    ]) {
+      const combinedAnnotationBlock = extractClassBlock(
+        cssText,
+        `#subtitleRoot .word.word-jlpt-n${level}.${annotationClass}`,
+      );
+      assert.match(
+        combinedAnnotationBlock,
+        new RegExp(
+          `text-decoration-color:\\s*var\\(--subtitle-jlpt-n${level}-color,\\s*#[0-9a-f]{6}\\)\\s*!important;`,
+          'i',
+        ),
+        `combined JLPT ${annotationClass} selector should lock underline color`,
+      );
+    }
+
+    const jlptCharHoverBlock = extractClassBlock(
+      cssText,
+      `#subtitleRoot .word.word-jlpt-n${level} .c:hover`,
+    );
+    assert.match(
+      jlptCharHoverBlock,
+      new RegExp(
+        `text-decoration-color:\\s*var\\(--subtitle-jlpt-n${level}-color,\\s*#[0-9a-f]{6}\\)\\s*!important;`,
+        'i',
+      ),
+      'JLPT character hover selector should lock underline color',
+    );
+  }
+
   const selectionBlock = extractClassBlock(cssText, '#subtitleRoot::selection');
   assert.match(
     selectionBlock,