feat(tracking): store secondary subtitle text and source path in occurrence data

- Add secondary_text column to imm_subtitle_lines with migration
- Pass currentSecondarySubText through recordSubtitleLine flow
- Include secondaryText and sourcePath in word/kanji occurrence queries
- Update all type interfaces (backend + frontend)

src/core/services/__tests__/stats-server.test.ts

@@ -54,6 +54,7 @@ const VOCABULARY_STATS = [
     pos3: null,
     frequency: 100,
     frequencyRank: 42,
+    animeCount: 2,
     firstSeen: Date.now(),
     lastSeen: Date.now(),
   },
@@ -75,6 +76,8 @@ const OCCURRENCES = [
     animeTitle: 'Little Witch Academia',
     videoId: 2,
     videoTitle: 'Episode 4',
+    sourcePath: '/media/anime/lwa/ep04.mkv',
+    secondaryText: null,
     sessionId: 3,
     lineIndex: 7,
     segmentStartMs: 12_000,

src/core/services/immersion-tracker-service.ts

@@ -612,6 +612,7 @@ export class ImmersionTrackerService {
     startSec: number,
     endSec: number,
     tokens?: MergedToken[] | null,
+    secondaryText?: string | null,
   ): void {
     if (!this.sessionState || !text.trim()) return;
     const cleaned = normalizeText(text);
@@ -692,6 +693,7 @@ export class ImmersionTrackerService {
       segmentStartMs: secToMs(startSec),
       segmentEndMs: secToMs(endSec),
       text: cleaned,
+      secondaryText: secondaryText ?? null,
       wordOccurrences: Array.from(wordOccurrences.values()),
       kanjiOccurrences: Array.from(kanjiCounts.entries()).map(([kanji, occurrenceCount]) => ({
         kanji,

src/core/services/immersion-tracker/query.ts

@@ -221,11 +221,17 @@ export function getVocabularyStats(
     ? `WHERE (part_of_speech IS NULL OR part_of_speech NOT IN (${placeholders}))`
     : '';
   const stmt = db.prepare(`
-    SELECT id AS wordId, headword, word, reading,
-      part_of_speech AS partOfSpeech, pos1, pos2, pos3,
-      frequency, frequency_rank AS frequencyRank,
-      first_seen AS firstSeen, last_seen AS lastSeen
-    FROM imm_words ${whereClause} ORDER BY frequency DESC LIMIT ?
+    SELECT w.id AS wordId, w.headword, w.word, w.reading,
+      w.part_of_speech AS partOfSpeech, w.pos1, w.pos2, w.pos3,
+      w.frequency, w.frequency_rank AS frequencyRank,
+      w.first_seen AS firstSeen, w.last_seen AS lastSeen,
+      COUNT(DISTINCT sl.anime_id) AS animeCount
+    FROM imm_words w
+    LEFT JOIN imm_word_line_occurrences o ON o.word_id = w.id
+    LEFT JOIN imm_subtitle_lines sl ON sl.line_id = o.line_id AND sl.anime_id IS NOT NULL
+    ${whereClause ? whereClause.replace('part_of_speech', 'w.part_of_speech') : ''}
+    GROUP BY w.id
+    ORDER BY w.frequency DESC LIMIT ?
   `);
   const params = hasExclude ? [...excludePos, limit] : [limit];
   return stmt.all(...params) as VocabularyStatsRow[];
@@ -528,6 +534,8 @@ export function getWordOccurrences(
           a.canonical_title AS animeTitle,
           l.video_id AS videoId,
           v.canonical_title AS videoTitle,
+          v.source_path AS sourcePath,
+          l.secondary_text AS secondaryText,
           l.session_id AS sessionId,
           l.line_index AS lineIndex,
           l.segment_start_ms AS segmentStartMs,
@@ -562,6 +570,8 @@ export function getKanjiOccurrences(
           a.canonical_title AS animeTitle,
           l.video_id AS videoId,
           v.canonical_title AS videoTitle,
+          v.source_path AS sourcePath,
+          l.secondary_text AS secondaryText,
           l.session_id AS sessionId,
           l.line_index AS lineIndex,
           l.segment_start_ms AS segmentStartMs,

src/core/services/immersion-tracker/storage.ts

@@ -505,6 +505,7 @@ export function ensureSchema(db: DatabaseSync): void {
       segment_start_ms INTEGER,
       segment_end_ms INTEGER,
       text TEXT NOT NULL,
+      secondary_text TEXT,
       CREATED_DATE INTEGER,
       LAST_UPDATE_DATE INTEGER,
       FOREIGN KEY(session_id) REFERENCES imm_sessions(session_id) ON DELETE CASCADE,
@@ -644,6 +645,7 @@ export function ensureSchema(db: DatabaseSync): void {
         segment_start_ms INTEGER,
         segment_end_ms INTEGER,
         text TEXT NOT NULL,
+        secondary_text TEXT,
         CREATED_DATE INTEGER,
         LAST_UPDATE_DATE INTEGER,
         FOREIGN KEY(session_id) REFERENCES imm_sessions(session_id) ON DELETE CASCADE,
@@ -679,6 +681,10 @@ export function ensureSchema(db: DatabaseSync): void {
     addColumnIfMissing(db, 'imm_words', 'frequency_rank', 'INTEGER');
   }
 
+  if (currentVersion?.schema_version && currentVersion.schema_version < 10) {
+    addColumnIfMissing(db, 'imm_subtitle_lines', 'secondary_text', 'TEXT');
+  }
+
   db.exec(`
     CREATE INDEX IF NOT EXISTS idx_anime_normalized_title
     ON imm_anime(normalized_title_key)
@@ -820,9 +826,9 @@ export function createTrackerPreparedStatements(db: DatabaseSync): TrackerPrepar
     subtitleLineInsertStmt: db.prepare(`
       INSERT INTO imm_subtitle_lines (
         session_id, event_id, video_id, anime_id, line_index, segment_start_ms,
-        segment_end_ms, text, CREATED_DATE, LAST_UPDATE_DATE
+        segment_end_ms, text, secondary_text, CREATED_DATE, LAST_UPDATE_DATE
       ) VALUES (
-        ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
+        ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
       )
     `),
     wordIdSelectStmt: db.prepare(`
@@ -958,6 +964,7 @@ export function executeQueuedWrite(write: QueuedWrite, stmts: TrackerPreparedSta
       write.segmentStartMs ?? null,
       write.segmentEndMs ?? null,
       write.text,
+      write.secondaryText ?? null,
       Date.now(),
       Date.now(),
     );

src/core/services/immersion-tracker/types.ts

@@ -1,4 +1,4 @@
-export const SCHEMA_VERSION = 9;
+export const SCHEMA_VERSION = 10;
 export const DEFAULT_QUEUE_CAP = 1_000;
 export const DEFAULT_BATCH_SIZE = 25;
 export const DEFAULT_FLUSH_INTERVAL_MS = 500;
@@ -163,6 +163,7 @@ interface QueuedSubtitleLineWrite {
   segmentStartMs: number | null;
   segmentEndMs: number | null;
   text: string;
+  secondaryText?: string | null;
   wordOccurrences: CountedWordOccurrence[];
   kanjiOccurrences: CountedKanjiOccurrence[];
   firstSeen: number;
@@ -243,6 +244,7 @@ export interface VocabularyStatsRow {
   pos3: string | null;
   frequency: number;
   frequencyRank: number | null;
+  animeCount: number;
   firstSeen: number;
   lastSeen: number;
 }
@@ -282,6 +284,8 @@ export interface WordOccurrenceRow {
   animeTitle: string | null;
   videoId: number;
   videoTitle: string;
+  sourcePath: string | null;
+  secondaryText: string | null;
   sessionId: number;
   lineIndex: number;
   segmentStartMs: number | null;
@@ -295,6 +299,8 @@ export interface KanjiOccurrenceRow {
   animeTitle: string | null;
   videoId: number;
   videoTitle: string;
+  sourcePath: string | null;
+  secondaryText: string | null;
   sessionId: number;
   lineIndex: number;
   segmentStartMs: number | null;

src/main/runtime/mpv-main-event-main-deps.ts

@@ -4,13 +4,14 @@ export function createBuildBindMpvMainEventHandlersMainDepsHandler(deps: {
   appState: {
     initialArgs?: { jellyfinPlay?: unknown } | null;
     overlayRuntimeInitialized: boolean;
-    mpvClient: { connected?: boolean } | null;
+    mpvClient: { connected?: boolean; currentSecondarySubText?: string } | null;
     immersionTracker: {
       recordSubtitleLine?: (
         text: string,
         start: number,
         end: number,
         tokens?: MergedToken[] | null,
+        secondaryText?: string | null,
       ) => void;
       handleMediaTitleUpdate?: (title: string) => void;
       recordPlaybackPosition?: (time: number) => void;
@@ -70,25 +71,26 @@ export function createBuildBindMpvMainEventHandlersMainDepsHandler(deps: {
       if (!tracker?.recordSubtitleLine) {
         return;
       }
+      const secondaryText = deps.appState.mpvClient?.currentSecondarySubText || null;
       const cachedTokens =
         deps.appState.currentSubtitleData?.text === text
           ? deps.appState.currentSubtitleData.tokens
           : null;
       if (cachedTokens) {
-        tracker.recordSubtitleLine(text, start, end, cachedTokens);
+        tracker.recordSubtitleLine(text, start, end, cachedTokens, secondaryText);
         return;
       }
       if (!deps.tokenizeSubtitleForImmersion) {
-        tracker.recordSubtitleLine(text, start, end, null);
+        tracker.recordSubtitleLine(text, start, end, null, secondaryText);
         return;
       }
       void deps
         .tokenizeSubtitleForImmersion(text)
         .then((payload) => {
-          tracker.recordSubtitleLine?.(text, start, end, payload?.tokens ?? null);
+          tracker.recordSubtitleLine?.(text, start, end, payload?.tokens ?? null, secondaryText);
         })
         .catch(() => {
-          tracker.recordSubtitleLine?.(text, start, end, null);
+          tracker.recordSubtitleLine?.(text, start, end, null, secondaryText);
         });
     },
     hasSubtitleTimingTracker: () => Boolean(deps.appState.subtitleTimingTracker),

stats/src/types/stats.ts

@@ -59,6 +59,7 @@ export interface VocabularyEntry {
   pos3: string | null;
   frequency: number;
   frequencyRank: number | null;
+  animeCount: number;
   firstSeen: number;
   lastSeen: number;
 }
@@ -76,6 +77,8 @@ export interface VocabularyOccurrenceEntry {
   animeTitle: string | null;
   videoId: number;
   videoTitle: string;
+  sourcePath: string | null;
+  secondaryText: string | null;
   sessionId: number;
   lineIndex: number;
   segmentStartMs: number | null;