fix(tokenizer): block kanji reading collisions and name/generic length t

- Add allowReadingOnlyMatch:false to kanji token known-word lookups so 渓谷/けいこく no longer matches a mined 警告/けいこく card via reading-only index
- Greedy name pre-pass yields when a strictly longer generic word starts at the same position (空 no longer splits 空気; ties still go to the name)

src/main.ts

@@ -4652,7 +4652,8 @@ const {
       setYomitanParserInitPromise: (promise) => {
         appState.yomitanParserInitPromise = promise;
       },
-      isKnownWord: (text, reading) => Boolean(appState.ankiIntegration?.isKnownWord(text, reading)),
+      isKnownWord: (text, reading, options) =>
+        Boolean(appState.ankiIntegration?.isKnownWord(text, reading, options)),
       recordLookup: (hit) => {
         ensureImmersionTrackerStarted();
         appState.immersionTracker?.recordLookup(hit);