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/runtime/subtitle-tokenization-main-deps.ts

@@ -37,8 +37,8 @@ export function createBuildTokenizerDepsMainHandler(deps: TokenizerMainDeps) {
     getYomitanParserInitPromise: () => deps.getYomitanParserInitPromise(),
     setYomitanParserInitPromise: (promise: Promise<boolean> | null) =>
       deps.setYomitanParserInitPromise(promise),
-    isKnownWord: (text: string, reading?: string) => {
-      const hit = deps.isKnownWord(text, reading);
+    isKnownWord: (text, reading, options) => {
+      const hit = deps.isKnownWord(text, reading, options);
       deps.recordLookup(hit);
       return hit;
     },