feat(config): add subtitle CSS editor, nPlusOne.enabled flag, and fix se

- subtitleStyle.css / subtitleStyle.secondary.css replace flat style fields in the settings window
- ankiConnect.nPlusOne.enabled gates known-word cache independently of knownWords.highlightEnabled
- Settings search now covers all categories, narrows on multi-word terms, and hides editor-owned fields
- Default note-type picker to Kiku then Lapis; rename isLapis.sentenceCardModel default to "Lapis"

src/anki-integration/runtime.ts

@@ -157,7 +157,8 @@ export class AnkiIntegrationRuntime {
   }
 
   applyRuntimeConfigPatch(patch: Partial<AnkiConnectConfig>): void {
-    const wasKnownWordCacheEnabled = this.config.knownWords?.highlightEnabled === true;
+    const wasKnownWordCacheEnabled =
+      this.config.knownWords?.highlightEnabled === true || this.config.nPlusOne?.enabled === true;
     const previousKnownWordCacheConfig = wasKnownWordCacheEnabled
       ? this.getKnownWordCacheLifecycleConfig(this.config)
       : null;
@@ -207,7 +208,8 @@ export class AnkiIntegrationRuntime {
     };
     this.config = normalizeAnkiIntegrationConfig(mergedConfig);
     this.deps.onConfigChanged?.(this.config);
-    const nextKnownWordCacheEnabled = this.config.knownWords?.highlightEnabled === true;
+    const nextKnownWordCacheEnabled =
+      this.config.knownWords?.highlightEnabled === true || this.config.nPlusOne?.enabled === true;
 
     if (wasKnownWordCacheEnabled && !nextKnownWordCacheEnabled) {
       if (this.started) {