migrate subtitle style config to CSS declaration shape

- Flat style keys (fontFamily, fontSize, hoverTokenColor, etc.) consolidated into subtitleStyle.css, secondary.css, and subtitleSidebar.css objects
- Hover token colors migrated to --subtitle-hover-token-color CSS custom properties
- Plugin app-ping now checks result.status (0=running, 1=stopped) to avoid treating transient failures as stopped
- Note-fields note type picker defaults to configured deck's note type before falling back to Kiku/Lapis
- New migration for legacy ankiConnect N+1 config paths

src/main.ts

@@ -4226,6 +4226,11 @@ const {
       getKnownWordMatchMode: () =>
         appState.ankiIntegration?.getKnownWordMatchMode() ??
         getResolvedConfig().ankiConnect.knownWords.matchMode,
+      getKnownWordsEnabled: () =>
+        getRuntimeBooleanOption(
+          'subtitle.annotation.knownWords.highlightEnabled',
+          getResolvedConfig().ankiConnect.knownWords.highlightEnabled,
+        ),
       getNPlusOneEnabled: () =>
         getRuntimeBooleanOption(
           'subtitle.annotation.nPlusOne',
@@ -5232,12 +5237,17 @@ const { registerIpcRuntimeHandlers } = composeIpcRuntimeHandlers({
       openYomitanSettings: () => openYomitanSettings(),
       quitApp: () => requestAppQuit(),
       toggleVisibleOverlay: () => toggleVisibleOverlay(),
-      tokenizeCurrentSubtitle: async () =>
-        resolveCurrentSubtitleForRenderer({
+      tokenizeCurrentSubtitle: async () => {
+        const tokenizeSubtitleForCurrent = tokenizeSubtitleDeferred;
+        return resolveCurrentSubtitleForRenderer({
           currentSubText: appState.currentSubText,
           currentSubtitleData: appState.currentSubtitleData,
           withCurrentSubtitleTiming: (payload) => withCurrentSubtitleTiming(payload),
-        }),
+          tokenizeSubtitle: tokenizeSubtitleForCurrent
+            ? (text) => tokenizeSubtitleForCurrent(text)
+            : undefined,
+        });
+      },
       getCurrentSubtitleRaw: () => appState.currentSubText,
       getCurrentSubtitleAss: () => appState.currentSubAssText,
       getSubtitleSidebarSnapshot: async () => {