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/config/definitions/defaults-integrations.ts

@@ -69,6 +69,7 @@ export const INTEGRATIONS_DEFAULT_CONFIG: Pick<
       autoUpdateNewCards: true,
     },
     nPlusOne: {
+      enabled: false,
       minSentenceWords: 3,
     },
     metadata: {
@@ -76,7 +77,7 @@ export const INTEGRATIONS_DEFAULT_CONFIG: Pick<
     },
     isLapis: {
       enabled: false,
-      sentenceCardModel: 'Japanese sentences',
+      sentenceCardModel: 'Lapis',
     },
     isKiku: {
       enabled: false,

src/config/definitions/defaults-subtitle.ts

@@ -3,6 +3,7 @@ import { ResolvedConfig } from '../../types/config';
 export const SUBTITLE_DEFAULT_CONFIG: Pick<ResolvedConfig, 'subtitleStyle' | 'subtitleSidebar'> = {
   subtitleStyle: {
     primaryDefaultMode: 'visible',
+    css: {},
     enableJlpt: false,
     preserveLineBreaks: false,
     autoPauseVideoOnHover: true,
@@ -43,6 +44,7 @@ export const SUBTITLE_DEFAULT_CONFIG: Pick<ResolvedConfig, 'subtitleStyle' | 'su
       bandedColors: ['#ed8796', '#f5a97f', '#f9e2af', '#8bd5ca', '#8aadf4'],
     },
     secondary: {
+      css: {},
       fontFamily: 'Inter, Noto Sans, Helvetica Neue, sans-serif',
       fontSize: 24,
       fontColor: '#cad3f5',

src/config/definitions/options-integrations.ts

@@ -278,6 +278,12 @@ export function buildIntegrationConfigOptionRegistry(
       defaultValue: defaultConfig.ankiConnect.knownWords.addMinedWordsImmediately,
       description: 'Immediately append newly mined card words into the known-word cache.',
     },
+    {
+      path: 'ankiConnect.nPlusOne.enabled',
+      kind: 'boolean',
+      defaultValue: defaultConfig.ankiConnect.nPlusOne.enabled,
+      description: 'Enable N+1 subtitle highlighting (highlights the one unknown word in a sentence). Requires known-word cache data.',
+    },
     {
       path: 'ankiConnect.nPlusOne.minSentenceWords',
       kind: 'number',

src/config/definitions/options-subtitle.ts

@@ -13,6 +13,20 @@ export function buildSubtitleConfigOptionRegistry(
       description:
         'Default primary subtitle bar visibility mode. hidden hides it, visible shows it, hover reveals it on hover.',
     },
+    {
+      path: 'subtitleStyle.css',
+      kind: 'object',
+      defaultValue: defaultConfig.subtitleStyle.css,
+      description:
+        'CSS declaration object applied to primary subtitles after normal subtitle style defaults.',
+    },
+    {
+      path: 'subtitleStyle.secondary.css',
+      kind: 'object',
+      defaultValue: defaultConfig.subtitleStyle.secondary.css,
+      description:
+        'CSS declaration object applied to secondary subtitles after normal subtitle style defaults.',
+    },
     {
       path: 'subtitleStyle.enableJlpt',
       kind: 'boolean',