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/types/anki.ts

@@ -86,6 +86,7 @@ export interface AnkiConnectConfig {
     color?: string;
   };
   nPlusOne?: {
+    enabled?: boolean;
     nPlusOne?: string;
     minSentenceWords?: number;
   };

src/types/config.ts

@@ -214,6 +214,7 @@ export interface ResolvedConfig {
       decks: Record<string, string[]>;
     };
     nPlusOne: {
+      enabled: boolean;
       minSentenceWords: number;
     };
     behavior: {

src/types/settings.ts

@@ -26,7 +26,8 @@ export type ConfigSettingsControl =
   | 'anki-note-type'
   | 'anki-field'
   | 'mpv-keybindings'
-  | 'color-list';
+  | 'color-list'
+  | 'css-declarations';
 
 export type ConfigSettingsRestartBehavior = 'hot-reload' | 'restart';
 
@@ -45,6 +46,7 @@ export interface ConfigSettingsField {
   advanced?: boolean;
   secret?: boolean;
   legacyHidden?: boolean;
+  settingsHidden?: boolean;
 }
 
 export type ConfigSettingsSnapshotValue = unknown;

src/types/subtitle.ts

@@ -70,6 +70,7 @@ export type FrequencyDictionaryMatchMode = 'headword' | 'surface';
 
 export interface SubtitleStyleConfig {
   primaryDefaultMode?: PrimarySubMode;
+  css?: Record<string, string>;
   enableJlpt?: boolean;
   preserveLineBreaks?: boolean;
   autoPauseVideoOnHover?: boolean;
@@ -110,6 +111,7 @@ export interface SubtitleStyleConfig {
     bandedColors?: [string, string, string, string, string];
   };
   secondary?: {
+    css?: Record<string, string>;
     fontFamily?: string;
     fontSize?: number;
     fontColor?: string;