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/settings/settings-anki-controls.test.ts

@@ -0,0 +1,31 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import * as ankiControls from './settings-anki-controls';
+
+test('note field model preference chooses Kiku before configured Lapis default', () => {
+  assert.equal(
+    ankiControls.selectPreferredNoteFieldModelName(['Lapis Morph', 'Kiku'], 'Lapis Morph'),
+    'Kiku',
+  );
+});
+
+test('note field model preference falls back to Lapis when Kiku is unavailable', () => {
+  assert.equal(
+    ankiControls.selectPreferredNoteFieldModelName(['Mining', 'Lapis Morph'], 'Lapis Morph'),
+    'Lapis Morph',
+  );
+});
+
+test('note field model preference does not treat partial Kiku matches as Kiku', () => {
+  assert.equal(
+    ankiControls.selectPreferredNoteFieldModelName(['Kikuchi', 'Lapis Morph'], 'Lapis Morph'),
+    'Lapis Morph',
+  );
+});
+
+test('note field model preference stays blank when no Kiku or Lapis note type exists', () => {
+  assert.equal(
+    ankiControls.selectPreferredNoteFieldModelName(['Basic', 'Mining'], 'Lapis Morph'),
+    '',
+  );
+});