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"

changes/config-settings-search.md

@@ -0,0 +1,4 @@
+type: fixed
+area: config
+
+- Fixed Configuration window search so it searches across all categories, narrows on multi-word terms, hides settings owned by richer editors, and no longer shows the Open File button.

changes/note-fields-default-note-type.md

@@ -0,0 +1,4 @@
+type: fixed
+area: config
+
+- Defaulted the note-fields note type picker to `Kiku` when available, then Lapis note types, otherwise leaving it blank for manual selection.

changes/subtitle-css-appearance-editor.md

@@ -0,0 +1,4 @@
+type: changed
+area: config
+
+- Config: Primary and secondary subtitle appearance now use color controls plus CSS declaration editors, saved as `subtitleStyle.css` and `subtitleStyle.secondary.css`.