feat(config): reorganize settings window and move annotation colors to subtitleStyle

- Reorganize Configuration window into Appearance, Behavior, Anki, Input, and Integration sections
- Add AnkiConnect-backed deck, note-type, and field pickers in the Anki section
- Add click-to-learn keybinding controls
- Move known-word and N+1 highlight colors to subtitleStyle.knownWordColor / subtitleStyle.nPlusOneColor; legacy ankiConnect.knownWords.color and ankiConnect.nPlusOne.nPlusOne keys still accepted with deprecation warnings
- Add deckNames, modelNames, modelFieldNames, and fieldNamesForDeck methods to AnkiConnectClient
- Mark discordPresence.presenceStyle as an enum in the config registry

src/shared/ipc/contracts.ts

@@ -101,6 +101,10 @@ export const IPC_CHANNELS = {
     saveConfigSettingsPatch: 'config:save-settings-patch',
     openConfigSettingsFile: 'config:open-settings-file',
     openConfigSettingsWindow: 'config:open-settings-window',
+    getConfigSettingsAnkiDeckNames: 'config-settings:anki-deck-names',
+    getConfigSettingsAnkiDeckFieldNames: 'config-settings:anki-deck-field-names',
+    getConfigSettingsAnkiModelNames: 'config-settings:anki-model-names',
+    getConfigSettingsAnkiModelFieldNames: 'config-settings:anki-model-field-names',
   },
   event: {
     subtitleSet: 'subtitle:set',