feat: add advanced context actions and optional translation

lib/defaults.js

@@ -1,18 +1,13 @@
 // Single source of truth for the settings shape and their defaults.
-// Defaults reproduce the extension's pre-1.1 behaviour exactly: an empty model
-// and both toggles off mean the only URL parameter sent is `q`.
+// Defaults reproduce the extension's pre-1.1 behaviour exactly: both URL toggles off mean the only URL parameter sent is `q`.
 
 export const OPEN_IN_VALUES = ["new-tab", "background-tab", "new-window"];
 
-// An unbounded model string can, on its own, exceed MAX_URL_CHARS in
-// lib/build-url.js — fitToBudget() only ever trims `q`, so a long enough
-// model silently pushes the whole URL over budget and drops the query
-// entirely with no signal to the user. 200 is generous for any real model
-// slug while keeping the URL budget meaningful.
-export const MAX_MODEL_CHARS = 200;
-
 export const DEFAULT_SETTINGS = {
-  model: "",
+  contextMenuMode: "simple",
+  showTranslate: false,
+  translationMode: "ask",
+  translationLanguage: "",
   temporaryChat: false,
   webSearch: false,
   openIn: "new-tab",