feat: add code block line wrap toggle

Adds a chat code block wrap toggle in markdown code block headers
Persists and restores the setting across desktop/web settings
Adds localized labels and OpenChamber search entry for the new option

packages/ui/src/lib/settings/search.ts

@@ -203,6 +203,12 @@ const SETTINGS_SEARCH_ITEMS: readonly SettingsSearchItem[] = [
     titleKey: 'settings.openchamber.visual.field.wideChatLayout',
     keywords: ['layout', 'wide', 'messages'],
   },
+  {
+    id: 'chat.code-block-line-wrap',
+    page: 'chat',
+    titleKey: 'settings.openchamber.visual.field.codeBlockLineWrap',
+    keywords: ['code', 'wrap', 'line wrap', 'markdown'],
+  },
   {
     id: 'chat.inline-assistant-actions',
     page: 'chat',