Merge origin/main into deferred OpenCode restart branch.

Adopt main's providerAuth helpers (OAuth index preservation, OAuth-only API
key hiding, always-load auth methods) while keeping deferred Apply & Restart
for provider mutations.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/ui/src/lib/i18n/messages/ja.settings.ts

@@ -1116,6 +1116,7 @@ export const settingsDict = {
   'settings.openchamber.keyboardShortcuts.action.open_settings.label': '設定を開く',
   'settings.openchamber.keyboardShortcuts.action.toggle_terminal.label': 'ターミナルドックの切替',
   'settings.openchamber.keyboardShortcuts.action.toggle_terminal_expanded.label': 'ターミナル拡大の切替',
+  'settings.openchamber.keyboardShortcuts.action.add_selection_to_chat.label': '選択範囲をチャットに追加',
   'settings.openchamber.keyboardShortcuts.action.toggle_sidebar.label': 'サイドバーの切替',
   'settings.openchamber.keyboardShortcuts.action.toggle_right_sidebar.label': 'コンテキストパネルの表示切替',
   'settings.openchamber.keyboardShortcuts.action.open_right_sidebar_git.label': 'Git サーフェスを開く',