feat: add Codex OAuth login and fix channel config display

- Add OpenAI Codex Device Code Flow login (backend polling + frontend modal)
- Codex provider integrated into preset dropdown (hides URL/API key fields)
- Sync provider model catalogs with Hermes system
- Fix channel config not displaying on first visit (wait for data load)
- Fix sidebar model list not refreshing after adding provider
- Add autocomplete="off" to API key input to prevent browser autofill

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/client/src/i18n/locales/en.ts

@@ -17,6 +17,7 @@ export default {
     delete: 'Delete',
     edit: 'Edit',
     save: 'Save',
+    retry: 'Retry',
     saved: 'Saved',
     update: 'Update',
     create: 'Create',
@@ -195,6 +196,12 @@ export default {
     providerDeleted: 'Provider deleted',
     deleteProvider: 'Delete Provider',
     deleteConfirm: 'Are you sure you want to delete "{name}"?',
+    codexLoginTitle: 'OpenAI Codex Login',
+    codexWaiting: 'Enter this code at the authorization page to complete login:',
+    codexCopyCode: 'Code copied',
+    codexOpenLink: 'Open authorization page',
+    codexApproved: 'Login successful',
+    codexExpired: 'Authorization expired. Please try again.',
     noProviders: 'No providers found. Add a custom provider to get started.',
     builtIn: 'Built-in',
     customType: 'Custom',