chore: update FUN-Codex and FUN-Claude provider models (#522)

FUN-Codex: add GPT models (5.5, 5.4, 5.4-mini, 5.3-codex, 5.3-codex-spark)
FUN-Claude: replace with actual Claude models from API (opus-4-7 down to 3-5-haiku)

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

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

@@ -70,6 +70,7 @@ export default {
   sidebar: {
     chat: 'Chat',
     search: 'Search',
+    apiRelay: 'API Relay',
     history: 'History',
     jobs: 'Jobs',
     models: 'Models',
@@ -331,6 +332,7 @@ export default {
     custom: 'Custom',
     selectProvider: 'Select Provider',
     chooseProvider: 'Choose a provider...',
+    getApiKey: 'Get API Key',
     name: 'Name',
     autoGeneratedName: 'Auto-generated from Base URL',
     baseUrl: 'Base URL',