feat(codex): add AiHubMix provider and enhance configuration UX

- Add new AiHubMix provider preset with dual endpoints
- Fix AnyRouter base_url inconsistency (add /v1 suffix)
- Add configuration wizard shortcut link for Codex custom mode
- Improve accessibility with aria-label for wizard button
- Remove unused isCustomMode prop from CodexConfigEditor
- Add internationalization for new UI elements (zh/en)

src/i18n/locales/en.json

@@ -226,6 +226,7 @@
     "manageAndTest": "Manage & Test",
     "configContent": "Config Content",
     "useConfigWizard": "Use Configuration Wizard",
+    "openConfigWizard": "Open configuration wizard",
     "manualConfig": "Manually configure provider, requires complete configuration, or",
     "officialNoApiKey": "Official login does not require API Key, save directly",
     "codexOfficialNoApiKey": "Official does not require API Key, save directly",

src/i18n/locales/zh.json

@@ -226,6 +226,7 @@
     "manageAndTest": "管理与测速",
     "configContent": "配置内容",
     "useConfigWizard": "使用配置向导",
+    "openConfigWizard": "打开配置向导",
     "manualConfig": "手动配置供应商，需要填写完整的配置信息，或者",
     "officialNoApiKey": "官方登录无需填写 API Key，直接保存即可",
     "codexOfficialNoApiKey": "官方无需填写 API Key，直接保存即可",