feat(frontend): add Codex image bridge toggle

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

frontend/src/i18n/locales/en.ts

@@ -2283,6 +2283,8 @@ export default {
         webSearchEmulation: 'Web Search Emulation',
         webSearchEmulationHint: '⚠️ When enabled, all accounts in this channel\'s Anthropic groups will intercept web_search requests. Use with caution.',
         webSearchEmulationGlobalDisabled: 'Please enable the global switch first in Settings → Gateway → Web Search Emulation',
+        codexImageGenerationBridge: 'Codex Image Generation Bridge',
+        codexImageGenerationBridgeHint: 'When enabled, Codex /responses text requests in OpenAI groups may be automatically given the image_generation tool. Keep off unless the routed accounts support image generation.',
         basicSettings: 'Basic Settings',
         addPlatform: 'Add Platform',
         noPlatforms: 'Click "Add Platform" to start configuring the channel',

frontend/src/i18n/locales/zh.ts

@@ -2360,6 +2360,8 @@ export default {
         webSearchEmulation: 'Web Search 模拟',
         webSearchEmulationHint: '⚠️ 开启后该渠道下所有 Anthropic 分组的账号将自动拦截 web_search 请求，请谨慎操作',
         webSearchEmulationGlobalDisabled: '请先在系统设置 → 网关 → Web Search 模拟中启用全局开关',
+        codexImageGenerationBridge: 'Codex 图片生成桥接',
+        codexImageGenerationBridgeHint: '开启后，OpenAI 分组的 Codex /responses 文本请求可能会被自动注入 image_generation 工具。仅在路由账号支持图片生成时开启。',
         basicSettings: '基础设置',
         addPlatform: '添加平台',
         noPlatforms: '点击"添加平台"开始配置渠道',