Merge pull request #930 from GuangYiDing/feat/gemini-25-flash-image-support

feat: 修复 Gemini 生图接口并新增前端生图测试能力

frontend/src/i18n/locales/en.ts

@@ -2416,6 +2416,7 @@ export default {
       connectedToApi: 'Connected to API',
       usingModel: 'Using model: {model}',
       sendingTestMessage: 'Sending test message: "hi"',
+      sendingGeminiImageRequest: 'Sending Gemini image generation test request...',
       response: 'Response:',
       startTest: 'Start Test',
       testing: 'Testing...',
@@ -2427,6 +2428,13 @@ export default {
       selectTestModel: 'Select Test Model',
       testModel: 'Test model',
       testPrompt: 'Prompt: "hi"',
+      geminiImagePromptLabel: 'Image prompt',
+      geminiImagePromptPlaceholder: 'Example: Generate an orange cat astronaut sticker in pixel-art style on a solid background.',
+      geminiImagePromptDefault: 'Generate a cute orange cat astronaut sticker on a clean pastel background.',
+      geminiImageTestHint: 'When a Gemini image model is selected, this test sends a real image-generation request and previews the returned image below.',
+      geminiImageTestMode: 'Mode: Gemini image generation test',
+      geminiImagePreview: 'Generated images:',
+      geminiImageReceived: 'Received test image #{count}',
       soraUpstreamBaseUrlHint: 'Upstream Sora service URL (another Sub2API instance or compatible API)',
       soraTestHint: 'Sora test runs connectivity and capability checks (/backend/me, subscription, Sora2 invite and remaining quota).',
       soraTestTarget: 'Target: Sora account capability',