feat: 补充gpt生图模型测试功能

frontend/src/i18n/locales/en.ts

@@ -3023,7 +3023,7 @@ export default {
       connectedToApi: 'Connected to API',
       usingModel: 'Using model: {model}',
       sendingTestMessage: 'Sending test message: "hi"',
-      sendingGeminiImageRequest: 'Sending Gemini image generation test request...',
+      sendingImageRequest: 'Sending image generation test request...',
       response: 'Response:',
       startTest: 'Start Test',
       testing: 'Testing...',
@@ -3035,13 +3035,13 @@ 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}',
+      imagePromptLabel: 'Image prompt',
+      imagePromptPlaceholder: 'Example: Generate an orange cat astronaut sticker in pixel-art style on a solid background.',
+      imagePromptDefault: 'Generate a cute orange cat astronaut sticker on a clean pastel background.',
+      imageTestHint: 'When an image model is selected, this test sends a real image-generation request and previews the returned image below.',
+      imageTestMode: 'Mode: Image generation test',
+      imagePreview: 'Generated images:',
+      imageReceived: 'Received test image #{count}',
       // Stats Modal
       viewStats: 'View Stats',
       usageStatistics: 'Usage Statistics',