fix(gemini): 保留兼容平台的 API 版本路径

apps/api/internal/clients/gemini.go

@@ -61,11 +61,13 @@ func geminiURL(baseURL string, model string, apiKey string) string {
 		base = "https://generativelanguage.googleapis.com"
 	}
 	base = strings.TrimSuffix(base, "/openai")
-	if strings.HasSuffix(base, "/v1beta") {
-		base = strings.TrimSuffix(base, "/v1beta")
+	if !strings.HasSuffix(base, "/v1") &&
+		!strings.HasSuffix(base, "/v1beta") &&
+		!strings.HasSuffix(base, "/v1alpha") {
+		base += "/v1beta"
 	}
 	escapedModel := url.PathEscape(model)
-	return fmt.Sprintf("%s/v1beta/models/%s:generateContent?key=%s", base, escapedModel, url.QueryEscape(apiKey))
+	return fmt.Sprintf("%s/models/%s:generateContent?key=%s", base, escapedModel, url.QueryEscape(apiKey))
 }
 
 func geminiBody(request Request) map[string]any {