Merge pull request #636 from cagedbird043/pr/antigravity-gemini-3.1-models

fix(antigravity): 补全测试连接 Gemini 模型列表并新增 3.1 Pro High/Low 支持

backend/internal/handler/admin/account_handler.go

@@ -1480,6 +1480,10 @@ func (h *AccountHandler) GetAvailableModels(c *gin.Context) {
 		// 添加 Gemini 3 系列模型用于测试
 		geminiTestModels := []UnifiedModel{
 			{ID: "gemini-3-flash", Type: "model", DisplayName: "Gemini 3 Flash"},
+			{ID: "gemini-3-pro-low", Type: "model", DisplayName: "Gemini 3 Pro Low"},
+			{ID: "gemini-3-pro-high", Type: "model", DisplayName: "Gemini 3 Pro High"},
+			{ID: "gemini-3.1-pro-low", Type: "model", DisplayName: "Gemini 3.1 Pro Low"},
+			{ID: "gemini-3.1-pro-high", Type: "model", DisplayName: "Gemini 3.1 Pro High"},
 			{ID: "gemini-3-pro-preview", Type: "model", DisplayName: "Gemini 3 Pro Preview"},
 		}
 		models = append(models, geminiTestModels...)

backend/internal/pkg/antigravity/claude_types.go

@@ -161,6 +161,8 @@ var geminiModels = []modelDef{
 	{ID: "gemini-3-flash", DisplayName: "Gemini 3 Flash", CreatedAt: "2025-06-01T00:00:00Z"},
 	{ID: "gemini-3-pro-low", DisplayName: "Gemini 3 Pro Low", CreatedAt: "2025-06-01T00:00:00Z"},
 	{ID: "gemini-3-pro-high", DisplayName: "Gemini 3 Pro High", CreatedAt: "2025-06-01T00:00:00Z"},
+	{ID: "gemini-3.1-pro-low", DisplayName: "Gemini 3.1 Pro Low", CreatedAt: "2026-02-19T00:00:00Z"},
+	{ID: "gemini-3.1-pro-high", DisplayName: "Gemini 3.1 Pro High", CreatedAt: "2026-02-19T00:00:00Z"},
 	{ID: "gemini-3-pro-preview", DisplayName: "Gemini 3 Pro Preview", CreatedAt: "2025-06-01T00:00:00Z"},
 	{ID: "gemini-3-pro-image", DisplayName: "Gemini 3 Pro Image", CreatedAt: "2025-06-01T00:00:00Z"},
 }