feat: optimize UI-TARS parser with coordinate conversion and action mapping

- Add action mapping for UI-TARS parser to convert action names to option.ActionName
- Implement bounding box to center point coordinate conversion for better accuracy
- Update coordinate normalization to handle coordinates > 1000 properly
- Enhance test cases to verify coordinate scaling and center point conversion
- Improve action argument processing with proper coordinate transformation
- Add comprehensive test coverage for coordinate conversion edge cases

Key improvements:
- Bounding box [x1,y1,x2,y2] now converts to center point [cx,cy] for actions
- Coordinate scaling properly handles different screen resolutions
- Action names are mapped through doubao_1_5_ui_tars_action_mapping
- Enhanced error handling for invalid coordinate formats

uixt/ai/planner_test.go

@@ -29,7 +29,7 @@ func TestVLMPlanning(t *testing.T) {
 
 	userInstruction += "\n\n请基于以上游戏规则，给出下一步可点击的两个图标坐标"
 
-	modelConfig, err := GetModelConfig(option.LLMServiceTypeDoubaoVL)
+	modelConfig, err := GetModelConfig(option.LLMServiceTypeUITARS)
 	require.NoError(t, err)
 
 	planner, err := NewPlanner(context.Background(), modelConfig)
@@ -157,9 +157,9 @@ func TestHandleSwitch(t *testing.T) {
 		imageFile  string
 		actionType string
 	}{
-		{"testdata/deepseek_think_off.png", "click"},     // 关闭状态，需要点击开启
-		{"testdata/deepseek_think_on.png", "click"},      // 关闭状态，需要点击开启
-		{"testdata/deepseek_network_on.png", "finished"}, // 开启状态，无需操作
+		{"testdata/deepseek_think_off.png", "uixt__tap_xy"},    // 关闭状态，需要点击开启
+		{"testdata/deepseek_think_on.png", "uixt__tap_xy"},     // 关闭状态，需要点击开启
+		{"testdata/deepseek_network_on.png", "uixt__finished"}, // 开启状态，无需操作
 	}
 
 	for _, tc := range testCases {