refactor: merge ActionSummary and Thought fields to eliminate duplication

- Remove redundant ActionSummary field from PlanningResult struct
- Update parsers to use unified Thought field instead of duplicate fields
- Modify chat interface to display Thought instead of ActionSummary
- Update planner logging to use thought instead of summary
- Adjust prompt templates to use thought field consistently
- Switch test LLM service from UI-TARS to DoubaoVL
- Add default parameter handling for sleep tool

uixt/mcp_tools_utility.go

@@ -34,7 +34,8 @@ func (t *ToolSleep) Implement() server.ToolHandlerFunc {
 	return func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
 		seconds, ok := request.Params.Arguments["seconds"]
 		if !ok {
-			return nil, fmt.Errorf("seconds parameter is required")
+			log.Warn().Msg("seconds parameter is required, using default value 5.0 seconds")
+			seconds = 5.0
 		}
 
 		// Sleep action logic