Each spinner created a new tea.NewProgram which sent DECRQM queries for
synchronized output mode 2026. When the program exited and restored
cooked terminal mode, the terminal's DECRPM response leaked as visible
^[[?2026;2$y characters. Replace Bubble Tea spinner with a simple
goroutine animation loop writing directly to stderr via lipgloss.
Replace fmt.Printf calls in connection pool health check routines with debug logger calls. Health check messages are now only displayed when the --debug flag is enabled, providing a cleaner terminal output during normal operation while maintaining diagnostic information for troubleshooting.
* feat: add MCP connection pool with health check and retry mechanism
* feat: add proactive connection health check before tool calls
- Add GetConnectionWithHealthCheck method to perform health check before reusing connections
- Add performHealthCheck method to test connection health with ListTools call
- Modify InvokableRun to use health-checked connections
- This prevents first tool call failure when connection is broken
- Improves user experience by ensuring connections are healthy before tool execution
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Co-authored-by: 茂勋 <shancangchen.csc@alibaba-inc.com>
Ed Zynda