termcanvas-agent-sync-debugging

Diagnose TermCanvas agentmux nodes that fail to appear and terminal canvases that become janky, resize repeatedly, or show corrupted/unreadable xterm text as terminal count grows, plus duplicate terminal views created after a release relaunch. Use when a child agent is missing, restored terminals duplicate or move to the wrong canvas, a folderless canvas stops syncing, UI or TUI redraws recur every few seconds,…