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* fix(dashboard): prevent PTY input from blocking event loop * fix(win-pty): don't terminate a healthy ConPTY on write cancellation; log leaked write workers Review follow-up to the backpressure fix. CancelledError on WinPtyBridge.write() ran the same path as a timeout and force-terminated the ConPTY. Cancellation means the owning socket went away mid-write, which is the keep-alive session's normal reattach case, not a wedged child; killing the process there defeats the PTY-outlives-socket design. Give the in-flight write the shutdown grace window and only terminate if it never lands. When terminate() fails to unblock pywinpty, the worker stays parked in the default executor. That was swallowed by a bare except; log it so a slow thread-pool starvation is diagnosable. --------- Co-authored-by: Austin Pickett <pickett.austin@gmail.com>