* fix(supervisor): restore canonical stdin after connection loss
Probe idle SSH peers and enforce a receive deadline during transport I/O,
including writes blocked by a stalled relay. Release the dead attachment's
stdin lease through existing handler cleanup.
Retry denied write intent on later ordinary input without displacing a
healthy owner. Preserve explicit read-only, EOF and detach behavior, and
discard control bytes retained while input ownership was denied.
Cover half-open forwarding, blocked writes, healthy idle peers and competing
reconnects through the production supervisor frame bridge and real SSH.
Fixes#3648
Signed-off-by: Shiju <shiju@nvidia.com>
* docs(skills): describe read-only reconnect input retry
Explain what an openshell-cli user sees when automatic recovery reattaches before the supervisor closes the dead connection: the attachment reports read-only, later ordinary input retries stdin acquisition and prints `input enabled`, input typed while read-only is discarded, exit keys still detach, and an explicitly read-only viewer or a healthy owner is never affected.
Signed-off-by: Shiju <shiju@nvidia.com>
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Signed-off-by: Shiju <shiju@nvidia.com>
