fix(shikane): detect silent deadlocks; re-apply profile on sway reload

watchdog: covers both observed deadlock flavours -- the loud one that repeats
"Received invalid input AtomicChangeDone at state Discarded", and the silent
one that logs nothing and just never leaves VariantInProgress.

shikane-recover-on-reload.sh (new, previously referenced by sway/config but
never committed): shikanectl reload -> sleep 2 -> watchdog check, falling
back to a service restart when reload cannot recover.

clamshell-mode.sh: documents why the laptop panel is no longer enabled
unconditionally on lid-open, which raced shikane's "External Display" profile
(eDP-1 disabled by design) and produced "Atomic commit failed: Device or
resource busy" churn.

.config/sway/scripts/clamshell-mode.sh

@@ -1,4 +1,12 @@
 #!/bin/sh
+# Lid-driven laptop panel handling.
+#
+# shikane is authoritative for output layout/scaling
+# (~/.config/shikane/config.toml + shikane-watchdog.timer). This script used to
+# run `swaymsg output eDP-1 enable` whenever the lid was open, which on every
+# `swaymsg reload` raced the shikane "External Display" profile (eDP-1 off) and
+# contributed to "Atomic commit failed: Device or resource busy" churn.
+# It now only ever disables.
 
 LAPTOP_OUTPUT="eDP-1"
 LID_STATE_FILE="/proc/acpi/button/lid/LID/state"
@@ -6,7 +14,7 @@ LID_STATE_FILE="/proc/acpi/button/lid/LID/state"
 read -r LS < "$LID_STATE_FILE"
 
 case "$LS" in
-*open)   swaymsg output "$LAPTOP_OUTPUT" enable ;;
 *closed) swaymsg output "$LAPTOP_OUTPUT" disable ;;
+*open)   : ;;   # leave to shikane
 *)       echo "Could not get lid state" >&2 ; exit 1 ;;
 esac