Step 1: the settings page, read-only, live on NA Ingest at port 8020

Overview (problems in the room with the hold action, the live deck, one line per computer),
Keys (both pages, what each key will say and what holding does), Computers (map with the keys
that turn red, cards with a light per thing that runs there from the watchdog's snapshot and a
read-only probe, Gear, Setup), Logs, History (the installer's copies for now), Help (four cards,
the generated key guide, cheat sheet and Where things are, glossary, Companion facts), Site setup
and Fixes read-only. The editing code is checked (with a lockout) but nothing can change yet.

Also: faults are attributed to the computers their check is about; the installer refuses while a
HyperDeck is recording (--now overrides); the Lighting PC's MIDI session is listed; the probes read
sudo's answer correctly and expand $HOME outside the quotes.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

install.sh

@@ -22,7 +22,7 @@ KEEP_CONFIG=0
 for arg in "$@"; do
   case "$arg" in
     --keep-config) KEEP_CONFIG=1 ;;
-    --remove|--rollback) ;;
+    --remove|--rollback|--now) ;;
     *) echo "unknown option $arg" >&2; exit 2 ;;
   esac
 done
@@ -127,6 +127,17 @@ if [[ "$1" == "--rollback" ]]; then
   exit 0
 fi
 
+# 0. Not while a HyperDeck is recording (the watchdog restarts for a few seconds); --now overrides.
+if [[ -f "$DEST/live-now.json" && " $* " != *" --now "* ]] && /usr/bin/python3 - "$DEST/live-now.json" <<'PY'
+import json, sys, time
+d = json.load(open(sys.argv[1]))
+sys.exit(0 if d.get("live") and time.time() - d.get("time", 0) < 60 else 1)
+PY
+then
+  echo "a HyperDeck is recording right now ($(/usr/bin/python3 -c 'import json,sys; print(json.load(open(sys.argv[1])).get("reason"))' "$DEST/live-now.json")) - not installing; use --now to override" >&2
+  exit 3
+fi
+
 # 1. The config that will run, checked with the code that will run it.
 mkdir -p "$DEST"
 if [[ $KEEP_CONFIG == 1 && -f "$DEST/config.json" ]]; then