deploy script: abort if daemon already running

scripts/deploy.sh

@@ -8,6 +8,14 @@ REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 TARGET=/persist/damocles-lab
 STATE="$TARGET/state"
 
+echo "==> checking for running daemon in lab"
+if RUNNING=$(~/lab.sh "pgrep -af damocles-daemon" 2>/dev/null); then
+    echo "ERROR: daemon is running in lab - won't overwrite live binary." >&2
+    echo "$RUNNING" >&2
+    echo "Stop it first: ~/lab.sh \"pkill damocles-daemon\"" >&2
+    exit 1
+fi
+
 echo "==> building"
 cd "$REPO"
 nix develop --command cargo build --bin damocles-daemon --bin damocles-mcp 2>&1 | tail -3