feat(deploy): add script to kill processes on Next.js deployment ports

scripts/deploy/kill_next_ports.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+# Kill processes listening on the Next.js test/main deployment ports.
+
+PORTS="9135 9185"
+
+find_pids_by_port() {
+    port="$1"
+    if command -v lsof >/dev/null 2>&1; then
+        lsof -ti tcp:"$port" 2>/dev/null || true
+        return
+    fi
+
+    if command -v fuser >/dev/null 2>&1; then
+        fuser "$port"/tcp 2>/dev/null || true
+        return
+    fi
+
+    echo "WARN: neither lsof nor fuser is available; cannot inspect port $port" >&2
+}
+
+kill_port() {
+    port="$1"
+    pids="$(find_pids_by_port "$port")"
+
+    if [ -z "$pids" ]; then
+        echo "port $port: no process found"
+        return
+    fi
+
+    echo "port $port: stopping PID(s) $pids"
+    kill $pids 2>/dev/null || true
+    sleep 2
+
+    still_running=""
+    for pid in $pids; do
+        if kill -0 "$pid" 2>/dev/null; then
+            still_running="$still_running $pid"
+        fi
+    done
+
+    if [ -n "$still_running" ]; then
+        echo "port $port: force killing PID(s)$still_running"
+        kill -9 $still_running 2>/dev/null || true
+    fi
+}
+
+for port in $PORTS; do
+    kill_port "$port"
+done