chore: add start/stop/restart scripts for Planarchy

- scripts/start.sh: docker compose up, prisma generate, clear .next cache,
  start Next.js, wait for health check, show status
- scripts/stop.sh: kill Next.js by PID + fuser, docker compose stop
- scripts/restart.sh: stop then start

Usage:
  ./scripts/start.sh    # Start everything
  ./scripts/stop.sh     # Stop everything
  ./scripts/restart.sh  # Full restart

Co-Authored-By: claude-flow <ruv@ruv.net>

scripts/stop.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+echo "Stopping Planarchy..."
+
+# 1. Stop Next.js dev server
+if [ -f /tmp/planarchy-dev.pid ]; then
+  PID=$(cat /tmp/planarchy-dev.pid)
+  if kill -0 "$PID" 2>/dev/null; then
+    echo "  Stopping Next.js (PID $PID)..."
+    kill "$PID" 2>/dev/null || true
+    sleep 1
+    kill -9 "$PID" 2>/dev/null || true
+  fi
+  rm -f /tmp/planarchy-dev.pid
+fi
+
+# Also kill anything on port 3100
+fuser -k 3100/tcp 2>/dev/null || true
+
+# 2. Stop Docker services (keep data volumes)
+echo "  Stopping PostgreSQL + Redis..."
+docker compose stop postgres redis 2>/dev/null || true
+
+echo ""
+echo "Planarchy stopped."