feat: add OpenProject 17 docker compose stack and test data seeder

- Configure OpenProject 17 with PostgreSQL 17 and Memcached

- Add scripts/seed-test-data.rb for test project, work packages, and API key generation

- Add scripts/seed.sh to orchestrate container health check and seed execution

- Add scripts/start.sh and scripts/stop.sh stack lifecycle helpers

- Provide .env.example with defaults

scripts/start.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+# ==============================================================================
+# OpenProject MCP Companion - Start & Seed Stack
+# ==============================================================================
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
+
+cd "${ROOT_DIR}"
+
+if [ ! -f .env ]; then
+  echo "[start.sh] Creating .env from .env.example..."
+  cp .env.example .env
+fi
+
+echo "[start.sh] Starting OpenProject docker compose stack..."
+docker compose up -d
+
+echo "[start.sh] Running seed script to prepare test data and API token..."
+"${SCRIPT_DIR}/seed.sh"
+
+echo "[start.sh] OpenProject MCP test stack is ready!"