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

.env.example

@@ -0,0 +1,24 @@
+# ==============================================================================
+# OpenProject Docker & MCP Server Environment Configuration
+# ==============================================================================
+
+# OpenProject Docker Image Tag (Targeting OpenProject 17)
+TAG=17-slim
+
+# Local exposed port on the host
+PORT=8080
+
+# Database Configuration
+POSTGRES_VERSION=17
+POSTGRES_PASSWORD=p4ssw0rd
+
+# OpenProject Application Configuration
+OPENPROJECT_HOST__NAME=localhost:8080
+OPENPROJECT_HTTPS=false
+SECRET_KEY_BASE=openproject-secret-key-base-for-local-testing-at-least-64-characters-long
+
+# MCP Server Client Configuration
+# Once the container is running and seeded via scripts/seed.sh,
+# OPENPROJECT_API_KEY will be automatically written to .env.test
+OPENPROJECT_BASE_URL=http://localhost:8080
+OPENPROJECT_API_KEY=