Self-hosted, AI-assisted travel planner. Angular PWA frontend, NestJS API + background worker, PostgreSQL, Redis/BullMQ, and a Mistral-backed travel agent behind a strict tool boundary.

.env.example lists configuration names and non-secret defaults only. Real production secrets (database password, SMTP credentials, LLM API keys, etc.) are never committed and live only on the deployment host / secret store, supplied to containers as environment variables.

Repository layout

frontend/   Angular PWA (pnpm workspace member)
backend/    NestJS workspace: apps/api, apps/worker, libs/*
docker/     Production Dockerfiles and edge (Nginx) config
scripts/    Compose-invariant checks and TeamCity entry points
docs/       Specs, plans, and architecture documentation

Developer setup

pnpm install
pnpm dev:infra
DATABASE_URL=postgresql://travel_planner:travel_planner_dev@localhost:5432/travel_planner REDIS_URL=redis://localhost:6379 pnpm --filter backend start:api
pnpm --filter frontend start

pnpm dev:infra starts local PostgreSQL/Redis (see compose.dev.yml); pnpm dev:infra:down stops them.

Quality gates

pnpm lint
pnpm test
pnpm test:compose
pnpm build

TeamCity deployment scripts

TeamCity invokes repository-owned scripts rather than duplicating deployment logic in step configuration:

scripts/teamcity/validate.sh       # install, lint, test, compose-invariant check, build
scripts/teamcity/build-images.sh   # build + push immutable IMAGE_TAG images
scripts/teamcity/deploy.sh         # pull, migrate, compose up -d, smoke test
scripts/teamcity/smoke.sh          # health/root checks against APP_BASE_URL
scripts/teamcity/rollback.sh       # redeploy the previous IMAGE_TAG

deploy.sh never runs docker compose down as part of a routine deployment; rollback.sh never attempts an automatic database downgrade.

Production topology

Production Docker Compose (compose.yml) publishes exactly one host port, on the edge (Nginx) service, which serves the built Angular app and reverse-proxies /api/* and /health/* to the internal api service. api, worker, postgres, and redis are reachable only over the internal Docker network. See docs/architecture/deployment.md for the full contract and scripts/teamcity/ for the TeamCity-invoked build/deploy/rollback scripts.