- .env.example documents all env vars with defaults (postgres creds, DATABASE_URL, TTLs, pool sizes)
- compose.yml reads postgres credentials and app config from .env via env_file
- .gitignore: track .env.example, ignore .env
- PostgreSQL schema: sources, manga, chapters, pages, source_meta with indexes
- golang-migrate runner with embedded SQL via go:embed (pgx5:// scheme)
- sqlc-generated type-safe queries for all tables (pgx/v5 native)
- Config package with all env vars including TTL durations
- Wire DB init and config into cmd/server/main.go