V1 creates users, projects, time_entries with CHECK constraints and
three indexes (entry_date, project_id, user+date composite).
V2 seeds 3 users (Alice/Bob/Clara) and 3 projects, one with a
project-level hourly rate override (Acme Relaunch).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Sets up toolchain pinning, format/lint (Biome + Spotless), lefthook
pre-commit hooks, Docker Compose for Postgres, and trivial passing
tests for both stacks.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
achim