README now covers features list, run instructions, design rationale (integer money/duration, read-time cost resolution, soft budget enforcement, Flyway-only schema, API shape). NEXT_STEPS.md catalogs deferred work: user CRUD UI, rate snapshots, notes field, CSV export, auth, pagination, Playwright e2e, i18n, dark mode, bookmarkable URLs, full backend test pyramid. 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>