night-market-build-and-env

# night-market-build-and-env Recreate a working claude-night-market development environment from a bare machine, verify it in under an hour, and avoid the traps that have broken it before. Everything below was verified against the repo on 2026-07-02 (v1.9.15). One rule dominates: every Python tool runs through `uv run`. uv is Astral's Python package and environment manager. On first `uv run` it creates `.venv/` and syncs it from `uv.lock`. Never install repo dependencies with bare `pip`. ## Toolchain setup Install in this order. "via uv" means the tool resolves from `uv.lock` automatically. There is no manual install step for those rows. | # | Tool | Required? | Install hint | Verify command | |---|------|-----------|--------------|----------------| | 1 | uv | REQUIRED | official installer at astral.sh/uv | `uv --version` | | 2 | Python 3.12 | REQUIRED | `uv python install 3.12` | `python3 --version` | | 3 | make + bash | REQUIRED | distro package (build-essential, Xcode CLT) | `make --version` | | 4 | ruff >=0.14.13 | via uv | none (dev dependency in `uv.lock`) | `uv run ruff --version` | | 5 | bandit | via uv | none (pre-commit env is pinned separately, see traps) | `uv run bandit --version` | | 6 | mypy >=1.13 | via uv | none | `uv run mypy --version` | | 7 | pre-commit >=4 | via uv | `uv run pre-commit install` | `uv run pre-commit --version` | | 8 | Python 3.9 | optional | `uv python install 3.9` | `uv venv --python 3.9 /tmp/py39-check` | | 9 | node + npm | optional...