chore: pre-commit hooks for linting, tests, and conventional commits

[Copilot]

Adds .pre-commit-config.yaml with hooks that mirror the existing CI pipeline locally:

• Linting/formatting: ruff-check (with --fix) and ruff-format via astral-sh/ruff-pre-commit v0.15.2
• Type checking: mypy as a local hook (uv run mypy src/)
• Unit tests: pytest as a local hook (uv run pytest --tb=short -q)
• Commit messages: compilerla/conventional-pre-commit v4.4.0 on the commit-msg stage
• Renovate: Enabled the :enablePreCommit preset in renovate.json so Renovate automatically keeps remote pre-commit hook versions updated

mypy and pytest use local system hooks to run within the project's uv-managed virtualenv, ensuring they have access to all dependencies.

Activate with:

pre-commit install --hook-type pre-commit --hook-type commit-msg

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[deviantintegral]

@copilot Add Renovate rules to keep the remote GitHub precommit repositories updated.

[Copilot]

@copilot Add Renovate rules to keep the remote GitHub precommit repositories updated.

Added the :enablePreCommit preset to renovate.json in 3767b68. This enables Renovate's pre-commit manager (opt-in since it's in beta) to automatically detect and update the rev fields for remote hooks (astral-sh/ruff-pre-commit and compilerla/conventional-pre-commit) in .pre-commit-config.yaml.