v0.1.2

chore: release v0.1.2 (#16)

## Summary
- bump version to v0.1.2
- document task complexity option and 1h default timeout
- add test covering default 1h timeout

## Testing
- `uv run black src/ tests/`
- `uv run flake8 src/ tests/`
- `uv run mypy src/`
- `uv run python -m pytest tests/ -v`


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https://chatgpt.com/codex/tasks/task_e_68a5cc675d08832281e8853176074e34

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>