PULL_REQUEST_TEMPLATE.md

Summary

Changes

Test plan

• uv run pytest tests/ --ignore=tests/integration -q — unit
• uv run ruff check . — lint
• uv run mypy kalshi/ — type-check
• If touching live endpoints: uv run pytest tests/integration/ against demo
• If adding a new endpoint: registered in tests/_contract_support.py::METHOD_ENDPOINT_MAP

Notes for reviewers

Issue links

Closes #