pull_request_template.md

Summary

Describe the change and motivation.

Checklist

• Tests added/updated
• Regular tests pass locally (cargo nt)
• Doc tests pass locally (cargo test --doc --all-features)
• Docs updated
  • Existing docs updated where behavior changed
  • New doc added under docs/ if introducing a new area
  • Linked from docs/README.md

Links / Design notes

Add design notes, code pointers, or diagrams if helpful.