pull_request_template.md

What

Brief description of the change.

Why

Problem this solves / issue it closes (e.g. Fixes #123).

How

Key implementation decisions, trade-offs, or areas reviewers should focus on. Call out intentional omissions (especially vs older TypeScript behavior) when relevant.

Testing

How you validated this locally (commands, scenarios, screenshots if UI).

Checklist

• Branched from main (or continuing an existing PR branch)
• One focused change; links the related issue when applicable
• Follows AGENTS.md conventions and PR hygiene
• Tests added/updated for user-visible behavior where it makes sense
• Relevant CI checks pass for the area touched (go, frontend, etc.)