sync-testing-skill

Scan package tests, update @.agents/rules/testing.mdc with new patterns. Follow writing-skills: DRY, ultra-concise, token-efficient.

Process:

1. Glob packages/[PACKAGE]/**/*.spec.{ts,tsx}
2. Read 6-8 diverse tests: plugins, transforms, components, hooks, utils
3. Identify patterns NOT in testing.mdc:
   • Imports (ONLY mock/spyOn from bun:test - describe/it/expect are global)
   • Test organization, mocking, assertions, RTL, edge cases
4. Update testing.mdc: Add to existing sections (DRY), one example per pattern, Quick Reference if frequent
5. Report: Found X patterns → Updated Y sections

Critical:

• Only actual codebase patterns. No theoretical examples. No duplication.
• Test globals (describe, it, expect, etc.) are global via tooling/config/global.d.ts - NO imports needed
• ONLY import mock and spyOn when used

Package: Specify path (e.g., packages/media)