E2E Verification — Execution Protocol

Internal template. Entry point: agent-browser skill.

NEVER

NEVER assert state before `wait --load networkidle` — page may still be rendering
NEVER reuse refs after navigation — run `snapshot` again after every page change
NEVER leave `set offline on` after offline test — always restore with `set offline off`
NEVER skip `errors` check before test steps begin — pre-existing JS errors invalidate results

Execution Sequence