Dev Toolbar Review Guide Review checklist for PRs touching the dev toolbar ( ) and its integration points in . The toolbar surfaces telemetry events and allows feature flag overrides during local development (expanding to staging/preview). When This Applies PRs modifying any of these paths need growth eng review: - (owned by in CODEOWNERS) - (flag override reads, event subscription) - (flag override merge logic) - App-level mounting: / / in , , Note: and are NOT in CODEOWNERS for growth-eng, so PRs touching only those files won't auto-request review. Watch for these in the PR feed. Review Che…