Codex mirror boundary

Resolve the named skill, tool, connector, and account against what is actually available in this Codex session before following the upstream steps. Do not infer connection, authentication, credits, or runtime parity from this mirror. Preserve the external product named upstream and report a concrete missing capability when required.

Control UI

Use local browser automation to verify UI behavior with evidence. First reuse the repo's own Playwright, browser, or Electron harness if it exists; otherwise assemble a temporary local harness around the app's dev server or Chromium debug port.

What It Is Used For

• Reproducing UI bugs that depend on real browser focus, keyboard input, scrolling, resizing, or rendering.
• Verifying visual or accessibility changes with screenshots and snapshots.
• Checking local web, IDE, or Electron behavior before shipping.
• Capturing console logs, network logs, CPU profiles, traces, or heap snapshots.
• Creating before/after evidence for verify-this.

Setup Pattern