The original title is "copilot browser tools make the frontend reviewable"

Short summary

GitHub Copilot's browser automation enables agents to test frontends in real browsers, catching UI bugs that code review misses—modal focus traps, disabled button states, mobile layout issues, timing problems. The real value isn't just browser access; it's making browser observations part of the reviewable artifact with documented evidence: URLs, viewports, user states, steps, screenshots, console errors, and gaps. Frontend PRs should include testing receipts alongside code diffs so reviewers understand what was verified and what wasn't.

• •Browser automation for Copilot enables real-world frontend testing during development, catching UI bugs missed by code review
• •The key value is recording browser observations as reviewable evidence—URLs, viewports, screenshots, errors, and testing gaps
• •Frontend teams should require agents to document what was tested and what wasn't, preventing false confidence in untested edge cases

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