Visual Validation — Autonomous Screenshot Verification

Philosophy

Every UI change should be visually verified before it ships. Peekaboo captures pixel-accurate screenshots. The system compares before/after and flags visual regressions. No manual "looks good to me" — the machine verifies what the machine built.

Autonomous Flow

static/* files modified (detected by auto-review-hook or E2E testkit)
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peekaboo image --mode screen → ~/.maggy/visual-verify/after-{ts}.png
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Compare with latest baseline (previous after-*.png)
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AI evaluation: Gemini Flash analyzes screenshot for visual regressions
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Report: CLEAN or REGRESSION_DETECTED with specific issues