test-visual-regression — Screenshot baselines that stay green

Degree of freedom: MIXED — what to baseline [HIGH freedom]; determinism loop and 3× clean runs [LOW freedom — run exactly]. playwright-cli / project runner — never Playwright MCP.

Establish a screenshot baseline for important UI states and wire diffing so unintended visual change fails CI.

Functional tests prove the button works; visual tests prove it didn't move, shrink, lose styling, or overlap the next element.

Use playwright-cli (npx --yes @playwright/cli@latest) and the project's Playwright test runner — never Playwright MCP. Read protocol-browser-anti-stall before any headed session.

This skill vs neighbors