Arguments: $FEATURE (or "all" to test entire app)

Read CLAUDE.md before doing anything else. Read docs/PRD.md for acceptance criteria. Read docs/SCREENS.md for the full screen inventory. If wireframes/ exists, read wireframes/INDEX.html for expected layouts.

PREREQUISITE CHECK:

Confirm the dev server is running (if not, start it)
Confirm Playwright MCP is available (browser_navigate tool exists)
If $FEATURE is specified, identify every screen and flow for that feature
If "all", use docs/SCREENS.md as the full checklist

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PHASE 1 — SCREEN-BY-SCREEN VISUAL WALKTHROUGH ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

For EVERY screen listed in docs/SCREENS.md (or the feature subset):

test-ui