Web Testing Protocol (L2)

Exploratory, AI-driven validation of dashboard UI changes — not regression testing. Regression coverage is L1's job (smoke + e2e suites under the dashboard's test directories). L2 catches things L1 misses: layout bugs, mobile regressions, interaction flows that only fail in a real browser.

Adopting in another repo: the procedure (read diff → map to routes → run agent-browser at two viewports → screenshot → verdict) is repo-agnostic. The route table, test paths, and verdict schema below are examples from onsager-ai/onsager. Fork the skill and replace those concrete bits for your own dashboard.

When to invoke

• A PR touches apps/dashboard/**
• L1 e2e fails and you need to know if it's a real regression, flaky, or env
• Someone says "validate the UI" / "dogfood this change"

The app under test

The CI pipeline builds crates/stiglab/deploy/Dockerfile — a single image bundling the Rust backends (stiglab + synodic) and the prebuilt dashboard SPA. It listens on http://localhost:3000.

Primary routes:

Viewports (always test both)

• Desktop: agent-browser set viewport 1280 720
• Mobile: agent-browser set viewport 375 812

Mobile matters — the dashboard ships with a responsive layout (see the md: breakpoints throughout). Horizontal overflow and hidden nav are the top-two regression classes.

Procedure

1. Read the diff (git diff $DIFF_RANGE) — you will receive DIFF_RANGE as an env var from CI.
2. Map changes to routes. A change in src/pages/SessionsPage.tsx ⇒ /sessions. A change in src/components/layout/** ⇒ every route.
3. For each affected route, at each viewport:
   • agent-browser open http://localhost:3000<route>
   • Snapshot the page; verify the heading + key elements render.
   • Actively exercise interactive elements — don't just check markup:
     • Click buttons, submit forms, open dialogs.
     • Verify the result — did the UI state change, did the dialog close, did new data appear? Presence of markup is not proof of working.
   • Check for layout bugs. On mobile especially: horizontal scroll is a failure; a nav that blocks content is a failure.
   • agent-browser screenshot --screenshot-dir /tmp/l2-screenshots then rename the output to {route-slug}-{desktop|mobile}.png.
4. Crystallize findings. When you validate new behavior or catch a bug whose fix you can describe, write a deterministic L1 test under apps/dashboard/tests/smoke/ (component-level) or apps/dashboard/tests/e2e/ (browser-level). This is how L2 discoveries become permanent L1 coverage.
5. Emit the verdict. Return JSON matching tests/l2-verdict-schema.json:
   • PASS if every affected route passes at both viewports.
   • FAIL if any route fails; include the specific failure in viewports[].issues[].

Triage mode

When invoked after an L1 e2e failure, your job is different:

1. Read the failing test file(s) under apps/dashboard/tests/e2e/.
2. Reproduce against http://localhost:3000 with agent-browser.
3. For each failure, classify: regression (real bug), flaky (intermittent / timing), or environment (test harness or CI issue).
4. Return JSON matching tests/l2-triage-schema.json with root cause and suggested fix.

Guardrails

• Scope to the diff. Don't re-test the whole app on a one-line change.
• Screenshots are required evidence — no screenshot, the viewport didn't run.
• Don't invent routes. If a new route was added in the diff, use that one; otherwise stick to the table above.
• Keep it cheap. One browser session per viewport is plenty.