stardust:qa — read-only site QA sweep

One live URL in. One evidence-bound findings report out. This skill never
edits anything — not site content, not DA documents, not repo code. Its only
writes are report artifacts under stardust/qa/. If the user wants findings
fixed, that is a separate, explicit follow-up outside this skill.

qa is the post-deploy counterpart of rollout's delivery verification: where
rollout asks "did every page ship?", qa asks "is everything that shipped
actually correct?" — at all three layers a deploy can silently break:

1. delivery — what the pipeline serves (.plain.html, full HTML, sheets, sitemap)
2. rendered — what a browser shows after block decoration
3. regression — what changed since the last approved state (visual baselines)

A green upper layer never implies the lower one: a publish 200 ≠ delivered,
delivered HTML ≠ rendered correctly.

Setup

1. Run the master skill's setup (skills/stardust/SKILL.md § Setup) if not
   already done this session. qa works standalone too — it only needs a live
   base URL.
2. Resolve the base URL (the *.aem.live host or production domain). If
   the user didn't give one, look in stardust/rollout/rollout.json
   (site.liveHost) or ask.
3. Resolve the inventory source — what pages the sweep covers, merged from
   any of: stardust/template-map.json (also supplies template assignments for
   conformance), a paths file, and the live sitemap.xml (always fetched;
   parity mismatches become findings, so a wrong sitemap can't silently shrink
   coverage).
4. Optional inputs that unlock deeper checks:
   - --scrape stardust/scrape — verbatim fidelity vs the extraction capture
   - --expected-blocks <json> — explicit per-template block expectations
   (otherwise derived by fleet consensus)
5. Browser checks need playwright resolvable from the project (node_modules/playwright).
   If missing, run the delivery-layer checks only (--checks routing,content,templates,metadata,links)
   and tell the user what was skipped.
6. Append a phase-transition line to stardust/status.jsonl per
   reference/run-status.md (master skill) at sweep start/end.

Procedure

Phase 1 — deterministic sweep

node <plugin>/skills/qa/scripts/qa.mjs \
  --base https://main--<site>--<org>.aem.live \
  --template-map stardust/template-map.json \
  --scrape stardust/scrape

Writes stardust/qa/inventory.json, report.json, report.html, screenshots
under stardust/qa/shots/, and (first run) visual baselines under
stardust/qa/baselines/. Exit 0 = no active errors, 1 = active errors,
2 = infra failure. reference/checks.md documents every check, its finding
ids, and severity rationale. Useful variants: --checks <subset>,
--max-pages <n> (smoke run), --fail-on warn (strict gate).

First run on a site: expect a wave of visual/baseline-created info findings —
that is the baseline being established, not a defect. Baselines should be
committed to the workspace repo so later runs diff against an approved state.

Phase 2 — triage the ambiguous flags (LLM judgment, still read-only)

The deterministic sweep marks two finding classes as needs triage; read
report.json and judge only those:

• content/verbatim-below-threshold — inspect evidence.missingNodes against
  the live page and the scrape capture: is copy actually lost/corrupted
  (defect) or acceptably transformed (candidate for the allowlist)?
• visual/visual-diff — open evidence.baseline and evidence.current
  side by side (they are PNGs; view them): real layout/style regression, or
  benign dynamism (carousel frame, loaded font, live embed)? Use the
  bands evidence to locate the changed region.

Record each verdict by annotating the finding in your summary to the user
(defect vs non-defect + why). Do not edit report.json scores and do not fix
anything.

Phase 3 — report to the user

Summarize: totals by severity, the confirmed defects first (with page paths
and one-line evidence), then triaged-away flags with their rationale, then
notable warns. Point at stardust/qa/report.html. Recommend — but do not
apply — fixes.

Allowlist workflow (documented non-defects)

stardust/qa/allowlist.json (schema in schemas/qa-allowlist.schema.json)
keeps known non-defects from drowning every future run — e.g. a source page
that itself ships placeholder copy, or a form endpoint deliberately awaiting a
client credential. Entries match on check/id/path/messagePattern and must
carry a reason. Allowlisted findings stay in the report, greyed out, so the
evidence is never deleted.

Only add an entry when the user confirms the flag is a non-defect (or it is
already documented as one in the project's records). Never allowlist to make
a run green.

Read-only contract

• Writes only under stardust/qa/ (plus the status.jsonl ledger line).
• Never invokes deploy/publish APIs, never PUTs to DA, never edits blocks,
  styles, or content — even for "trivial" fixes the sweep itself surfaced.
• Reports failure honestly: a crashed check appears in the report as
  <check>/check-crashed (error), never silently dropped.

Scheduling / CI

The runner is plain node with no plugin-runtime dependency, so the same
command works from a GitHub Action or cron for drift monitoring; --fail-on
sets the gate. In CI without playwright, pin --checks to the delivery-layer
subset.

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