docs: cut restated upstream behavior left by the stamp sweep (batch 6) #15514

Problem

The stamp sweep in #15475 (docs: drop stamps from pointer records (batch 6)) found these passages restating upstream behavior. Under contract 6.0.0 (#15468) restated behavior is not stamped; it is cut to a pointer or rewritten as this repository's own rule. The sweep left them unchanged because cutting them changes what a skill tells the agent.

Items

• plugins/testing/skills/audit/SKILL.md:257: restates the tsd and Vitest type-test file patterns.
• plugins/testing/skills/audit/SKILL.md:321: quotes the Playwright test-retries page.
• plugins/testing/skills/audit/SKILL.md:329: restates the forbidOnly scaffold idiom.
• plugins/testing/skills/audit/SKILL.md:359: restates that Vitest and Jest have no flaky guard.
• plugins/testing/skills/run-e2e/context/e2e.md:149: parenthetical summaries of each linked page.
• plugins/discovery/hooks/webfetch-truncation.mjs:23: quotes the hooks page ("depends on the tool").
• plugins/review/README.md:51: quotes three sub-agents page statements.
• plugins/work-items/reference/item-content-trust.md, reference/work-class-labels.md,
  tools/work-item-tracker/CONTRACT.md (role mapping): restate how GitHub maps triage to read.
• plugins/work-items/skills/measure-delivery/SKILL.md:28: the metric table names DORA's five metrics.
• plugins/architecture/skills/map-deployment/SKILL.md:360-480: Claim/Basis records restating
  CloudFormation, Pulumi, HCL JSON and ECS forms.
• plugins/disk-hygiene/skills/clean/reference/scan-flags.md:145: quotes the Python os.stat_result
  entry (stamp kept: the quote is a stored string read on Python 3.14.7).

Owner rulings applied (coordinator, D26)

• absorb-upstream: a page-source read date records no figure, so the skill no longer asks for
  an as-of date on a page source (SKILL.md intro, steps and report; templates/record.md page
  block). The license record holds a copied string (license text or id) and keeps its stamp.

• parent-contract shared trigger: kept as a named trigger on our maxTurns decision, no date;
  the "re-date it" clause went with the date.

• As-of tables, per row: pointer rows leave the cell empty, value and probe rows keep their date, and the
  intro says so (testing/skills/run-e2e/context/bundled-run.md,
  discovery/skills/explore/reference/native-explore.md,
  discovery/skills/research/reference/native-deep-research.md). Every row lost it, so the column
  is gone, in discovery/skills/read-docs/reference/bundled-claude-code-docs.md and both
  code-tidying bundled-simplify.md files. Unchanged, all value rows:
  testing/skills/check-visual-parity/SKILL.md (pixelmatch default, contract version) and
  discovery/skills/research/context/artifact-shape.md (upstream date-field names).

• report SKILL.md trio: stamps dropped in plugins/discovery/skills/report/SKILL.md and copied
  byte-identical to plugins/implementation/skills/report/SKILL.md and
  plugins/plugin-quality/skills/report/SKILL.md, with patch fragments for both plugins.

• Probe records that store a result keep their stamp (Codex thread on map-components): the
  LikeC4 likec4@1.59.4 validate records in architecture map-components, map-containers,
  map-context and map-deployment; the disk-hygiene: model-invocable read-only audit skill for orchestrators and subagents #5516 and feat(disk-hygiene): add model-invocable read-only audit skill #5590 probes (2.1.285) in
  disk-hygiene/skills/audit/SKILL.md; the docs(disk-hygiene): state belt lifetime and subagent reach from a 2.1.285 probe #5565 subagent-belt probe (2.1.285) in
  disk-hygiene/skills/clean/SKILL.md; the Python 3.14.7 st_ctime quote in
  disk-hygiene/skills/clean/reference/scan-flags.md; the pinned Chromium and Firefox SHAs in the
  machine-health browser-extensions record; and the gh 2.103.3 observations in
  work-items/skills/setup/reference/check.md and tools/work-item-tracker/CONTRACT.md. Removals
  stay on probe records that only describe behavior.

Kept, unsure

None.

Instruction alignment

• plugins/docs-hygiene/skills/write-for-humans/SKILL.md, reference/sources.md,
  reference/sentence-rules.md: the record shape they describe is now decision plus pointer.
• plugins/knowledge/skills/docpage-digest/context/anthropic-docs-profile.md: a hedge pointer no
  longer asks for an as-of date and trigger.

Do

Per item: cut to the anchored pointer, keep as our own rule with its reason, or record why it stays. A cut that changes agent behavior needs an eval or a stated basis.

Related

Refs: #15475, #15468