docs(pointers): close open pointer findings in miro, context-budget, disk-hygiene and dometrain-mcp #8011

This was generated by AI during attend-queue.

Refs: #7293

Agent Brief

Type: Task
Summary: Close the upstream-pointer sweep's open medium and low findings in miro, context-budget, disk-hygiene and dometrain-mcp.

Current behavior:
The sweep's light pass (#7293) left these findings open as of 2026-10-11/12:

• miro README and setup SKILL.md: drift, debug-your-config check-mcp-servers
• context-budget audit levers.json (recheck, 3 findings): mcp#configure-tool-search, headless#start-faster-with-bare-mode, agent-sdk/tool-search
• disk-hygiene clean safety-model (recheck): incomplete-record, headless#turn-off-permission-prompts-in-unattended-runs
• dometrain-mcp README (recheck): incomplete-record, mcp#scope-hierarchy-and-precedence

Desired behavior:
Each listed passage is re-checked against the live page (docs fetch scripts). A finding already fixed on main is left alone and noted in the PR body. Otherwise: drift is corrected to what the live page says now; a missing pointer gains a pointer record (exact anchor, as-of date, recheck trigger); an incomplete record gains its missing parts; a wrong-host citation names the canonical URL. Restated volatile specifics in skill bodies become pointers, not new copies.

Key interfaces:

• Pointer records: anchor, as-of date and recheck trigger beside each restated upstream fact.

Acceptance criteria:

• Each listed finding is either changed in the diff or named in the PR body as already fixed, with the live anchor it was checked against.
• Every pointer record the diff adds or completes carries an anchor, an as-of date and a recheck trigger.
• If any skill file is touched, the PR's CI runs the check-skills job and it passes.
• One changelog fragment exists for each plugin the diff touches (scripts/new-changelog-fragment.sh), and scripts/check-changelog-fragments.sh --check passes. (skip for repository-root files)

Finding list and lane notes:

• The finding list is the Light pointer pass: open medium and low pointer findings from the upstream-pointer sweep #7293 checklist: plugins/miro/README.md:16 (with skills/setup/SKILL.md:44-47, debug-your-config check-mcp-servers); context-budget/skills/audit/reference/levers.json:393, :207 and :402/:467; plus the disk-hygiene clean safety-model and dometrain-mcp README rows on the same list. Each live page is on code.claude.com.
• Start from work-resolve-issue/issue-8011-39106056280-1 (830cf03475).
• Known: plugins/disk-hygiene/skills/clean hygiene.test.sh fails 6 tests in the lane sandbox (blocked root-file previews), unrelated to a docs diff. The check is the PR's CI.
• The lane may skip its fresh-context review if git is unavailable to the subagent, and says so in the PR body.

Out of scope:

• High-severity findings (not in Light pointer pass: open medium and low pointer findings from the upstream-pointer sweep #7293).
• Files outside this group.
• Vendored upstream baselines (playbooks boris vendor/upstream-skill.md).

This was generated by AI during backlog shaping. Split from #7293; the owner approved filing it in an attended backlog-shaping session on 2026-10-18.