feat: adopt the shared docs lookup in the remaining docs-reading callers #6494

No related issue: follow-up to #6484; part of #6020.

Summary

#6484 adopted the shared docs lookup (fetch-docs.sh, docs-cache.sh, /discovery:read-docs) in the callers it named. The caller inventory for that work found more skills and scripts that read upstream docs page content by WebFetch or a hand-written curl, in plugins #6484 did not name. Each needs the lookup carried into its plugin (synced scripts, procedure, prerequisites, version bump) before its text can switch.

Fix

Switch each caller below to the lookup, or record why it stays:

• attribution: skills/audit/reference/source-fetch.md (raw .md read for fingerprinting; allowed-tools lists no curl, so check whether adoption needs a grant change and ask before making one)
• instruction-placement: skills/migrate/scripts/cutover-check.sh (curls env-vars.md and greps a heading; the plugin already carries the fetcher after feat: adopt the shared docs lookup across fetching skills and agents #6484, the test needs a cache dir)
• multi-agent: skills/audit-defaults/SKILL.md inline path ("Fetch each URL pointer with WebFetch"); the workflow's drift-checker agent has no Bash by design and stays as is
• performance: skills/go-faster/reference/areas.md (WebFetch of a catalog row's pointer; go-faster-sweeper holds Bash)
• planning: skills/draft-goal-condition/SKILL.md ("confirm against the live docs")
• session-flow: skills/retro/reference/ecosystem-improvement-catalog.md (verify capability claims against official docs)
• playbooks: skills/fable-5 context and reference/model-adaptation "Pointer" lines that say to fetch a vendor docs section
• docs-hygiene: skills/audit-derivability (~185 "Re-fetch the page")

Discovery-only callers keep WebFetch with the fixed pointer line #6484 introduced.

Verification

• Each switched file contains fetch-docs.sh, docs-cache.sh or the pointer line.
• scripts/sync-shared-copies.sh --check and scripts/check-changelog-parity.sh --check exit 0.
• No agent or skill tool grant widens.

Related

• feat: adopt the shared docs lookup across fetching skills and agents #6484
• feat(lib): shared docs cache for followed documentation links across plugins #6020
• feat(discovery): WebFetch truncation hook and raw docs slices for verifier agents #6481 (raw slices for the no-Bash verifier agents)