[CAT-UNVERIFIED tag](5) Always-on rules, README and gap analysis name the tag

[EdbertChan]

Summary

The always-on rules, the root README and the hook gap analysis now name the {{CAT-UNVERIFIED}} tag instead of bare UNVERIFIED:.

always-on/evidence-check.md and corpus/CLAUDE.learned.md load into every session. Both still said to write the marker the hooks now reject.

Review Claim

Approve four docs-unit files naming the tag instead of the retired marker.

Review Lane

docs

Review Unit

docs

Safety Invariant

Prose only; no runtime change.

Slice Rationale

docs is its own review unit. The repo-wide guard is a proof file, which cannot ship with docs, so it rides with the product skill in the next PR.

Non-goals

• Enforcement is not in this PR: the rule these lines restate is enforced by the hooks in PRs 1 and 2 of this stack. validate-pr-body.mjs puts these four files in the docs unit, which cannot ship with code, so check_codify_has_code.py runs here with --allow-prose-only, as preflight documents for a docs-only change.

No hook, script, skill, test or install change.

Test Plan

Test Plan

• python3 engine/skills/make-pr/scripts/preflight.py --base <this PR's base>

neutral 4 file(s): README.md, always-on/evidence-check.md, corpus/CLAUDE.learned.md, docs/hooks-gap-analysis.md
gate    python3 scripts/check_codify_has_code.py --base stack/EdbertChan/cat-unverified-tag/4-corpus-skill-prose
        fail  new rule prose with no code change (thrash-reflect-automate step 3 without step 2):
        fail  always-on/evidence-check.md: + - Run the check. Only when it cannot run, tag the claim `{{CAT-UNVERIFIED: <claim> -- cannot verify:
gate    python3 scripts/check_no_dated_provenance.py --base stack/EdbertChan/cat-unverified-tag/4-corpus-skill-prose
        ok      no dated provenance
fail    preflight: fix the above before gh pr create

• Preflight's codify gate fails on this slice by design: it asks for code beside new rule prose, and this unit cannot carry code. Run by hand with the flag preflight documents for a docs-only change:

$ python3 scripts/check_codify_has_code.py --base stack/EdbertChan/cat-unverified-tag/4-corpus-skill-prose --allow-prose-only
ok      codify-has-code: prose-only change explicitly allowed (--allow-prose-only)
exit=0

• bash scripts/run_all_tests.sh -- exit 0, 45 suites OK, 0 failed, 1677 tests

Revert Plan

Revert Plan

• Safe to revert? Yes
• Revert command: git revert <sha>
• Post-revert steps: None
• Data migration? No

🤖 Generated with Claude Code

https://claude.ai/code/session_01VKsvxJk65w6q7KnPSRYvNg

---

Note

Low Risk
Prose-only changes to README and always-on/corpus docs; no hooks, scripts, or install behavior in this PR.

Overview
Docs-only alignment so session-loaded prose matches hook behavior from earlier stack PRs: bare UNVERIFIED: is retired in favor of {{CAT-UNVERIFIED: <claim> -- cannot verify: <reason>}} (or tagging plus naming a blocker where the README describes hedge-runs-prove-it).

always-on/evidence-check.md now tells agents to run checks first and only use the structured tag when verification cannot run. corpus/CLAUDE.learned.md applies the same tag when relaying name-matched subagent citations. The root README hook table and docs/hooks-gap-analysis.md (named-verb-guard pass guard) are updated so published hook/docs text matches what enforcement expects.

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[EdbertChan]

Mergify repair stopped: lowest open stack PR #419 is based on stack/EdbertChan/cat-unverified-tag/4-corpus-skill-prose, which still belongs to open PR(s) #418 outside this stack; leaving it alone to avoid dropping dependency changes

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