shard(tick): 1920Z — razor-cadence batch 12 FINAL — 100% COVERAGE (50/50 rules)

[AceHack]

Final cumulative results

Razor-cadence item 4 (composes-with audit): COMPLETE across 12 ticks.

Metric	Value
Rules audited	50/50 (100%)
Testable cross-refs LIVE	217/218 (99.5%)
Rule-acknowledged-not-exists (healthy)	5
Stale pointers found	1 (captured by B-0514)

9-variant reference-classification taxonomy (load-bearing artifact)

Developed organically across batches B8 + B10:

1. Concrete file ref — test -e
2. Glob ref — ls | wc -l >= 1 (per-pattern iteration)
3. Template path — surface dir + ≥1 instance
4. Backlog ID — dedup when row file is also referenced
5. Legacy-noted ref — file may exist for historical anchor
6. Transient/ephemeral — rule says "DON'T rely on this"
7. Anti-pattern ref — rule mentions for contrast
8. Conditional ref — "would exist IF..."
9. Alternative-location ref — repo uses different valid path

Without semantic classification, ~10% of refs would falsely report as stale.

Mechanization candidate

tools/hygiene/audit-rule-cross-refs.ts encoding the 9-variant taxonomy. Composes with B-0506 (worktree prune cadence) as a factory-hygiene CI cron.

Single finding

B-0514: feedback_aaron_wwjd_keeps_the_grey_in_aaron_honest_devil_lives_in_the_grey_in_numbers_2026_05_12.md referenced from 3 places but never authored.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds the 1920Z tick shard documenting the final “razor-cadence item 4” (composes-with cross-ref) audit results, including cumulative coverage stats and the 9-variant reference-classification taxonomy for future mechanization.

Changes:

• Adds a new tick shard capturing batch 12 audit coverage and cumulative totals across 12 batches.
• Documents the 9-variant reference-classification taxonomy and a proposed mechanization path.

Comments suppressed due to low confidence (2)

docs/hygiene-history/ticks/2026/05/14/1920Z.md:30

• P1: The "Audit findings" table also uses || at the start of each row, which introduces an empty leading column and breaks table rendering. Use a single leading | consistently for these table rows.

| Category | Count | Status |
|----------|-------|--------|
| Concrete file refs | 9 | 9/9 LIVE |
| Template path (tick shards) | 1 | resolves to 81 shards today |

**10/10 LIVE.**

docs/hygiene-history/ticks/2026/05/14/1920Z.md:48

• P1: The cumulative results table is formatted with || at row start, which creates an empty first column and makes the header separator (||-------|...) inconsistent. Switch these to single-leading-pipe rows so the table renders correctly.

| Batch | PR | Rules | LIVE/Total |
|-------|----|-------|-----------|
| B1 | #3152 | 4 | 30/30 |
| B2 | #3161 | 4 | 37/37 |
| B3 | #3174 | 4 | 17/18 (B-0514 captures) |
| B4 | #3179 | 4 | 28/28 |
| B5 | #3181 | 4 | 22/22 + 3 cleared |
| B6 | #3189 | 4 | 20/20 |
| B7 | #3192 | 4 | 14/14 |
| B8 | #3194 | 4 | 17/17 |
| B9 | #3195 | 4 | 5/5 |
| B10 | #3196 | 4 | 10/10 + 2 RANE |
| B11 | #3199 | 4 | 7/7 |
| B12 | this PR | 6 | 10/10 |
| **Total** | — | **50** | **217/218 (99.5%)** + 5 rule-acknowledged-not-exists |