# cdd-iteration — cycle/412

**Cycle:** 412
**Issue:** [cnos#412](https://github.com/usurobor/cnos/issues/412)
**Date:** 2026-05-22
**Authoring stage:** ε (collapsed onto δ for this cycle)
**Status:** Courtesy stub — zero findings

## Counts

| Findings | Patches | MCAs | No-patch |
|---------:|--------:|-----:|---------:|
| 0 | 0 | 0 | 0 |

## Notes

Docs-only cycle authoring `src/packages/cnos.cds/docs/empirical-anchor-cdd.md`. The synthesis was a representative mapping from cycles to CDS surfaces (the surfaces declared in cycle/407). No new protocol gap surfaced; no patch needed; no MCA filed.

The pattern observed across the CDS migration wave (#406–#410) — zero findings per cycle — continues with this cycle. This is the receipt stream confirming that extract-by-reference v0.1 (the cnos#403 wave's scope decision) is hosting the migration without drift signal.

## Trigger-class scan

Per CDS.md §Assessment §9.1 trigger classes:

- review-churn — not triggered (R1 APPROVED)
- loaded-skill miss — not triggered (correct skill tier loaded: `cdd/design`, `cdd/issue/contract`)
- AC drift — not triggered (all 8 ACs PASS mechanically)
- contract drift — not triggered (implementation contract pinned by δ; α adhered)
- evidence-binding gap — not triggered (every cited cycle has a path or SHA)
- doctrine-source ambiguity — not triggered (mapping always to a named CDS.md surface)

No trigger class fired. No `cdd-*-gap` finding to record.

## Aggregator row

```
| 412 | #412 | 2026-05-22 | 0 | 0 | 0 | 0 | .cdd/unreleased/412/cdd-iteration.md |
```
