# γ scaffold — cycle/412

**Cycle:** 412
**Issue:** [cnos#412](https://github.com/usurobor/cnos/issues/412)
**Parent:** cnos#403 (cnos.cds bootstrap tracker)
**Sibling sub:** cnos#411 (Sub 6, parallel)
**Mode:** docs-only
**Collapse pattern:** β-α-collapse-on-δ (γ+α+β collapsed on δ)
**Branch:** `cycle/412` (from `71b25672`, head of `origin/main` post-cycle/410 merge)

## Scope

Author `src/packages/cnos.cds/docs/empirical-anchor-cdd.md`: a surface-by-surface mapping from representative cnos cycles onto the CDS canonical surfaces those cycles exercised. Structural precedent: `src/packages/cnos.cdr/docs/empirical-anchor-cph.md`.

## Hard rules

1. `src/packages/cnos.cdd/` untouched.
2. `src/packages/cnos.cdr/` untouched.
3. `src/packages/cnos.cds/skills/cds/CDS.md` untouched.

## Deliverables

- **D1:** `src/packages/cnos.cds/docs/empirical-anchor-cdd.md` — new file, ~400–800 lines.

## Implementation contract

| Axis | Pinned value |
|---|---|
| Language | Markdown |
| CLI integration target | None |
| Package scoping | `src/packages/cnos.cds/docs/empirical-anchor-cdd.md` (new file only) |
| Runtime dependencies | None |
| Backward compat | Hard rules above |

## Acceptance criteria (per cnos#412)

- **AC1:** File exists at canonical path, ≥ 100 lines.
- **AC2:** `grep -c "^## " empirical-anchor-cdd.md` ≥ 5.
- **AC3:** ≥ 5 CDS surfaces have cycle-mapping tables.
- **AC4:** ≥ 20 distinct cnos cycle numbers cited.
- **AC5:** `git diff origin/main..HEAD -- src/packages/cnos.cdd/` returns 0 lines.
- **AC6:** `git diff origin/main..HEAD -- src/packages/cnos.cdr/` returns 0 lines.
- **AC7:** `git diff origin/main..HEAD -- src/packages/cnos.cds/skills/cds/CDS.md` returns 0 lines.
- **AC8:** Related documents section cites CDS.md, CDD.md, cph empirical anchor, INDEX.md.

## Required artifacts

- `gamma-scaffold.md` (this file)
- `self-coherence.md`
- `beta-review.md`
- `alpha-closeout.md`
- `beta-closeout.md`
- `gamma-closeout.md`
- `cdd-iteration.md` (courtesy stub; zero findings expected)
- INDEX.md row

## Skills loaded

Tier 3: `cdd/design`, `cdd/issue/contract`.

## Branch + merge

Branch `cycle/412` created from `71b25672`. After all ACs PASS, push `cycle/412` to origin. **Do not merge to main from this cycle.** Operator merges.

## Dispatch

γ+α+β collapsed on δ. δ-as-architect (per cnos#393) pins the implementation contract above; γ scaffolds and tracks; α authors D1; β reviews under §Review CLP and signs F1–F10.
