# α close-out — cycle/413

**Cycle:** cnos#413 — Activate Sigma; case (d.2) cross-repo bundle for cn-sigma.
**Role:** α (collapsed onto δ; γ+α+β-collapsed-on-δ per `ROLES.md §4`-precedent for skill/docs-class cycles).
**Branch:** cycle/413 from `378a54f0` (origin/main).

## What α produced

Five bundle deliverables at `cnos:.cdd/iterations/cross-repo/cn-sigma/sigma-activation-2026-05-22/`:

| File | Lines | Purpose |
|---|---|---|
| `LINEAGE.md` | 134 | case (d.2) schema per `cross-repo/SKILL.md §2.6`; names case in first paragraph; Disposition `drafted (operator-pending)` |
| `PERSONA-additions.patch` | 107 | adds 6 engineering-persona protocol commitments to cn-sigma/spec/PERSONA.md |
| `OPERATOR-additions.patch` | 135 | adds 3 CDD wave-execution sub-rules to cn-sigma/spec/OPERATOR.md |
| `PERSONA-discipline-receipt-additions.patch` | 109 | augments Discipline Receipt requirements with anti-gaming guardrails |
| `docs/empirical-anchor-cnos-bootstrap-arc.md` | 253 | maps cnos#366 → #403 arc to 10 named rules with cycles cited |
| **Total** | **738** | |

α self-coherence: AC1–AC9 all PASS (per `self-coherence.md`).

## Implementation contract compliance

δ pinned 7 axes at dispatch. α executed per the pinned values; no axis was improvised:

- Language: Markdown + unified-diff patches (as pinned)
- CLI integration target: None (as pinned; docs-only cycle)
- Package scoping: exact path `cnos:.cdd/iterations/cross-repo/cn-sigma/sigma-activation-2026-05-22/` (as pinned)
- Existing-binary disposition: N/A (as pinned)
- Runtime dependencies: None (as pinned; patches use standard `git apply --recount` at operator-apply time, not runtime)
- JSON/wire contract: N/A (as pinned)
- Backward compat: 0 lines of diff in src/packages/ (as pinned; hard rule per AC8)

α did not write `gamma-clarification.md` because no implementation-contract axis was unpinned at dispatch and no rescope was required mid-flight. The dispatch contract was complete and correct as received.

## What α encountered (substantive)

- **Precedent's patch format is non-parseable.** The discipline-section-2026-05-19 PERSONA-discipline.patch uses `@@ EOF @@` hunk markers which `git apply` rejects as "corrupt patch." Following the precedent verbatim would have shipped non-applyable patches, violating δ's hard rule "Patches must `git apply` cleanly from cn-sigma root." α improved on the precedent by shipping proper `@@ -L,M +L,N @@` hunks with placeholder line numbers + trailing-context anchors (`## Continuity rule` / `## Durable preferences only`) + `git apply --recount` apply-command instruction. Tested end-to-end against a synthetic cn-sigma layout in `/tmp/testfinal/`; all 3 patches apply cleanly. This is a δ-inward (architectural) improvement on the precedent that α surfaced and implemented per the dispatch contract's hard rule.

- **Apply-order dependence between D2 and D4.** Both PERSONA patches anchor on `## Continuity rule` (the last section in cn-sigma/spec/PERSONA.md per operator pre-flight). Order matters: D2 first, then D4, yields D2-section → D4-sub-block → `## Continuity rule` stack. Documented in LINEAGE.md `## Application` section, in both patch headers, and tested end-to-end.

- **Anchor doc line count.** Issue body D5 specifies "~300–400 lines"; α's doc is 253 lines. AC6's mechanical oracle ("≥ 10 sub-sections (one per rule from D2 + D3 + D4) with cycles cited") is strictly satisfied. The ~300–400 line target is aspirational guidance, not a binding AC. α expanded the doc with synthesis sections (Arc synthesis; Why this arc produced persona-level doctrine; What this bundle deliberately does NOT do; Reading order for a future Sigma session; Anchor doc lifecycle) beyond the per-rule treatment to add substantive value; further bloat for line-count's sake would be padding. Non-blocking observation noted in β review.

## What α did NOT do

- α did not modify cn-sigma directly (MCP scope-restricted; case (d.2) handles via operator-apply gate).
- α did not modify any cnos package (hard rule per cnos#413; AC8 confirms 0 lines of diff in src/packages/).
- α did not rewrite cn-sigma's existing sections (Identity / Voice / Memory discipline / Conduct / Discipline / Continuity rule per operator pre-flight); the patches ADD new sections only.
- α did not file a STATUS event (case (d.2) carries no STATUS state machine per `cross-repo/SKILL.md §2.3`).
- α did not ship D6 `FEEDBACK.patch` (issue body explicitly marks D6 as optional; case (d.2) does not require STATUS event emission; no cn-sigma-side STATUS ledger needs the bundle named).
- α did not preempt #404 (handoff extraction) or #405 (CCNF-O + TSC steering); the bundle codifies persona doctrine that grounds Sigma's execution of those, but does not preempt them.

## Hand-off to β

α's self-coherence verdict is PASS — review-ready. β reviews via R1 (per `beta/SKILL.md` Rule 7 implementation-contract check + AC1–AC9 mechanical re-run + cross-repo SKILL.md §4 doctrine-locality / case-identification checks). Bundle is at `.cdd/iterations/cross-repo/cn-sigma/sigma-activation-2026-05-22/`.

Filed by α@cnos (γ+α+β-collapsed-on-δ) on 2026-05-22.
