alpha

name	alpha
description	α role in CDD. Implements the selected change, produces the review-ready artifact set, and writes α close-out.
artifact_class	skill
kata_surface	embedded
governing_question	How does α turn an issue pack into a review-ready implementation without violating constraints or skipping required artifacts?
visibility	internal
parent	cdd
triggers	["alpha"]
scope	role-local
inputs	["issue pack","active design constraints","active skills","branch state","CI state"]
outputs	["review-ready artifact set",".cdd/unreleased/{N}/self-coherence.md (review-readiness signal + cycle close-out)","alpha close-out"]
requires	["active role is α","canonical CDD.md loaded"]
calls	["design/SKILL.md","plan/SKILL.md"]
calls_dynamic	[{"source":"issue.tier2_bundles"},{"source":"issue.tier3_skills"}]

Alpha

Core Principle

Coherent α work produces aligned artifacts in declared order, proves acceptance criteria before review, and makes remaining debt explicit before β ever reads the branch.

α does not merely write code. α owns the artifact set up to review: issue understanding, active skills, tests, code, docs, self-coherence, and pre-review readiness.

The failure mode is premature handoff: the branch compiles locally or "looks done," but β must still discover missing scope, missing sibling updates, unstated debt, broken contracts, or stale branch metadata.

Load Order

When acting as α:

1. load CDD.md as the canonical lifecycle and role contract
2. load this file as the α role surface
3. load lifecycle sub-skills as the work requires:
   • issue/SKILL.md when interpreting AC boundaries or issue quality
   • design/SKILL.md when producing or judging design-required work
   • plan/SKILL.md when implementation sequencing is non-trivial
4. load Tier 2 + issue-specific Tier 3 engineering skills as required by the issue (Tier 2 bundles per src/packages/cnos.eng/skills/eng/README.md; cnos.core/skills/skill when authoring or modifying skills)

The detailed step sequence is in cnos.cds/skills/cds/CDS.md §"Development lifecycle" → §"Step table" (the 0–13 canonical ordering); the α-role rows are Steps 4–7 (Gap, Mode, Artifacts, Self-coherence). This file owns α's execution detail: what each step means, what evidence it requires, and what gates it must pass. Canonical artifact locations (close-outs, PRA, snapshot dirs, tags) are defined in cnos.cds/skills/cds/CDS.md §"Artifact contract" → §"Location matrix"; α writes its close-out at the path declared there.

Algorithm

1. Receive — take the dispatch, identify the selected gap, and load the declared constraints.
2. Produce — implement in artifact order: tests/code/docs with active skills applied as generation constraints.
3. Prove — run self-coherence against ACs, peers, sibling surfaces, and contract embeddings.
4. Gate — pass the pre-review checklist before requesting β.
5. Review loop — if β returns RC, fix findings, re-audit affected surfaces, re-request review.
6. Close-out — when β approves, write α close-out to main.

---

1. Define

1.1. Identify the parts

A complete α handoff has these parts:

• issue / selected gap

• active skills (Tier 1, Tier 2, Tier 3)

• implementation artifacts

• acceptance evidence

• self-coherence report

• pre-review gate evidence

• .cdd/unreleased/{N}/self-coherence.md (primary branch artifact) carrying the CDD Trace

• ❌ "The diff is the work"

• ✅ "The work is the diff plus the evidence that the diff closes the declared gap"

1.2. Articulate how they fit

The issue names what gap is being closed. The active skills constrain how the work may be authored. The artifacts implement the change. Self-coherence proves the claimed closure. Pre-review proves the branch is structurally ready for β.

• ❌ Code first, then improvise explanation in .cdd/unreleased/{N}/self-coherence.md
• ✅ Named gap → active skills → tests/code/docs → self-coherence → pre-review → review request

1.3. Name the failure mode

α fails through closure overclaim:

• claiming a class of gap is closed without enumerating all peers / input sources
• updating one surface while leaving sibling or harness surfaces stale
• asking β to find missing authoring work that α should have done before review

---

2. Unfold

2.1. Dispatch intake

On dispatch:

1. configure α git identity
2. check out the cycle branch named in the dispatch prompt. The dispatch prompt includes a Branch: cycle/{N} line (cnos.cds/skills/cds/CDS.md §"Coordination surfaces"; prompt format in gamma/SKILL.md §"Dispatch prompts"). Run git fetch origin cycle/{N} && git switch cycle/{N}. α never creates a branch. If origin/cycle/{N} does not exist, surface the dispatch error to γ and refuse to invent a name — γ owns branch creation (cnos.cds/skills/cds/CDS.md §"Development lifecycle" → §"Branch rule" / §"Step table" Step 2, gamma/SKILL.md §2.5 Step 3a). If the harness placed α on a per-role pre-provisioned branch (e.g. claude/{slug}-{rand}), switch off it before any code change; that branch is not the cycle branch and must not receive cycle commits.
3. begin polling the issue and .cdd/unreleased/{N}/ on origin/cycle/{N} (see cnos.cds/skills/cds/CDS.md §"Coordination surfaces") — γ may write coordination notes to .cdd/unreleased/{N}/gamma-closeout.md, and β will respond in .cdd/unreleased/{N}/beta-review.md once you signal review-readiness. Issue-edit cache-bust: when polling sees a gamma-clarification.md add or update on the cycle branch, re-read the issue body via gh issue view {N} (or MCP equivalent) to get the live version, not cached state — canonical wire-format at cnos.handoff/skills/handoff/mid-flight/SKILL.md; the channel substrate at cnos.handoff/skills/handoff/artifact-channel/SKILL.md
4. read the issue fully
5. enumerate every artifact the issue names — both ## Related artifacts linked entries and any artifact named in inline prose (e.g. ## Parallel dependency, ## Depends on, "see also X.md", "drafted in parallel"). Read each before drafting; if a named artifact has no path, search the repo to resolve it. Surface unavailability to γ via the cycle's artifact channel before treating an artifact as skipped. Derives from: #278 F1 — α-1 read ## Related artifacts as the load list and missed the ## Parallel dependency paragraph naming docs/alpha/ctb/LANGUAGE-SPEC.md only by description; β round-1 D-blocker repaired in α-2.
6. load:
   • Tier 1: CDD.md + this file + lifecycle sub-skills as needed (do not load β or γ role skills)
   • Tier 2: always-applicable eng/*
   • Tier 3: issue-specific skills

Do not start coding until the active skill set is explicit.

• ❌ "I'll pick the language skill once I'm in the file"
• ✅ "Tier 3 includes eng/{language} and eng/ux-cli; both are loaded before implementation"

2.2. Produce in artifact order

Produce in CDS canonical artifact order (cnos.cds/skills/cds/CDS.md §"Artifact contract" → §"Ordered flow") unless the issue explicitly justifies a narrower path:

1. design artifact (when required) or explicit "not required"
2. coherence contract (.cdd/unreleased/{N}/self-coherence.md §Gap, or design artifact §Problem)
3. plan (when implementation sequencing is non-trivial) or explicit "not required"
4. tests
5. code
6. docs
7. self-coherence
8. pre-review

Rules:

• design and plan may be marked "not required" only with a concrete justification (e.g. "single-file rename, no impact graph"); silent omission is incomplete

• tests must prove the actual claim, not just one happy path

• docs/specs must be updated before requesting review when authority surfaces changed

• .cdd/unreleased/{N}/self-coherence.md (the primary branch artifact) must carry the CDD Trace through step 7

• ❌ "Tests/code/docs first; design and plan are paperwork"

• ✅ "Design names the incoherence and ACs; plan orders the steps; only then do tests, code, docs, self-coherence, pre-review proceed — or each is explicitly marked not required with a reason"

2.3. Peer enumeration before closure claims

When the change touches a family of peers, enumerate the family before claiming closure.

Mandatory cases:

• sibling commands / providers / ops at the same layer
• multiple renderers or projections of the same fact
• multiple writers / readers of the same schema
• multiple input sources feeding one validator / sanitizer / membrane
• any claim that a failure class is "impossible by construction" or "structurally prevented"
• skill-class peers — when the diff modifies role skills (alpha/, beta/, gamma/, operator/), the contract change ripples downstream into lifecycle skills (review/, release/, post-release/, design/, plan/, issue/) which encode the contract operationally. Role-skill peers and lifecycle-skill peers are two distinct enumeration classes, not one undifferentiated set. Enumerate each separately and verify each surface against the changed contract; lifecycle-skill drift consistently survives a re-audit that lumps the two together. Derives from: #283 R1 F2 / F3 / F4 — three of four R1 findings landed in lifecycle skills (release/, post-release/) while α's re-audit covered role-skill peers; the audit's checklist did not distinguish the two classes.

Required output:

• peer set named

• each peer either updated or explicitly exempted with a reason

• ❌ "Three of four command paths now use the new rule"

• ✅ "Peer set = {A,B,C,D}. Updated A/B/C. D intentionally exempt because it does not consume the affected contract"

Peer enumeration applies at any scale. Beyond cross-surface peer sets, enumerate:

• Intra-doc repetition — one document carrying the same fact across multiple sentences, tables, or sections. Each occurrence is a peer. When a reviewer names one site of a numeric, SHA, count, or named-value drift, grep the doc for every occurrence of the wrong value AND the corrected value before claiming the fix is complete. Derives from: #266 F3 / F3-bis — DESIGN-266-dist-out-of-git.md carried one count across 4 sentences; 3 of 4 initially wrong; fixing only the named site surfaced F3-bis in the next round.

• Commit-message closure claims — a commit fixing a finding typically restates the finding's resolution. The commit message is a peer of the artifact it fixes; the same grep-every-occurrence rule applies. A commit message that asserts "one remaining mismatch" without running the grep that would tell you otherwise is a closure overclaim. Derives from: #266 commit 9f162dc — commit message claimed closure prematurely; F3-bis was the direct consequence.

• ❌ "§Concrete changes step 1 corrected — fixes the one remaining mismatch" (without grepping the doc)

• ✅ "grep '9 tarball|11 files' → 0 hits; grep '8 tarball|10 files' → 4 consistent hits at L88, L117, L187, L218 — doc reconciled"

2.4. Harness audit for schema-bearing changes

When the branch changes a parser, schema-bearing type, manifest shape, or runtime contract:

1. enumerate every producer of that shape
2. enumerate every consumer of that shape
3. audit non-primary-language writers too:
   • shell harnesses
   • CI workflow emitters
   • templates
   • test fixtures
   • generated defaults

This is not optional when a non-code harness can drift from the implementation.

• ❌ "The parser is fixed"
• ✅ "Parser fixed; shell fixture writer and CI-emitted example JSON audited against the same schema"

2.5. Self-coherence

Write .cdd/unreleased/{N}/self-coherence.md incrementally, one section at a time. Each section is a separate commit+push to the cycle branch. Do not attempt to write the entire file in one generation — stream timeouts will discard partial work.

Incremental write discipline:

1. Write each section below as a separate operation
2. Commit and push after each section
3. Report progress after each commit (e.g. "self-coherence §Gap committed")
4. If resuming after a failure, read what exists on the branch first and continue from the last committed section — do not restart

Sections (in order):

1. §Gap — issue, version/mode
2. §Skills — active skills (Tier 1/2/3)
3. §ACs — AC-by-AC check with evidence
4. §Self-check — role self-check: did α's work push ambiguity onto β? Is every claim backed by evidence in the diff?
5. §Debt — known debt
6. §CDD Trace — CDD Trace through step 7

Minimum contents (across all sections):

• issue
• version / mode
• active skills
• AC-by-AC check with evidence
• role self-check: did α's work push ambiguity onto β? Is every claim backed by evidence in the diff?
• known debt

Rules:

• map every AC to concrete evidence

• if an AC is only partially met, say so explicitly

• if a loaded skill would have prevented remaining debt, name it

• ❌ Writing the entire self-coherence file in one commit

• ✅ One section per commit, pushed incrementally, resumable after failure

2.6. Pre-review gate

Before signaling review-readiness in .cdd/unreleased/{N}/self-coherence.md, verify all of the following:

1. α verifies origin/cycle/{N} is rebased onto current origin/main (γ created the branch from origin/main at dispatch time per cnos.cds/skills/cds/CDS.md §"Development lifecycle" → §"Branch rule" / §"Step table" Step 2; α does not create or rebase a different branch — α only verifies that the cycle branch γ created has not drifted behind main while α was working). If origin/main advanced, α rebases the cycle branch onto it: git fetch origin main && git rebase origin/main && git push --force-with-lease origin cycle/{N}.
2. .cdd/unreleased/{N}/self-coherence.md carries CDD Trace through step 7
3. tests are present, or explicit reason none apply
4. every AC has evidence
5. known debt is explicit
6. schema / shape audit completed when contracts changed
7. peer enumeration completed when closure claim touches a family of surfaces
8. harness audit completed when a schema-bearing contract changed
9. post-patch re-audit completed after any mid-cycle patch — covering every language present in the diff, not only the dominant one
10. branch CI is green on the head commit (or, if local CI is unavailable, the artifact's review-readiness section says so explicitly and β waits for green before merge)
11. artifact enumeration matches diff. Every file in git diff --stat origin/main..HEAD must be explicitly mentioned in self-coherence.md CDD Trace step 6 or §ACs. Files not mentioned → gate fails. Derives from: TSC #23 cycles #25, #29 — α generated artifacts not declared in self-coherence.md; pre-review gate passed anyway.
12. caller-path trace for new modules. For every new module or function added, verify at least one non-test caller exists. Name the caller and the call site in CDD Trace step 6. Derives from: TSC #23 cycle #24 — α implemented new modules (extract_deltas, gauge_witness) never called from the main codepath; β caught in round 2–3.
13. test assertion count from runner output. Pre-review gate requires α to paste actual test runner output line count, not manually enumerate. Derives from: TSC #23 cycle #25 — self-coherence claimed 58 assertions; actual run showed 61.
14. α's commit author email matches the canonical role pattern. Run git log -1 --format='%ae' HEAD and verify the result equals alpha@{project}.cdd.cnos per operator/SKILL.md §Git identity for role actors (e.g. [e-mail] for the cnos project using the elision form). If the email drifts (e.g. [e-mail] from session-start muscle memory, or whatever git config --global user.email defaulted to), the cycle's commits violate the role-identity-is-git-observable property (operator/SKILL.md §"Git identity for role actors" + review/SKILL.md §Review identity). α corrects via path (a) retroactive git config user.email "alpha@{project}.cdd.cnos" && git rebase -i {merge-base} --exec 'git commit --amend --reset-author --no-edit' && git push --force-with-lease origin cycle/{N} before signaling review-readiness — this rewrites the existing α commits with the canonical email and force-pushes the cycle branch (β + γ commits on the same branch are cherry-picked through without amend, preserving their canonical authorship). Path (b) — configure correctly going forward and accept existing commits as legacy — is permitted only with explicit known-debt disclosure in self-coherence.md §Known debt, since path (b) leaves the cycle history with split α email forms and the role-identity-is-git-observable property is satisfied only prospectively. Derives from: #287 R1 F3 — α's session-start git config user.email "[e-mail]" drift survived all 10 prior pre-review-gate rows; β's contract-integrity check at R1 was the first surface to catch it; α R2 fix-round used path (a) cleanly; the missing executable check at α-side authoring time is the gap this row closes.
15. γ-side artifact presence at the rule-3.11b surface β will examine. α verifies the γ-artifact-of-record exists on origin/cycle/{N} (β's binding §3.11b gate per review/SKILL.md §3.11b "Exemption discoverability"). Two valid configurations:
    • §5.1 canonical dispatch — .cdd/unreleased/{N}/gamma-scaffold.md present at the literal path on the cycle branch. Run git cat-file -e origin/cycle/{N}:.cdd/unreleased/{N}/gamma-scaffold.md (or git ls-tree -r origin/cycle/{N} .cdd/unreleased/{N}/gamma-scaffold.md); presence is binary.
    • §5.2 wave-mode dispatch — .cdd/waves/{wave-id}/manifest.md present on origin/main (waves are wave-scoped, not cycle-scoped) AND the sub-issue ↔ wave-manifest discoverability link is auditable per review/SKILL.md §3.11b clause (ii): sub-issue body cites the wave-id, OR the master tracking issue named by the wave manifest links to the sub-issue. α verifies both halves: wave manifest path exists, and at least one of (sub-issue body wave-id citation, master-tracking-issue sub-link) holds.
    • Absent — neither configuration holds. Rule 3.11b will fire RC at β unless the sub-issue body carries a ## Protocol exemption section (escape valve per review/SKILL.md §3.11b recovery path (b)); α surfaces this as known debt in self-coherence.md §Debt before signaling review-readiness. Record the outcome in self-coherence.md §Review-readiness as one of: γ-artifact at canonical §5.1 path / wave-manifest serves under §5.2 (wave-id: {wave-id}; discoverability: {sub-body-cite | master-tracking-link}) / absent — rule 3.11b RC anticipated; sub-issue body §Protocol exemption section relied upon / absent — known debt declared. Derives from: cph cdr-refactor wave 2026-05-18 (master usurobor/cph#11; subs cph#12, #13, #14, #15) — four-of-four subs ran §5.2 without per-sub gamma-scaffold, and α-side surfaced the gap in cph#12 alpha-closeout.md L38–40 and cph#14 alpha-closeout.md L46–51 as a candidate α-side skill patch: α had no row to pre-empt the rule-3.11b surface, so the wave-manifest-as-γ-artifact question only surfaced at β; three distinct β substantive-reads across the four subs (see review/SKILL.md §3.11b clause (ii) anchor) is the friction this row reduces.

SHA citations across path (a) rebase. Path (a) rewrites every α commit's SHA. Any SHA-bearing artifact authored before the rebase — typically self-coherence.md §CDD Trace step table, §ACs header references like "Per-AC oracles run against branch HEAD <SHA>", and §Debt "at HEAD <SHA>" citations — references pre-rebase SHAs that no longer exist on origin/cycle/{N} after the rebase. Those SHAs live only in α's local reflog. β's review/SKILL.md rule 3.13(a) reproducibility check (a future reviewer must be able to resolve cited pointers) catches the invalidation at the next round. Two coherent resolution paths: (i) preferred — run row 14's identity verification at session-start, before any SHA-bearing artifact is authored, so the rebase has nothing to rewrite; (ii) reactive — re-stamp every SHA citation in self-coherence.md and other authored artifacts to the current-branch SHA immediately after the rebase, applying §2.3's intra-doc repetition rule (grep the file for each pre-rebase SHA and fix every occurrence, not just the sites β enumerated by name). Derives from: #380 R1 F1 — α applied path (a) mid-cycle to remediate a worktree-inherited [e-mail] identity leak; the rebase invalidated 9 SHA citation sites in self-coherence.md that α had already authored; β R1 surfaced via rule 3.13(a). α R2 fix used path (ii) cleanly via §2.3 intra-doc rule; this paragraph closes the under-specification at the role-skill layer.

SHA convention for readiness signal. When referencing a commit SHA in self-coherence.md or other artifacts, use one of two stable patterns:

• ✅ Implementation SHA — name the SHA of the last implementation commit (before the readiness-signal commit itself). This SHA is stable because the readiness-signal commit comes after it.
• ✅ Omit SHA and let polling carry HEAD — state "review-ready on branch HEAD" without naming a specific SHA. β polls origin/cycle/{N} and uses whatever HEAD it finds.
• ❌ HEAD SHA at write time — naming the current HEAD in a commit that will itself advance HEAD creates a recursive self-stale: every readiness-signal update invalidates the SHA it just recorded.

Derives from: #301 F3 / α O3 — readiness-signal head SHA recursively self-staled because each refresh advanced HEAD by one commit. β surfaced the drift; α R2 fixed by renaming to "implementation SHA" convention.

Transient vs durable rows. Rows 1 (cycle branch rebased) and 10 (branch CI green) describe external state that can change between the moment you write the row and the moment β reads it. Rows 2–9 and 11 describe artifact / config state α controls. When updating a transient row, record the state you observed and the moment you observed it (e.g. base SHA + current-main SHA at observation time), not a bare claim. Re-validate transient rows immediately before signaling review-readiness (§2.7) and amend the row if drift occurred. Derives from: #266 F1 / F2 — both findings were transient rows written at first signal and not refreshed before β read the artifact.

Polyglot re-audit (row 9). A re-audit loop that exercises only the diff's dominant language has a blind spot for findings in the other languages. For a Go + shell + YAML + Markdown diff, go vet + go test ./... + go test -race covers Go but not header-contract drift in shell, unused-variable / unreachable-branch detection in shell, schema-validity of YAML workflows, or test-surface enumeration completeness across diagnostic-string families. The re-audit must enumerate every language the diff touches and run the matching toolchain for each: shell → bash -n (or shellcheck when available) + grep for unused captures + dead-code scan; YAML → yaml.safe_load (or yamllint); Markdown → table-shape + cross-reference check; Go → go vet + go test ./... + go test -race on touched packages. Tests are part of the diff's surfaces; for each new diagnostic string / branch / error code, verify a "must surface" test exists. Derives from: #274 F2 / F3 / F4 — three of four R1 findings landed in surfaces α's Go-only re-audit did not exercise (smoke header lied about authority; (unparseable manifest) doctor branch had no test; smoke BIN_VERSION_OUT dead capture survived simplification).

Do not signal review-readiness before this gate passes.

• ❌ "RC will tell me what I missed"
• ✅ "β receives a branch that is already author-complete"

2.7. Request review

Once the gate passes:

• append the review-readiness section to .cdd/unreleased/{N}/self-coherence.md as a separate commit (e.g. ## Review-readiness | round 1 | base SHA: ... | head SHA: ... | branch CI: green at HH:MM:SS UTC | ready for β). Commit and push to origin/cycle/{N}. The cycle branch — not main — is the canonical coordination surface during the cycle (cnos.cds/skills/cds/CDS.md §"Coordination surfaces"). Roles poll origin/cycle/{N}, not origin/main; the file lands on main later as part of β's git merge (β step 8). Do not commit cycle-dir files directly to main while the cycle is open.
• immediately begin polling .cdd/unreleased/{N}/beta-review.md and the issue (per §Tracking) — do not ask, just do it. Poll every 60 seconds. This is not optional.
• immediately before signaling review-readiness, re-validate transient pre-review-gate rows (§2.6 rows 1 and 10). If external state has drifted (base SHA moved, branch CI state changed), update the artifact so the gate record is true at the moment of the signal, not at the moment of the original write. Derives from: #266 F1 / F2.
• if β returns RC in .cdd/unreleased/{N}/beta-review.md: fix findings on the branch, append a fix-round section to .cdd/unreleased/{N}/self-coherence.md naming each finding addressed, the commit SHA that addressed it, and any reasoning that β needs to re-verify. Do not ask whether to append, just do it. The artifact thread is the review record.
• after each patch, repeat self-coherence and pre-review for affected surfaces

2.8. Close-out

Close-out mechanism in the sequential bounded dispatch model (§1.6).

In bounded dispatch, α exits after signaling review-readiness. α does not stay alive to observe β's verdict. The close-out is written through a γ-requested re-dispatch of α after β merge (see cnos.cds/skills/cds/CDS.md §"Development lifecycle" → §"State machine" S8 (α close-out) and cnos.cds/skills/cds/CDS.md §"Coordination surfaces" for the re-dispatch mechanism; prompt format in operator/SKILL.md §5.2 v0.1 overlay).

Re-dispatch path (standard):

1. β merges and writes beta-closeout.md
2. γ requests δ to re-dispatch α using the close-out re-dispatch prompt (cnos.cds/skills/cds/CDS.md §"Coordination surfaces"; prompt text in operator/SKILL.md v0.1 overlay)
3. α is re-dispatched, reads .cdd/unreleased/{N}/beta-review.md (approved verdict) and the merged state
4. α writes .cdd/unreleased/{N}/alpha-closeout.md (cycle findings or "no findings"), commits to main, exits

Provisional close-out fallback (when re-dispatch is unavailable):

• α writes alpha-closeout.md at review-readiness time (before exit), explicitly marked [provisional — pending β outcome]
• The provisional close-out contains cycle findings known at that point (diff patterns, friction encountered, process observations)
• γ supplements with PRA observations
• This must be declared as known debt in self-coherence.md §Debt

The close-out is a separate file from self-coherence.md — self-coherence.md carries the gap/mode/ACs/trace/review-readiness across the in-version cycle, and alpha-closeout.md carries the post-merge α-side cycle narrative (summary, friction log, observations, engineering-level reading).

For release-scoped triadic cycles, the cycle directory moves to .cdd/releases/{X.Y.Z}/{N}/ at release time per release/SKILL.md §2.5a — α does not duplicate the close-out elsewhere. The legacy aggregate path .cdd/releases/{X.Y.Z}/alpha/CLOSE-OUT.md is warn-only (pre-#283 form).

Voice: factual observations and patterns only. Do not recommend dispositions — triage is γ's job.

• ❌ "Recommend patching eng/{language} §X now"
• ❌ "β should file #N for this"
• ✅ "Pattern: cross-toolchain non-determinism. Surfaces affected: eng/{language} §X, {runtime-source-tree}/..."
• ✅ "Same class as D1 in prior cycle. Two occurrences this cycle."

---

3. Rules

3.1. Treat skills as generation constraints

Loaded skills constrain authorship now. They are not things β checks for the first time later.

3.2. Do not outsource authoring work to β

Missing sibling updates, missing harness audits, missing AC evidence, and missing debt disclosure are α failures.

3.3. Do not claim structural closure without exhaustive enumeration

If the claim is universal, the audit must be exhaustive.

3.4. Re-audit after every patch

A mid-review fix can invalidate .cdd/unreleased/{N}/self-coherence.md, self-coherence, or AC mapping. Re-read them against HEAD.

3.5. Keep role boundaries clean

α may respond to β findings. α does not rewrite β's judgment frame or release process.

3.6. Implementation contract is δ's, not α's

α MUST NOT change the implementation-contract axes pinned by δ at dispatch time: language, CLI integration target, package scoping, runtime dependencies, existing-binary disposition, JSON/wire contract preservation, backward-compat invariants. If any of these is unpinned in the dispatch prompt's ## Implementation contract section, α MUST surface to γ/δ before coding; α MUST NOT improvise.

The 7 axes form the implementation contract — the architectural shape the cycle ships, distinct from the behavioral ACs the cycle satisfies. Behavioral ACs ("does V validate? does the parser accept the new shape?") test what the implementation does; the implementation contract pins what the implementation is (language, location, integration shape). The two are independent; a behaviorally-correct implementation can still violate the contract by shipping in the wrong language, at the wrong package path, or as a separate binary instead of a cn subcommand.

The mesh of role-side surfaces around this rule:

• γ writes the contract values at dispatch (gamma/SKILL.md §2.5 — γ injects the ## Implementation contract (required for α prompt) template enumerating the 7 axes; γ MUST NOT dispatch with empty rows).
• δ ratifies and enriches if γ under-specified (delta/SKILL.md §2 — δ is two-sided; the inward face is exactly this enrichment).
• β verifies α's implementation conforms before APPROVE (beta/SKILL.md §Role Rules Rule 7 "Implementation-contract coherence" — non-conformance → REQUEST CHANGES, severity D, classification implementation-contract).

The canonical wire-format + 7-axis schema + δ-as-inward-membrane doctrine + four-surface mesh declaration live at cnos.handoff/skills/handoff/dispatch/SKILL.md (Sub 3 of cnos#404, shipped under cnos#417); the role-side surfaces above are its consumer-side realizations.

α's surface is the constraint half: read the ## Implementation contract section in the dispatch prompt; treat every row as a binding pin α cannot relax. If a row is empty or "TBD," that is a γ/δ scaffold gap, not α latitude — surface via the artifact channel (.cdd/unreleased/{N}/ on the cycle branch) before any implementation commit.

Empirical anchor. cnos#389 (Python-not-Go): α implemented V in Python despite cnos being Go-native. The α SKILL did not name "language" as a δ-pinned axis; α had room to improvise. cnos#391 (wrong package scoping + separate binary): α placed the Go port in a separate binary at the wrong package path; α improvised on package scoping and CLI integration. In both cycles β's behavior-only AC oracles APPROVE-d without catching the implementation-contract drift; cnos#392 was the first cycle where δ pinned the contract at dispatch as an ad-hoc operator action, and the cycle succeeded specifically because of it. cnos#393 makes that ad-hoc operator action doctrine; this rule is α's role-side enforcement.

• ❌ "The dispatch didn't say which package to use; I'll pick pkg/foo/"
• ❌ "Python's faster for this; I'll switch from Go (the dispatch said Go but didn't justify it)"
• ❌ "The dispatch said cn subcommand but a standalone binary is simpler; I'll ship that and note it in self-coherence"
• ✅ "Implementation contract row 3 (package scoping) is unpinned; surfacing to γ via the artifact channel before coding"
• ✅ "Every row in ## Implementation contract is populated; proceeding with the implementation; every diff hunk maps to one or more pinned rows"

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4. Resumption

When dispatched to an artifact path that already contains a section manifest, α follows the resumption protocol per cnos.cds/skills/cds/CDS.md §"Large-file authoring rule" → §"Resumption protocol":

1. Read existing manifest — identify planned sections and completion state
2. Verify completed sections — confirm existing sections are coherent and complete
3. Continue from next section — append to the file from the first uncompleted section
4. Update manifest on section completion — add section name to completed: list

α-specific resumption cases:

• .cdd/unreleased/{N}/self-coherence.md — most common case. Sections: [Gap, Skills, ACs, Self-check, Debt, CDD Trace, Review-readiness]. If α resumes mid-self-coherence, read existing sections for context, continue from next uncompleted section.
• Fix-round appendices — when β returns RC and α resumes to fix findings, append fix-round sections to existing self-coherence.md without rewriting completed sections.
• alpha-closeout.md — if α is re-dispatched for close-out and finds a partial close-out, read completed sections and continue.

Never restart completed sections. Committed sections represent settled α work; resumption preserves that work and continues forward.

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5. Embedded Kata

Scenario

A branch changes a schema-bearing parser and one sibling command that consumes it. A shell harness in test support also writes the same schema.

Task

Produce the α-side evidence needed before requesting review:

1. peer enumeration
2. harness audit
3. self-coherence with AC mapping
4. pre-review checklist outcome

Expected artifacts

• .cdd/unreleased/{N}/self-coherence.md with step 7 trace
• self-coherence section with AC mapping
• one command or note showing the peer / harness audit
• explicit known debt or explicit "none"

Common failures

• audits only the changed file
• omits shell / CI harnesses
• claims "done" without mapping ACs to evidence
• requests review before CI on head commit