refactor(clients): extract low-fanout config export formats (S13 1/5)

[lidge-jun]

Summary

• Extract OMP, DSH, MCode and ZCode configuration builders into seven focused leaves with shared contracts, constants and model metadata.
• Preserve all 96 public exports, the original import path, declaration bodies, singleton/dispatch identity and serialized configuration/owned fragments. The facade decreases from 1,990 to 1,298 lines; layer410 finishes the remaining families and paths.
• Add identity and fixed-byte/fragment assertions in the existing client export test. Original assertions and fixtures are retained.
• 707 original lines moved; 109 non-move lines. Review with git diff --color-moved=dimmed-zebra be81013fa...HEAD -- src/clients tests/config/client-config-export.test.ts. The audited pure-move exception and plan are included.

Stack S13

Layer	Branch	Base	Status
400, this PR	codex/split-clients-config-export-a	dev	review; see current-head checks
410	codex/split-clients-config-export-b	codex/split-clients-config-export-a	planned
420	codex/split-cli-opencode	codex/split-clients-config-export-b	planned
430	codex/split-cli-minimax	codex/split-cli-opencode	planned
440	codex/split-integrations-state	codex/split-clients-config-export-b	planned

The temporary verification prerequisite #3610 has landed externally. This PR is now restacked on dev at be81013, which contains that fix and the intervening integration changes. Only our own commits were replayed; the parent-relative diff contains nine source/test paths plus three plan documents.

Review this layer only. No merge or auto-merge is requested.

Verification

• Verified head: bbf8d3c. The latest commit repairs only the three planning documents; source/test diff from412dcba4 is empty. The complete documented verifier was executed at this new head: typecheck,442focusedtests,privacy and full18402pass/16skip/0fail passed, followed by remote/local identity checks and a fresh clean cxc receipt. Historical receipts remain archived separately. GitHub's current-head check panel is the hosted-CI source of truth.
• All three actionable CodeRabbit document threads are resolved. Independent operational review also passed, and the mismatched-HEAD negative probe rejects before the SSH stage. No source or test assertions were changed for these review fixes.
• Document review fixes: distinguish six S04 members from dependency depth3; retain the five-deep cap and retire obsolete linear instructions; make landed3610/dev authority unambiguous; replace the shared-checkout recipe with an isolated, fail-closed SSH verifier. Independent operational re-review passed, including expectedHEAD and cleanliness checks inside the receipt command before/after SSH.
• git diff --exit-code 7d4a37544 HEAD -- src/clients/config-export.ts src/clients/config-export tests/config/client-config-export.test.ts: passed; all nine source/test blobs are unchanged.
• New-base independent candidate audit: PASS;158bindings/96exports resolve,693modules/226inline-import edges checked with no facade/leaf return cycle. Independent actual restack identity review also passed: all nine source/test modes and blobs match the reviewed split, with exactly those paths plus three plan documents against the verified base.
• git diff --check: passed. Seven new leaves measure69–150lines.
• Historical7d4proof: remote typecheck,442focusedtests,privacy and full18200pass/16skip/0fail; clean bound receipt. Two mutation red/restored-green checks protect the unchanged source. These earlier results are not substituted for fresh412proof.
• No local test suite ran. Preserved7d4 and earlier refs; scoped restack used --no-update-refs and an exact-old-head force-with-lease.

Checklist

• Scope stays focused and avoids unrelated cleanup.
• Docs or release notes were updated when needed.
• Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults.

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📒 Files selected for processing (3)

• devlog/_plan/260905_now_split_train/000_plan.md
• devlog/_plan/260905_now_split_train/003_parent_decisions.md
• devlog/_plan/260905_now_split_train/400_clients_config_export_a.md

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---

📝 Walkthrough

Walkthrough

The change splits config-export.ts into shared foundations and four client exporter modules. The original facade preserves public exports. Tests verify module identities, serialized output, summaries, formats, and managed contributions.

Changes

Config Export Split

Layer / File(s)	Summary
Split plan and execution contracts devlog/_plan/260905_now_split_train/000_plan.md, devlog/_plan/260905_now_split_train/003_parent_decisions.md, devlog/_plan/260905_now_split_train/400_clients_config_export_a.md	The planning documents define pure-move constraints, dependency rules, verification requirements, leaf partitions, facade forwarding, and acceptance criteria.
Shared export contracts and metadata src/clients/config-export/contracts.ts, src/clients/config-export/constants.ts, src/clients/config-export/model-metadata.ts, src/clients/config-export.ts	Shared interfaces, constants, metadata helpers, and re-exports move into leaf modules. The original facade forwards the public API.
Client exporter leaf modules src/clients/config-export/omp.ts, src/clients/config-export/dsh.ts, src/clients/config-export/mcode.ts, src/clients/config-export/zcode.ts	The OMP, DSH, MCode, and ZCode schemas, builders, summarizers, and managed-contribution helpers move into dedicated modules.
Facade wiring and serialization validation tests/config/client-config-export.test.ts	Tests verify canonical re-exports, exact serialized output, summary counts, formats, and managed contribution paths and values.

Estimated code review effort: 4 (Complex) | ~45 minutes

Merge Risk: ⚪ Minimal · up to bbf8d

This change modularizes client configuration exporters while retaining the existing facade and validating exported identities and generated configuration output. No actionable current-head merge risk remains.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 42.11% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 38 functions across 9 files. (3 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: extracting low-fanout client configuration export formats. The scope marker is relevant to the staged refactor.

Full details: Docstring Coverage

Explanation

Docstring coverage is 42.11% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 38 functions across 9 files. (3 skipped: 3 unsupported.)

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🧪 Generate unit tests (beta)

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• Commit unit tests in branch codex/split-clients-config-export-a

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[github-actions]

✅ Deterministic PR hygiene checks passed.

[lidge-jun]

리뷰 · 우선순위 54 / 80

이 PR은 src/clients/config-export.ts 모노리스(지금 dev HEAD f008a553d 기준 약 1990줄)에서 팬아웃이 낮은 OMP/DSH/MCode/ZCode 포맷을 잎 모듈로 빼는 S13 스택의 1층입니다. 목표 파일에 config-export/ 디렉터리는 아직 없고, 이 레이어가 그 디렉터리를 처음 만듭니다. 동작 변경 없이 import 경로와 public export를 유지하는 pure-move이며, 본문도 “머지/오토머지 요청 없음 · draft · exact-head 게이트 대기”라고 명시합니다.

잎은 constants.ts(69), contracts.ts(150), model-metadata.ts(113), omp.ts(104), dsh.ts(132), mcode.ts(83), zcode.ts(92)입니다. 파사드는 1990→1298줄로 줄었고, OpenCode/Pi/Hermes 등 남은 가족은 L2 이후로 미룹니다. providerCodexAccountMode는 dsh.ts로, sanitizeCodexReasoningEfforts는 mcode.ts로 같이 옮겨져서 파사드 import만 사라진 것처럼 보이는 부분은 실제로는 잎에 남아 있습니다. 테스트는 tests/config/client-config-export.test.ts에 싱글톤 identity와 직렬화 바이트/fragment 고정 단언을 추가했습니다.

현재 dev의 방향(#3521 anthropic numeric context, #3508 log filter, #3608 google location)과는 겹치지 않는 모듈화 열차입니다. 다만 types/config 대형 분할 캠페인과 같은 철학의 RESOLVABLE_NOW 스택이라, 중간 잔여가 400줄을 넘는 것은 계획(INTERMEDIATE-RESIDUAL-01)대로 L2가 이어질 전제입니다. raw move diff는 크지만 non-move는 작다고 주장하므로, 리뷰는 git diff --color-moved=dimmed-zebra 기준으로 보는 편이 맞습니다.

초안이고 CI가 아직 QUEUED이며, 전체 스위트 실패(기존 route-registry 등)를 본문에서 인정합니다. 스택 깊이 5 제한 안의 S13 1/5이므로, 이 레이어만 단독으로 “완성”으로 보면 안 됩니다.

src/clients/config-export.ts - re-export 배럴이 public 표면을 유지합니다. 잔여 1298줄은 L2 전제라 이번 PR만으로 400줄 한도를 만족시키지 않습니다. 의도된 intermediate residual인지 본문/decade doc과 맞춰 확인하세요.

src/clients/config-export/dsh.ts / mcode.ts - direct-mode·sanitize 의존성이 잎으로 따라갔습니다. pure-move 주장과 맞는지 identity 테스트가 일부를 잡지만, OpenCode 쪽 canonicalizeReasoningEfforts 잔여는 파사드에 남아 계층이 섞여 보입니다(계획상 L2).

tests/config/client-config-export.test.ts - facade===leaf 싱글톤과 omp/dsh/mcode/zcode 바이트 고정은 회귀에 좋습니다. 다만 golden 문자열이 길어서 이후 포맷 미세 변경 때 깨지기 쉽습니다.

devlog/_plan/260905_now_split_train/ - 000/003/400 문서가 두껍습니다. 리뷰 범위는 이 레이어 코드+테스트로 한정하라는 본문 지시와 맞습니다.

라인 없음 - exact-head typecheck/focused/privacy/full suite가 아직 진행 중이라고 했고 security 체크리스트도 미체크입니다. draft 유지가 맞습니다.

메인테이너의 판단이 필요한 지점

• S13 L1을 dev에 ind 넣을지, L2(OpenCode 등)까지 쌓인 뒤 한 번에 볼지
• 잔여 1298줄을 “허용된 intermediate”로 받을지, L1에서 더 쪼개 400 근처까지 내릴지
• 기존 full-suite 실패(route-registry 등)와 이 PR을 같은 게이트로 묶을지

너의 추천
지금은 머지하지 말고 draft로 두세요. exact-head 게이트와 구현 리뷰가 끝난 뒤에만 ready로 올리고, L2 브랜치(codex/split-clients-config-export-b)가 이 tip을 base로 잡는지 확인한 다음 스택 순서로 합치세요. 동작 버그 수정 PR과 섞어 리베이스하지 마세요.

이 댓글은 grok-bot이 작성했습니다

[chatgpt-codex-connector]

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This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-05T04:59:40.692858Z	412dcba	Draft marked ready

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Inline comments:
In `@devlog/_plan/260905_now_split_train/000_plan.md`:
- Around line 45-46: Update the open-stack depth-cap statement in the plan to
document the S04 depth-six exception, including layer 105, so executor and audit
calculations align while preserving the existing five-layer cap for other
stacks.

In `@devlog/_plan/260905_now_split_train/003_parent_decisions.md`:
- Around line 157-159: Make the landed `#3610` state authoritative: in
devlog/_plan/260905_now_split_train/003_parent_decisions.md:157-159, mark the
open-prerequisite paragraph historical or remove it; in
devlog/_plan/260905_now_split_train/400_clients_config_export_a.md:395-407,
update prerequisite and retargeting details to reflect `#3610`’s landed state; and
in 400_clients_config_export_a.md:417-429, mark the superseded afdd rebase
workflow historical and remove open-prerequisite retargeting instructions. Leave
only the current branch, dev base, prerequisite status, and exact head
be81013fab6d83ff630ca5f38e7881678a303871 for execution.

In `@devlog/_plan/260905_now_split_train/400_clients_config_export_a.md`:
- Around line 371-374: Replace the shared-checkout verification command in the
plan with the reviewed isolated runner, using a temporary checkout instead of
~/ocx-ci/opencodex and avoiding any shared remote-seed switching; also remove or
update the superseded marker near the related command.

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📥 Commits

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📒 Files selected for processing (12)

• devlog/_plan/260905_now_split_train/000_plan.md
• devlog/_plan/260905_now_split_train/003_parent_decisions.md
• devlog/_plan/260905_now_split_train/400_clients_config_export_a.md
• src/clients/config-export.ts
• src/clients/config-export/constants.ts
• src/clients/config-export/contracts.ts
• src/clients/config-export/dsh.ts
• src/clients/config-export/mcode.ts
• src/clients/config-export/model-metadata.ts
• src/clients/config-export/omp.ts
• src/clients/config-export/zcode.ts
• tests/config/client-config-export.test.ts

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[lidge-jun]

Superseded by aggregate PR #3668, admin-merged into dev as 6585e6a after exact-head CI and tested-tree verification. This original PR was not individually merged; its rebased content and historical records were consolidated in #3668. The original branch is preserved. Further unimplemented debt layers remain deferred.

[lidge-jun]

Landed via #3668 at 6585e6a