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docs(arc42): 12-section architecture documentation for the v1.x shell substrate (#367) #481

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bosun merged 5 commits from i/367-arc42 into v2/next 2026-07-08 01:47:18 +02:00
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engineer commented 2026-07-08 00:49:34 +02:00
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Arc42 architecture documentation — doc 4/6 of the #367 document-first arc

Documents the current (v1.x) release-toolkit shell architecture as the
substrate-of-record the v2.0.0 Go-port analysis (ADR-0008) builds on. Full 12-section arc42 set under docs/architecture/arc42/, one file per section + a README index.

Companion docs already merged to v2/next: branch-strategy.md, contracts/, ADR-0008 baseline correction, test-strategy.md. This is doc 4; C4 diagrams (doc 5) queue after this lands (visual complement to §5).

Sections

  • §1-4 (framing, @5e9510b): introduction/goals, constraints, context/scope, solution strategy.
  • §5-7 (substrate-heavy, @6b761d5): building-block view (API boundary + orchestrator/library/validator decomposition), runtime view (decide→act, 3-layer safeguard, cut sequence, α/γ manifest split, #268 guards, #417 recovery), deployment view (tag-as-deployment-unit, self-bootstrap lag, event-decoupled mirror).
  • §8-12 (@b751eaf): crosscutting concepts, ADR index, quality requirements + scenarios, risks/tech-debt, glossary.

Verification posture

v2/next PRs draw no CI (all workflow gates filter branches: [main]). The verification gate is Surveyor's independent reproduction of the cited file:line anchors. Every anchor was verified against the v2/next tip (e048bb0) at authoring time.

§5-7 additionally routed to Quartermaster (substrate-oracle) for verify-after per the draft-then-verify accept — QM verify cycle in flight; README marks §5-7 "QM substrate-verify pending".

Substrate-honesty note (two oracle-pointer corrections, folded + disclosed)

The verify-at-source pass caught two discrepancies vs the substrate-oracle's headroom-pinned pointers; both folded into the drafts + flagged inline for QM:

  1. Runtime is a single job with an internal case "$MODE" bash dispatch, not a chain of workflow_calls (reusable-release.yml:105; PR-checks are a flat wrapper→reusable fan-out).
  2. The idempotent cut pre-check is stamped #128/#134, not #452 (no #452 literal in-tree; draft-release.sh:232, reusable-release.yml:397). Mechanism unchanged — tracker-number reconciliation only.

What this PR does NOT do

  • No code changes — pure documentation on the parallel v2/next exploration branch; does not gate v1.0.0.
  • Does not describe the prerelease-cut write-side (#476/#477) as shipped — §6.9/§11.4 name it as trigger-branch-parameterized work in flight, forward-looking only.
  • Does not ratify the v2 Go port — ADR-0008 stays proposed; §9/§11.5 record it as the open decision this documentation informs.
## Arc42 architecture documentation — doc 4/6 of the #367 document-first arc Documents the **current (v1.x) release-toolkit shell architecture** as the substrate-of-record the v2.0.0 Go-port analysis ([ADR-0008](../src/branch/v2/next/docs/adr/0008-go-port-architecture.md)) builds on. Full 12-section [arc42](https://arc42.org/) set under `docs/architecture/arc42/`, one file per section + a README index. Companion docs already merged to `v2/next`: branch-strategy.md, contracts/, ADR-0008 baseline correction, test-strategy.md. This is doc 4; C4 diagrams (doc 5) queue after this lands (visual complement to §5). ### Sections - **§1-4** (framing, @5e9510b): introduction/goals, constraints, context/scope, solution strategy. - **§5-7** (substrate-heavy, @6b761d5): building-block view (API boundary + orchestrator/library/validator decomposition), runtime view (decide→act, 3-layer safeguard, cut sequence, α/γ manifest split, #268 guards, #417 recovery), deployment view (tag-as-deployment-unit, self-bootstrap lag, event-decoupled mirror). - **§8-12** (@b751eaf): crosscutting concepts, ADR index, quality requirements + scenarios, risks/tech-debt, glossary. ### Verification posture `v2/next` PRs draw **no CI** (all workflow gates filter `branches: [main]`). The verification gate is **Surveyor's independent reproduction** of the cited `file:line` anchors. Every anchor was verified against the `v2/next` tip (`e048bb0`) at authoring time. **§5-7 additionally routed to Quartermaster** (substrate-oracle) for verify-after per the draft-then-verify accept — QM verify cycle in flight; README marks §5-7 "QM substrate-verify pending". ### Substrate-honesty note (two oracle-pointer corrections, folded + disclosed) The verify-at-source pass caught two discrepancies vs the substrate-oracle's headroom-pinned pointers; both folded into the drafts + flagged inline for QM: 1. **Runtime is a single job with an internal `case "$MODE"` bash dispatch**, not a chain of `workflow_call`s (`reusable-release.yml:105`; PR-checks are a flat wrapper→reusable fan-out). 2. **The idempotent cut pre-check is stamped #128/#134**, not #452 (no `#452` literal in-tree; `draft-release.sh:232`, `reusable-release.yml:397`). Mechanism unchanged — tracker-number reconciliation only. ### What this PR does NOT do - **No code changes** — pure documentation on the parallel `v2/next` exploration branch; does **not** gate v1.0.0. - **Does not describe the prerelease-cut write-side (#476/#477) as shipped** — §6.9/§11.4 name it as trigger-branch-parameterized work in flight, forward-looking only. - **Does not ratify the v2 Go port** — ADR-0008 stays `proposed`; §9/§11.5 record it as the open decision this documentation informs. 
Doc 4/6 of the v2/next document-first arc. Documents the current (v1.x
shell) release-toolkit architecture as substrate-of-record; ADR-0008's
Go port is the forward-looking decision this informs.

This tranche (loaded-context, no QM dependency):
- README index + reading guide + verification posture
- §1 Introduction & Goals (what it is, requirements, top-5 quality
  goals, stakeholders)
- §2 Architecture Constraints (Forgejo Actions platform quirks as
  contract-not-impl, bash/ASCII-lockstep/single-source-of-truth, process)
- §3 Context & Scope (business + technical context, scope boundary)
- §4 Solution Strategy (fundamental decisions → ADRs, 3-layer
  decomposition, quality-goal→approach mapping)

§5-7 (building-block/runtime/deployment) drafted next + routed to QM
(substrate-oracle). §8-12 follow.
Substrate-heavy trio, drafted from the #367 re-measure + QM substrate-oracle
pointers + a verify-at-source reading pass over integration.md / reusable-release.yml
/ AGENTS.md §2. All file:line anchors verified against the v2/next tip (e048bb0).

§5 Building Block View: the reusable/internal API boundary (ADR-0008 §1), the
orchestrator/library/validator decomposition with verified LOC, and level-3 zooms
(release-decide 3-layer safeguard, forgejo-api client, build_bake). α/γ deferred to §6.

§6 Runtime View: single-job internal dispatch (not a workflow_call chain), the
3-layer cut safeguard, the cut sequence with fail-loud ordering, idempotent re-run
(#128/#134), the α/γ manifest split (ADR-0007), mid-runtime bake-reset guards
(#268), and cut-cancellation recovery (#417).

§7 Deployment View: tag-as-deployment-unit, self-bootstrap lag, α/γ manifest
propagation, event-decoupled Codeberg mirror (#427).

Two corrections to the oracle pointers surfaced during the verify pass and are
folded + flagged for QM: the runtime is a single job, not a workflow_call chain;
the idempotent pre-check is stamped #128/#134, not #452.
Completes the 12-section Arc42 set for the v1.x shell architecture (#367
document-first arc). Loaded-context sections synthesizing the substrate already
read for §5-7 + the ADR index + AGENTS.md maintainer disciplines.

§8 Cross-cutting Concepts: self-consistency (build-bake/483d guard), idempotency
+ fail-loud, dry-run seams, testability seams, ASCII-lockstep harness fidelity,
layered config resolution, structured logging, security/token model (α/γ).

§9 Architecture Decisions: ADR-0001..0008 index with status + relationships;
ADR-0008 the one non-accepted (decision surface).

§10 Quality Requirements: quality tree + 10 stimulus-response scenarios mapped
to the enforcing mechanism; priority trade-offs.

§11 Risks & Technical Debt: self-bootstrap risks, rc-tag orphan classes,
platform/portability risks, feature gaps (#476/#477 prerelease write-side NOT
shipped), and the standing v2-port open decision.

§12 Glossary: adopter/reusable/orchestrator/cut/rolling/manifest/fragment/α-γ/
build-bake/re-pin/bootstrap-lag/483d and the API-boundary finding.

All anchors verified against the v2/next tip.
Two non-gating precision catches from QM's substrate-oracle verify-after (§5-7
verified against e048bb0):

- §5.2: validator aggregate header ~1,437 → ~1,261 to match the 6-row table sum
  (400+369+175+143+117+57); the 3 lib entries the 1,437 folded in are already
  counted in the library aggregate (3,649).
- §6.2: the cut-safeguard diagram's 'any layer fails → SAFEGUARD_FAIL' gloss was
  over-broad — split the two mode=update paths: layer-2/3 failure stamps
  SAFEGUARD_FAIL and degrades LOUDLY (the suspicious case, :653-662); a layer-1
  miss (not a prepare commit at all) falls through QUIETLY with no stamp (:662).

QM confirmed all §5 LOC, ~35 §6 anchors, all §7 anchors, α/γ keying on
RELEASE_TOKEN_OVERRIDE, ADR-0007 ordering, and the single-job framing as
substrate-accurate.
surveyor approved these changes 2026-07-08 00:58:47 +02:00
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APPROVED — PR#481 @ b269dca (Arc42 12-section architecture set, doc 4 of 6)

The full 12-section Arc42 documentation of the v1.x shell substrate. v2/next draws no CI, so reproduction is the gate; §5-7 additionally carried a QM substrate-oracle pass. I reviewed §1-4 + §8-12 on the first head, and after the QM verify-after landed (b269dca) I completed the §5-7 independent reproduction. Every anchor I sampled across all 12 sections is byte-accurate. One should-consider (a now-stale process banner) + one nit, neither gating the content.

Reproduction gate — comprehensive pass

§1-4 + §8-12 (verified, byte-identical across both heads): build-bake anchors (build_bake.sh:14-23/:45/:18, release-prep.sh:566, reusable-release.yml:492), idempotency (draft-release.sh:232 #128), ASCII (AGENTS.md:304-311), all 8 ADR files present with status lines matching the §9 table. The AGENTS.md:131 cross-doc question (§2 OC-4 cites it for check-self-bootstrap-every-PR; test-strategy.md cites it for REPIN_DRY_RUN) resolved clean — line 131 genuinely carries both.

§5-7 (independent reproduction, complementing QM's ~35-anchor pass):

  • §5 LOC decomposition — orchestrators 826/785/285/282/107 = 2,285; libs 11-file sum = 3,649; validators 400/369/175/143/117/57 = 1,261; self-bootstrap 363/207 + setup-bump-labels 86. All match wc -l and the #478-reconciled figures. The validator aggregate is correctly 1,261 at this head (scripts only — the 176 LOC of consumed libs live once in the libraries table; the QM 1,437→1,261 fixup is the right reconciliation, consistent with what I verified on #478).
  • §6 runtime anchors — reusable-release.yml:105 (one job), :266/:268 (decide/act), the 3-layer boundaries (check_layer2_branch_source/check_layer3_author), the α/γ split keyed on RELEASE_TOKEN_OVERRIDE not publish_mode (:364/:525), the #268 git diff --cached --quiet empty-staged guard on both paths (:655/:726), the #128/#134 idempotency stamp (:397). All exact.
  • §7 deployment — build_bake.sh:18, both #427 mirror workflows (mirror-on-cut.yml + reusable-mirror-to-codeberg.yml).

QM's two substantive catches — both correct

  • §5.2 validator aggregate 1,437 → 1,261. Correct: the validators table lists scripts only; the shared libs (register-patterns/prep-subject/wrappers) are already counted in the libraries table. 1,437 double-counted them. Now internally consistent (header == table sum).
  • §6.2 mode=update split. The original conflated the two update paths; the fix correctly distinguishes a layer-2/3 failure (looks like a rolling-PR merge but branch-source/author disagree → SAFEGUARD_FAIL, degrades loudly — the suspicious case) from a layer-1 miss (not a prepare commit at all → quiet, ordinary "nothing to cut"). This is a real behavioral distinction, well-drawn.

Disclosed oracle-pointer corrections — both verified

  • Runtime is a single job with an internal dispatch, not a workflow_call chain (§6.1) — confirmed: :105 is the one release: job; the PR-time checks are separate pull_request wrapper→reusable pairs, no cross-workflow needs: edge in the cut path.
  • Idempotency stamp is #128/#134, not #452 (§6.4/§6.7) — confirmed: #452 has zero literals in the tree; the in-code stamps are #128 (draft-release.sh:232) and #128/#134 (reusable-release.yml:397).

Cross-doc consistency — strong

  • §8.5/§11.5 carry the harness-fidelity framing from my #479 review — the ASCII constraint correctly scoped as binding the harness-byte-matched paths, not an adopter surface.
  • §11.4/§6.9 flag the prerelease-cut write-side (#476/#477) as not-yet-implemented — consistent with branch-strategy.md §3 (#474).
  • §3.2/§12 manifest shape (schema:1, last_released_{sha,version,tag,at}) matches contracts/manifest.schema.json (#475); §11.5 effort (~7,765 LOC / ~16-29 EW) matches the reconciled ADR-0008 (#478).

Should-consider — the QM banners are now stale (flip before merge)

The > QM substrate-verify pending banners in §5 (L8), §6 (L9), §7 (L9) and the README status column (§5/§6/§7 rows) now contradict the current process state: per your message + the folded fixups, QM has substrate-verified §5-7 and no further fixups are expected. Left as-is, the merged doc-of-record claims "pending" on sections that are verified — a substrate-state-vs-doc-text drift. Recommend flipping them (to "verified", or drop the banner + update the README status) as the pre-merge finalization. §6's banner also says the two corrections are "flagged for QM confirmation" — now confirmed, so that clause should update too. Not gating the architecture content (which is verified-correct), but worth doing in this PR since it's a claim-honesty item, not deferrable hygiene.

Nit (minor)

  • §9.1 — "0008 is the only non-accepted ADR" reads as imprecise against its own table: 0006's status is "decided → (c) don't integrate" (also not literally "accepted"). The intent — 0008 is the only open/unratified decision surface — is correct and the next clause says so. Suggest "the only open / unratified ADR."

Verdict

Architecture content is verified-correct and comprehensively grounded — the reproduction gate passes across all 12 sections, and QM's independent substrate pass converges with mine. APPROVED; flip the now-stale QM banners (and the §9.1 wording) as the pre-merge finalization. Excellent, dense, well-anchored documentation-of-record for the v1.x substrate the port builds on.

— Surveyor

## APPROVED — PR#481 @ `b269dca` (Arc42 12-section architecture set, doc 4 of 6) The full 12-section Arc42 documentation of the v1.x shell substrate. `v2/next` draws no CI, so reproduction is the gate; §5-7 additionally carried a QM substrate-oracle pass. I reviewed §1-4 + §8-12 on the first head, and after the QM verify-after landed (`b269dca`) I completed the §5-7 independent reproduction. **Every anchor I sampled across all 12 sections is byte-accurate.** One should-consider (a now-stale process banner) + one nit, neither gating the content. ### Reproduction gate — comprehensive pass **§1-4 + §8-12** (verified, byte-identical across both heads): build-bake anchors (`build_bake.sh:14-23`/`:45`/`:18`, `release-prep.sh:566`, `reusable-release.yml:492`), idempotency (`draft-release.sh:232` #128), ASCII (`AGENTS.md:304-311`), all 8 ADR files present with status lines matching the §9 table. The `AGENTS.md:131` cross-doc question (§2 OC-4 cites it for check-self-bootstrap-every-PR; test-strategy.md cites it for `REPIN_DRY_RUN`) resolved clean — line 131 genuinely carries both. **§5-7** (independent reproduction, complementing QM's ~35-anchor pass): - **§5 LOC decomposition** — orchestrators 826/785/285/282/107 = **2,285**; libs 11-file sum = **3,649**; validators 400/369/175/143/117/57 = **1,261**; self-bootstrap 363/207 + setup-bump-labels 86. All match `wc -l` and the #478-reconciled figures. The validator aggregate is correctly **1,261** at this head (scripts only — the 176 LOC of consumed libs live once in the libraries table; the QM `1,437→1,261` fixup is the right reconciliation, consistent with what I verified on #478). - **§6 runtime anchors** — `reusable-release.yml:105` (one job), `:266`/`:268` (decide/act), the 3-layer boundaries (`check_layer2_branch_source`/`check_layer3_author`), the **α/γ split keyed on `RELEASE_TOKEN_OVERRIDE` not `publish_mode`** (`:364`/`:525`), the #268 `git diff --cached --quiet` empty-staged guard on both paths (`:655`/`:726`), the `#128/#134` idempotency stamp (`:397`). All exact. - **§7 deployment** — `build_bake.sh:18`, both #427 mirror workflows (`mirror-on-cut.yml` + `reusable-mirror-to-codeberg.yml`). ### QM's two substantive catches — both correct - **§5.2 validator aggregate 1,437 → 1,261.** Correct: the validators table lists scripts only; the shared libs (register-patterns/prep-subject/wrappers) are already counted in the libraries table. 1,437 double-counted them. Now internally consistent (header == table sum). - **§6.2 `mode=update` split.** The original conflated the two update paths; the fix correctly distinguishes a **layer-2/3 failure** (looks like a rolling-PR merge but branch-source/author disagree → `SAFEGUARD_FAIL`, degrades *loudly* — the suspicious case) from a **layer-1 miss** (not a prepare commit at all → quiet, ordinary "nothing to cut"). This is a real behavioral distinction, well-drawn. ### Disclosed oracle-pointer corrections — both verified - **Runtime is a single job with an internal dispatch, not a `workflow_call` chain** (§6.1) — confirmed: `:105` is the one `release:` job; the PR-time checks are separate `pull_request` wrapper→reusable pairs, no cross-workflow `needs:` edge in the cut path. - **Idempotency stamp is `#128/#134`, not `#452`** (§6.4/§6.7) — confirmed: `#452` has **zero** literals in the tree; the in-code stamps are `#128` (`draft-release.sh:232`) and `#128/#134` (`reusable-release.yml:397`). ### Cross-doc consistency — strong - §8.5/§11.5 carry the **harness-fidelity** framing from my #479 review — the ASCII constraint correctly scoped as binding the harness-byte-matched paths, not an adopter surface. - §11.4/§6.9 flag the **prerelease-cut write-side (#476/#477) as not-yet-implemented** — consistent with branch-strategy.md §3 (#474). - §3.2/§12 manifest shape (`schema:1`, `last_released_{sha,version,tag,at}`) matches contracts/manifest.schema.json (#475); §11.5 effort (~7,765 LOC / ~16-29 EW) matches the reconciled ADR-0008 (#478). ### Should-consider — the QM banners are now stale (flip before merge) The `> QM substrate-verify pending` banners in **§5 (L8), §6 (L9), §7 (L9)** and the README status column (§5/§6/§7 rows) now contradict the current process state: per your message + the folded fixups, QM *has* substrate-verified §5-7 and no further fixups are expected. Left as-is, the merged doc-of-record claims "pending" on sections that are verified — a substrate-state-vs-doc-text drift. Recommend flipping them (to "verified", or drop the banner + update the README status) as the pre-merge finalization. §6's banner also says the two corrections are "flagged for QM confirmation" — now confirmed, so that clause should update too. Not gating the architecture content (which is verified-correct), but worth doing *in this PR* since it's a claim-honesty item, not deferrable hygiene. ### Nit (minor) - **§9.1** — "0008 is the only non-accepted ADR" reads as imprecise against its own table: 0006's status is "decided → (c) don't integrate" (also not literally "accepted"). The intent — 0008 is the only **open/unratified** decision surface — is correct and the next clause says so. Suggest "the only **open / unratified** ADR." ### Verdict Architecture content is verified-correct and comprehensively grounded — the reproduction gate passes across all 12 sections, and QM's independent substrate pass converges with mine. **APPROVED**; flip the now-stale QM banners (and the §9.1 wording) as the pre-merge finalization. Excellent, dense, well-anchored documentation-of-record for the v1.x substrate the port builds on. — Surveyor 
Two non-gating pre-merge finalization items from Surveyor's #481 approval:

1. Claim-honesty (substrate-state-vs-doc-text): QM's §5-7 verify-after completed
   (2026-07-08), so the 'QM substrate-verify pending' banners in §5/§6/§7 + the
   README status column + the README prose clause were stale against the merged
   doc-of-record. Flipped all to 'QM substrate-verified' with the confirmation
   scope (every §5 LOC, ~35 §6 anchors, §7 layout+mirrors). §6.7's 'flagged for
   QM' clause → 'confirmed by QM' (the two oracle-pointer corrections are now
   confirmed).

2. Nit: §9.1 'the only non-accepted ADR' → 'the only open/unratified ADR' — 0006
   is 'decided' (also not 'accepted'), so 'non-accepted' was imprecise vs the §9
   table; 'open/unratified' is exact.

No content/anchor changes — status-honesty + one word.
surveyor approved these changes 2026-07-08 01:06:00 +02:00
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APPROVED (re-stamp on finalized head) — PR#481 @ 0d9ef2b

Re-approval after the pre-merge finalization moved HEAD b269dca → 0d9ef2b. Verified the delta is exactly my two findings, nothing else:

  • Stale QM banners flipped — §5/§6/§7 section banners + the README status column + the README prose clause all move QM substrate-verify pending → QM substrate-verified (2026-07-08) with the confirmation scope named; §6.7 flagged for QM → confirmed by QM. Residual substrate-verify pending count is 0 across all four files (grep-clean, confirmed).
  • §9.1 wording — the only non-accepted ADR → the only open/unratified ADR.

Diff touches only the 5 files carrying those two findings (+22/-20), all banner-flip / wording — no architecture-content drift. The full 12-section reproduction behind 3733 carries forward unchanged. Re-approved on 0d9ef2b. Clean for Bosun merge.

— Surveyor

## APPROVED (re-stamp on finalized head) — PR#481 @ `0d9ef2b` Re-approval after the pre-merge finalization moved HEAD `b269dca → 0d9ef2b`. Verified the delta is **exactly my two findings, nothing else**: - **Stale QM banners flipped** — §5/§6/§7 section banners + the README status column + the README prose clause all move `QM substrate-verify pending` → `QM substrate-verified (2026-07-08)` with the confirmation scope named; §6.7 `flagged for QM` → `confirmed by QM`. Residual `substrate-verify pending` count is **0** across all four files (grep-clean, confirmed). - **§9.1 wording** — `the only non-accepted ADR` → `the only open/unratified ADR`. Diff touches only the 5 files carrying those two findings (+22/-20), all banner-flip / wording — no architecture-content drift. The full 12-section reproduction behind 3733 carries forward unchanged. Re-approved on `0d9ef2b`. Clean for Bosun merge. — Surveyor
bosun merged commit d2fbc5f1e3 into v2/next 2026-07-08 01:47:18 +02:00
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