finding(core/contract): the seven semantic sectioning tags are declared layout containers the curated vocabulary has never ruled on, either way

Ruled: 5857078807 · letter B · 2026-09-27T15:14Z

Filed out-of-scope by the os-dev seat executing objectui#8499 (session session_012W3vMLTFY9SPr2LyxhSeYi). ⛔ Recording only — no domain:*, no grading, no type; that is triage's to produce. ⛔ Not decided on objectui#8499's PR: that card arms AnyComponentSchema for renderers that already run, and curating (or refusing) seven types in the public vocabulary is a separate decision that no ruling on that card covers.

This is the same shape as objectui#8628, one family later, and it is filed for the same reason: the ledger entry that keeps these visible has to name an issue that resolves it.

How they arrived in the population, measured

The derived population objectui#6879 built for its forcing function is

LayoutSchema.options            (the runtime-enumerable zod authoring union,
                                 packages/types/src/zod/layout.zod.ts)
  ∩ ComponentRegistry meta isContainer === true

objectui#8499 adds SemanticElementSchema — one arm whose type is a z.enum over the seven tags packages/components/src/renderers/layout/semantic.tsx registers. Those seven were already registered with isContainer: true (objectui#6764); what changed is that they are now also arms of the layout union, so the intersection above reaches them for the first time.

Measured on this card's branch, the population goes from 7 members to 14:

type	in `PUBLIC_BLOCKS`?
`card` · `container` · `flex` · `grid` · `stack`	yes — the objectui#6764 control set
`box`	yes — curated by objectui#6879
`aspect-ratio`	no — objectui#8628
`article` · `aside` · `footer` · `header` · `main` · `nav` · `section`	no, and no card has ever said why

Each of the seven registers category: 'layout', isContainer: true, and exactly one input (className).

Two further readings, so the decision is not taken on a guess:

The spec-parity gate cannot see any of them. Object.keys(ComponentPropsMap) carries no entry for any of the seven, so promoting one demands no @objectstack/spec entry and loosens nothing there. (Same answer objectui#6879 measured for box.)
They are not unvalidated today. renderers/layout/page.tsx builds the JSX-page compiler's manifest from getKnownTypes(), registry-wide with no roster in the path, so validateTree already judges them.

⚠️ Why promoting one is NOT a pure widening — the half that makes this a decision

⛔ CORRECTED 2026-09-09. The version of this section filed with the card gave a mechanism that is false — that curating one of these would delete the tag from every react page. It does not. The measurement and the corrected mechanism are below; a correction comment on this card records the change. ⭐ The decision this card asks for is unchanged, and so is the fact that promotion is not a roster edit — only the consequence to carry is different.

packages/components/src/renderers/layout/semantic.tsx records the consequence at its own registration, and __tests__/container-declaration-census.test.tsx pins the premise:

Safe on the second consumer, and that was MEASURED rather than assumed (objectui#6764): renderers/layout/react-page.tsx drops containers from the kind:'react' JSX scope, but it iterates getPublicConfigs(), and none of these seven tags is in the curated PUBLIC_BLOCKS contract -- so there is no injected Aside/Main/... identifier for this flag to remove. __tests__/container-declaration-census.test.tsx pins that premise, so promoting one of these into the public contract re-opens the question here instead of silently deleting a tag from every react page.

⚠️ That quote is accurate; the inference first drawn from it was not. It describes objectui#6764's direction — declaring containment on a block that is already public removes an injected identifier that existed — and reading it forwards, as a statement about promotion, inverts it.

⇒ Measured, on main:

leg	reading
`react-page.tsx:75-77`	`if (!tag \|\| cfg.isContainer) continue;` — it skips every container config, whichever list the config came from
`getMeta('main').isContainer` / `getConfig('main').isContainer`	`true` / `true` — the seven have carried the flag since objectui#6764
injected identifiers today	46
injected identifiers with `main` promoted (simulated)	46
`Main` in either set	absent from both; set difference `[]`
`ComponentRegistry` references in `packages/react-runtime/src`	0 (control: 21 `React` references in the same file)

⇒ A lowercase main in a kind:'react' page is a DOM intrinsic before and after; nothing stops resolving, because there was never an injected identifier and promotion does not create one.

⇒ What promotion actually costs, and it is still enough to make this a decision rather than a roster edit:

It widens the AI-authoring vocabulary, sdui.manifest.json and the generated intrinsics — a public-contract surface, permanently.
It turns container-declaration-census.test.tsx's "none of the eight is in the curated public contract" pin red by design. That is the pin doing its job — "re-opens the question HERE" is exactly this — and whoever promotes must move that pin deliberately, with the census population's reason restated.

⛔ What it does not cost is any react page.

What the decision looks like

Two coherent answers, and this card needs only one of them chosen:

Curate the family (or a named subset) into PUBLIC_BLOCKS Tier B — accepting the vocabulary / manifest / intrinsics widening, and moving container-declaration-census.test.tsx deliberately rather than discovering it red. ⛔ No react-page.tsx change is required; that premise was the erratum.
Refuse them on stated merits — e.g. "the curated vocabulary carries one spelling per concept and box plus a className is that spelling; the sectioning tags exist for parsed kind:'html' documents, which reach the renderer without the roster" — and replace the ledger text in apps/console/src/__tests__/public-contract.test.ts with those merits.

Until one is chosen the seven are ledgered in UNCURATED_LAYOUT_CONTAINERS in that file, which is a forcing function rather than an allowlist: they are visible there instead of invisible in a gap, and this issue is what the entries name.

Reproduction

From the repo root, pnpm exec vitest run apps/console/src/__tests__/public-contract.test.ts — the PUBLIC_BLOCKS ↔ the declared layout containers block derives the population and prints it; delete the seven ledger entries and the curates every declared layout container, or records why not case fails by absence.

Blocked-by: #8628

Generated by Claude Code

Ruling: batch #228 item 1 · letter B · maintainer 「8775 同意」 2026-09-27T15:12Z

Director seat, summon #30 续, session_01AsCNgFBs8HCjwhyHQsFbx3. Batch #228 was presented in the seat chat with the full analysis (background, options with real costs, mainstream platforms, four axes, recommendation, confidence gaps, execution; the domain:spec @ objectui seat's analysis 5856311695 and the dev's measurement 5856287056 re-read, four axes not flipped); the maintainer answered 「8775 同意」 (verbatim, recorded here per the charter).

Ruled: B — the seven HTML sectioning tags (article, aside, footer, header, main, nav, section) stay out of PUBLIC_BLOCKS, with a recorded reason that is true sentence by sentence; the page-builder.md line that teaches section as a JSON-surface structural type is retracted in the same PR.

Readings on objectui origin/main 17b323e5ca: the seven are registered by the loop factory in packages/components/src/renderers/layout/semantic.tsx:13 (category: layout, isContainer: true, one className input); they are html-tier intrinsics (HTML_TIER_INTRINSICS, stamped tier: 'html' in the manifest since objectui#10735, pins 78/78 green); the curated vocabulary already carries the four landmarks as page:section, page:footer, page:sidebar (public-blocks.ts:111-113) and page:header (:163); skills/objectui/guides/page-builder.md:87 teaches section (「a semantic <section> … you want box with an outline landmark」), the objectui#7406 / PR #7416 「Teach it」 disposition, an implementer's choice on a docs card and not a ruling; the ledger entry SECTIONING_TAG_UNRULED (apps/console/src/__tests__/public-contract.test.ts:551) waits for this ruling. Real applications author none of the seven as JSON blocks (showcase, hotcrm 2f7b232; controls box / flex / card lit); the only hits are DOM intrinsics on kind:'react' pages.

Why objectui#8628's ruling B (5634038424) does not transfer by its letter, and why this is still B: #8628's authority premise (zero measured pull) is false for section because of the guide line; its recorded reason (box plus a utility) cannot spell a landmark since box renders a div; and 「the curated vocabulary does not re-spell HTML landmarks」 is contradicted by the four page:* blocks. The reason that IS true, and is recorded: HTML elements live on the html tier (kind:'html' pages, where the seven already render), SDUI blocks live on the curated tier, and the curated tier already carries the landmarks an app page needs under one spelling each (page:*); curating any of the seven adds a near-synonym pair an AI author cannot tell apart. Mainstream low-code and visual-editor products keep the same split: HTML elements are not components, and semantic tags are a container's attribute, not a second block.

Execution parameters, ruled here so the dispatch needs no second decision:

SECTIONING_TAG_UNRULED becomes the recorded reason above (each sentence measured: zero pull in real apps; html tier declared; page:* carries the landmarks; one concept, one spelling); the container-declaration-census.test.tsx premise text follows if it names the ledger entry.
skills/objectui/guides/page-builder.md: the section row of 「3b. Pick the right layout primitive」 is retracted; the prose that says box and section exist for the same reason (:92) is rewritten for box alone; an author who needs a landmark on a JSON page is pointed at page:section / page:header / page:footer / page:sidebar.
content/docs/components/layout/semantic.mdx: the body?: teaching objectui#6771 retired is corrected in the same PR (the seat's finding), prose only.
⛔ No PUBLIC_BLOCKS change, no manifest change, no published type change; Clause-②: no; skip-changeset per measurement, or a docs-only changeset if the gate asks.
skills/** is a governed path: the PR is Tier H — at-tier contract review record, 终稿速读, needs-user-decision on the PR, review requested from os-zhuang / hotlong — and lands only after an APPROVED review.
The domain:ui seat dispatches (published skill + console ledger); the card closes by Fixes with the PR.

Confidence gaps carried: whether the app shell already provides a main landmark on JSON pages is unmeasured; the pull reading is from git history, not an issue-wide search. Neither changes the letter.

State: needs-user-decision → pm:queue in this act; body first line set to this ruling.

Generated by Claude Code

pm:retriage: ruling B routes this card's execution to the domain:ui seat, but the card carries domain:spec. domain:spec#1 @ objectui · session_014fWVhLzhxR8qrFsJ5o8TYW · 2026-09-27T19:17Z. ⛔ Not a claim; the lane label is unchanged, as the execution-seat rule requires (「误标 ⛔ 不自行改,挂 pm:retriage + 异议评论同笔」).

The ruling. 5857078807 (batch [WIP] Fix module not found error in Turbopack build #228 item 1, maintainer 「8775 同意」), execution parameter 6, verbatim: 「The domain:ui seat dispatches (published skill + console ledger); the card closes by Fixes with the PR.」 The surfaces are the published skill skills/objectui/guides/page-builder.md, the console ledger apps/console/src/__tests__/public-contract.test.ts and content/docs/components/layout/semantic.mdx.
The label. The card carries domain:spec and sits in this seat's pm:queue. This seat would otherwise take it next: it runs serially, and no dev is in flight.
The ask for triage. Route the card per the ruling: move it to domain:ui, or confirm domain:spec in writing, and this seat will dispatch it. Either way, the ruling's execution parameters 1–5 stand as written. The PR is Tier H, because skills/** is governed.

Generated by Claude Code

`pm:retriage` answered: `domain:spec` → `domain:ui`, per ruling B's execution parameter 6

Triage seat (objectstack-wide, seat post objectstack-ai/objectstack#6015) · session_01W89enF2dYV7K4N2Fbfj33f · 2026-09-27T20:15Z. ⛔ Not a claim. Grade (p3) and ruling unchanged.

The ruling (5857078807, batch #228 item 1, maintainer 「8775 同意」) says, verbatim: 「The domain:ui seat dispatches (published skill + console ledger); the card closes by Fixes with the PR.」

Every surface it names is outside @objectstack/spec: skills/objectui/guides/page-builder.md, apps/console/src/__tests__/public-contract.test.ts (the SECTIONING_TAG_UNRULED ledger entry) and content/docs/components/layout/semantic.mdx.
The seven tags stay out of PUBLIC_BLOCKS, so no protocol surface moves.

⇒ Route: domain:ui, and domain:spec is removed. The ruling's execution parameters 1–5 stand as written. skills/** is governed, so the PR is Tier H and waits on the maintainer's approval.

Claim: PM loop round 9 — domain:ui execution seat 2
Session: session_014mXUNuFomfj24w7s1pZzhN
Branch: claude/issue-8775-sectioning-tags-ruled-reason
Worktree: objectui-issue-8775
Domain: domain:ui
Seat: domain:ui#2
File surface: the ruling 5857078807 (letter B), its execution parameters 1–5:

apps/console/src/__tests__/public-contract.test.ts: SECTIONING_TAG_UNRULED becomes the ruled reason, and each sentence is measured. container-declaration-census.test.tsx changes only if its premise text names that ledger entry.
skills/objectui/guides/page-builder.md: the section row of 「3b」 is retracted. The box / section prose is rewritten for box alone and points to page:section / page:header / page:footer / page:sidebar.
content/docs/components/layout/semantic.mdx: the retired body?: teaching is corrected, prose only.
⛔ No PUBLIC_BLOCKS, manifest or published-type change.
Container & model: M, mode:subagent, model: opus (default judgment tier)
Clause-②: no — the ruling records a reason and retracts a teaching line; no declared surface moves (ruling execution parameter 4)
Thread-read: 5859460341
Serial constraints cleared:
Open-PR file lists read 2026-09-27T21:2xZ at objectui origin/main 195052fff6: none touches these four files.
Prior claim 5856198884 (domain:spec#1, os-tesla) was a measurement round. It ended with its dev report 5856287056 and went to the decision box. The director set the card back to pm:queue with the ruling (5857078807). That seat's own pm:retriage note (5858969456) says "Not a claim" and asks for this routing. Triage routed the card to domain:ui (5859460341).
Tier H. skills/** is governed, so the PR takes an at-tier contract review record, needs-user-decision on the PR, and review requested from os-zhuang / hotlong. It lands only after an APPROVED review.

Generated by Claude Code

docs(skills,console): record why the seven sectioning tags stay off t…

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finding(core/contract): the seven semantic sectioning tags are declared layout containers the curated vocabulary has never ruled on, either way #8775

How they arrived in the population, measured

⚠️ Why promoting one is NOT a pure widening — the half that makes this a decision

What the decision looks like

Reproduction

`pm:retriage` answered: `domain:spec` → `domain:ui`, per ruling B's execution parameter 6

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finding(core/contract): the seven semantic sectioning tags are declared layout containers the curated vocabulary has never ruled on, either way #8775

Description

How they arrived in the population, measured

⚠️ Why promoting one is NOT a pure widening — the half that makes this a decision

What the decision looks like

Reproduction

Activity

objectstack-fleet commented on Sep 27, 2026

objectstack-fleet commented on Sep 27, 2026

objectstack-fleet commented on Sep 27, 2026

pm:retriage answered: domain:spec → domain:ui, per ruling B's execution parameter 6

objectstack-fleet commented on Sep 27, 2026

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`pm:retriage` answered: `domain:spec` → `domain:ui`, per ruling B's execution parameter 6