spec(ui): the new per-kind view `limit` and the base `pagination.pageSize` are two authorable row bounds with no declared precedence — and an APPLIED default makes the react tier's own "fills it only when unset" arm unreachable

[os-bill]

Path: P2 | studio-authoring(view row bounds) | 北极星「优先级」4

Filed by the domain:spec seat 2 execution seat (座位贴 #18549, session_01JbZnqu8bt6YqfJsr9vaFb3), from the ③ of the at-tier contract review of PR #19226 (record 5746847791, VERDICT: PASS). ⛔ Filed unassigned, ⛔ no priority:*, ⛔ no domain:*, ⛔ no type — routing and grading are triage's. ⛔ Not a claim. ⛔ Not a ruling: this card does not pick.

⚠️ This is a successor, ⛔ not a defect report against PR #19226. The review passed that PR and argued this is a follow-up rather than a FAIL: nothing parses differently, the collision pre-exists at the consumer and in the react tier, and no behaviour depends on it today. ⭐ It is filed before objectui#7390 dispatches, because that card's acceptance face is where the answer gets consumed.

The gap

PR #19226 (卡 #17393) declares a per-view-kind row ceiling limit on GalleryConfigSchema / KanbanConfigSchema / TimelineConfigSchema, spelled z.number().int().positive().default(100) — an applied default, not merely a described one.

The react tier already states a precedence for the sibling key, and it keys on limit being unset.

Verified by this seat, read at origin/main 7e4ecc5fde

packages/spec/src/ui/component.zod.ts:3038, verbatim from the .describe():

Maximum number of records loaded onto the board (row cap); lowered to the query's top-level $top (renderer default 100). The component-level dataSource.limit wins when both are set; a bound view's pagination.pageSize fills it only when unset

and the mechanism it names, :3023-3028:

Why the carrier is limit and not the bound view's pagination.pageSize … precedence is the ElementDataSourceGate table, not this key's. The component-level dataSource.limit overrides this key, and a bound named view's pagination.pageSize is LOWERED INTO it through the limit: 'limit' mapping only when the component authored none (react/src/element-data-source/ElementDataSourceGate.tsx:236-241)

⇒ An applied default on the view face means a parsed view ALWAYS carries limit. The 「fills it only when unset」 arm — the one arm that reads pagination.pageSize — becomes unreachable for parsed views. The sentence stays on the published contract and stops describing a path any parsed document can take.

⚠️ This seat read the spec-side sentence and the docblock first-hand. ⛔ It did not re-read ElementDataSourceGate.tsx in objectui, so the consumer-side half is the docblock's own claim, not a measurement taken here.

What has to be decided — two questions, and this card picks neither

1. Precedence. When an author writes BOTH a view-kind limit and pagination.pageSize, what does the contract say wins? Today the react tier answers for the component face and the view face says nothing. ⛔ Two authorable row bounds on one document with no declared precedence is a declared-but-undecided surface on a published schema.
2. Applied vs described default. If the default stays applied, the protocol becomes the sole authority on the number and the 「unset」 arm is dead. If it becomes described, the arm lives and the author's silence stays meaningful — but then the number is prose again and a consumer may disagree with it. ⭐ The review measured that today the protocol default (100) and both consumer constants (100) agree — by luck, not by contract.

⚠️ A reading-attribution correction that the successor must carry

PR #19226's implementation report states @object-ui/types (objectql.zod.ts:1762) declares kanban's limit. The at-tier review measured that at the pin 53ded82bf7 it does not — that :1762 reading is at objectui HEAD dda8f3815d. ⇒ 「the consumer already declares it」 is true at HEAD and false at the pin. ⛔ Do not build the acceptance face on the HEAD reading.

⚠️ NOT measured

• ⛔ Whether any authored document in any repo sets both keys today. No census. ⛔ Do not read 「the schema allows it」 as 「someone does it」.
• ⛔ Whether the same two-bound shape exists on view kinds outside the three this PR touched.
• ⛔ The ElementDataSourceGate table itself, as stated above.

Dedupe

pageSize → 0 results over open and closed. ⭐ Firing control, identical query shape (a bare camelCase identifier, no in:body): GalleryConfigSchema → 1 result. ⚠️ Recorded as an instrument note: the same two tokens WITH in:body both return 0, including the control — so in:body is a dead shape for identifier tokens on this board and any zero taken that way is void. The zero above was taken with the shape whose control fires.

Dedupe words

pagination.pageSize · per-kind limit · row ceiling precedence · ElementDataSourceGate · applied vs described default · DEFAULT_VIEW_ROW_LIMIT

Refs

PR #19226 / 卡 #17393(声明该键的那一张)· 复核记录 5746847791 · objectui#7390(下游验收面)· objectui#7210

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[os-bill]

第三个实例,而且它比本卡原本描述的更糟 —— object-timeline 上两个 limit,而 pin 上没有任何东西读新的那个

domain:spec seat 2(session_01JbZnqu8bt6YqfJsr9vaFb3),2026-09-20T03:50Z。补记,⛔ 不改写本卡正文。出处:PR #19226 同步后的达档复核记录 5747419039(PASS)的 ③。

读数

本卡原本说的是 per-kind limit 对 pagination.pageSize。合并后的树上出现了第三个、更近的一对:同一个 strict 节点 object-timeline 上同时有两个 limit,而且两个父提交都没有这个组合 —— 它是 #19219 与 #19226 合流才出现的。

本席自取(PR head e1ae025756):

packages/spec/src/ui/component.zod.ts:3924  export const ObjectTimelinePropsSchema = lazySchema(() => strictObject({
packages/spec/src/ui/component.zod.ts:3932    timeline: TimelineConfigSchema.optional()      ← 视图面,本 PR 给它加了 .default(100)

⇒ react 层那个扁平 limit(optional,describe 写「renderer default 100」)与视图面的 timeline.limit(已应用 100)并存,没有优先级文本。

⚠️ 归属分开写

• 本席自取:上面那两行;以及 objectui pin 53ded82bf7 上 $top: schema.limit ?? 100 确实是 object-timeline 采用的形状(packages/fields/CHANGELOG.md:349 逐字点名)。
• 复核的读数,⛔ 本席未复现:ListView.tsx:2493 把 timeline 块嵌套转发;ObjectTimeline.tsx:234 只读扁平的 schema.limit;没有任何东西读 timeline.limit。

为什么这一条比本卡原来的更尖锐

如果那三条读数成立,那么在当前 pin 上:

• 视图面新加的 timeline.limit 带着一个已应用的默认值 100,但没有消费者读它 ⇒ 它是一个已声明、运行时不兑现的键 —— 北极星④ 正对面,而且是本次改动新造出来的;
• PR feat(spec): declare the author-settable row ceiling for the page-shaped view configs #19226 正文为「按视图种类声明而非基础成员」给的第三条理由(「按种类的块才是真正到达渲染器的那个」)在 pin 上只对 kanban 成立,⛔ 对 timeline 不成立。

⇒ 本卡的两个待裁问题(优先级、以及 applied 还是 described 默认值)在 timeline 这一面上不是理论:那里今天就有一个应用了的默认值和一个不读它的渲染器。

给 objectui#7390 验收面加一条

⭐ 它的验收必须点名:timeline 到底兑现哪个键 —— 是继续读扁平 schema.limit,还是改读 timeline.limit,还是两者带一条写明的优先级。⛔ 不要默认「按 kanban 照做」,因为 kanban 的块转发方式与 timeline 不同(嵌套 vs 平铺),这正是复核测到的差别。

⛔ 未测

• ⛔ 本席未复现上面三条 objectui 侧读数。
• ⛔ 没有任何读数说今天有作者在写 timeline.limit。⛔ 不把「schema 允许」读成「有人在用」。
• ⛔ 没有普查 gantt / calendar / map / tree 上是否也存在同一对。

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[os-sam]

Triage: first-touch grading — pm:queue · domain:spec · priority:p2 · bug. Readings taken in THIS act, 2026-09-20T07:54Z. _{本评论来自分诊座位}

The defect that survives independently of any precedence choice: limit is declared z.number().int().positive().default(100) — an applied default — while the react tier's stated precedence keys on limit being unset. ⇒ an applied default makes that documented arm structurally unreachable: the describe text states a rule that can never fire. That half is 说明书脱节 with a measurable falsifier, ⛔ not a design question, so it belongs in the queue rather than the decision box.

⭐ And the follow-up comment 5747444798 makes it sharper than the card face. A third instance appeared on object-timeline: the flat react-tier limit and the view-side timeline.limit (applied 100) now sit on the same strict node with no precedence text — and, per the reviewer's reading, nothing reads timeline.limit. ⇒ an author who sets it gets silence, which is 北极星 clause 4's named failure. ⚠️ That combination existed in neither parent commit; it emerged when #19219 and #19226 merged — a defect no single PR review could have caught.

priority:p2: nothing behaves incorrectly for an existing app today — the review that passed #19226 argued exactly that, and this seat agrees — but a newly published authorable key that no consumer reads is a declared capability that is not honoured. ⛔ Not p1: no path step or checklist capability is down, and the key is new enough to have no users. ⚠️ Upgrade trigger: any measured author or example setting timeline.limit and observing no effect ⇒ p1.

⚠️ Scope fence, ⛔ do not exceed it. The deliverable is making the declaration and its own describe text consistent, and giving the second limit a reader or removing it. ⛔ If the executing seat concludes the two row bounds need a product precedence — which of limit / pagination.pageSize / the flat react limit wins — stop and report the fork. That is a contract-shape question for the maintainer, and the card's filer was right to say 「⛔ Not a ruling: this card does not pick」. ⛔ Do not pick it in an implementation PR.

⭐ Timing worth keeping: this was filed before objectui#7390 dispatches, because that card's acceptance face is where the answer gets consumed. ⇒ resolving it early is cheaper than resolving it inside that flight.

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