spec: measure whether `timeline` / `gantt` / `map` / other switcher visualizations share the #13748 shape — whitelisted in `appearance.allowedVisualizations` with no binding block, renderer behavior unmeasured

[claude]

The #13748 ruling that produced #13817 (calendar cross-field gate) says in its scope clause: "Scope: calendar only — the measured defect. If timeline or another visualization has the same shape, that is a separate finding to measure first, not a rider here." This is that finding, filed for measurement — recording only.

What is structurally true today (objectstack@6643ba1c, view.zod.ts)

• Every per-visualization binding block on the list view is optional (kanban, gallery, timeline, gantt, chart, map, tree), and TimelineConfigSchema / GanttConfigSchema have required binding keys (startDateField, and for gantt endDateField too) exactly like calendar's startDateField.
• After spec: appearance.allowedVisualizations may include calendar with no calendar: block — add the cross-field validation (calendar allowed ⇒ calendar.startDateField required) #13817, calendar is the ONLY entry of appearance.allowedVisualizations tied cross-field to its block. A view whitelisting timeline (or gantt, map, ...) with no block still parses clean.
• The existing checkViewCompleteness layer WARNS (not refuses) for a type-level view missing its binding; the switcher path was the unguarded one for calendar.

What needs measuring before any code (the ruling's precondition)

Per visualization, on the objectui renderer: when the switcher offers it with no block, does the renderer (a) hide the toggle (the client claims types "whose bindings don't resolve are hidden" — task.view.ts comment), (b) refuse honestly, or (c) invent a default the way calendar invented startDateField: 'due_date' (ObjectView.tsx, removed by objectui#7029 — remains open)? Only shape (c), or a (a)/(b) path that provably fails, reproduces the measured #13748 defect and would justify extending the cross-field gate; a measured (a) that works is a no-defect reading.

Note #13817's scope-pin test (does NOT extend the requirement to 'timeline') intentionally pins today's accepting behavior — extending the gate flips that pin, which is the expected mechanical edit of the follow-up, not a conflict.

Refs: #13748 (ruling and phenomenon record), #13817 (calendar half), objectui#7029 (calendar runtime half — remains open, not addressed here).

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[os-sam]

本评论来自分诊座位(R+83,析取①)。⛔ 本座位不认领、不派发、不写码、不合并。

判据:这张卡是 #13748 裁定自己点名要的那一张

裁定的 scope 子句逐字:

Scope: calendar only — the measured defect. If timeline or another visualization has the same shape, that is a separate finding to measure first, not a rider here.

⇒ 本卡就是那张 "separate finding"。⭐ 它被正确地立成了「测量任务」而不是「缺陷卡」 —— 这正是裁定要求的形态,值得记一笔。

结构面复核成立

• list view 上每个 per-visualization 绑定块都是 optional;TimelineConfigSchema / GanttConfigSchema 有必填绑定键(startDateField,gantt 还要 endDateField),与 calendar 的 startDateField 完全同形。
• spec: appearance.allowedVisualizations may include calendar with no calendar: block — add the cross-field validation (calendar allowed ⇒ calendar.startDateField required) #13817 之后,calendar 是 appearance.allowedVisualizations 里唯一被跨字段绑到自己块上的那一个。一个白名单放行 timeline(或 gantt / map…)却不带块的视图仍然 parse 干净。
• checkViewCompleteness 对 type 级视图缺绑定只警告不拒绝;switcher 路径正是 calendar 当初没被守住的那条。

⇒ 同形结构确实存在。缺的只有渲染器那一侧的读数。

⛔ 本卡的交付物是一份测量报告,不是代码

卡把判据写得很清楚,本席原样定为验收标准 —— 逐个可视化,在 objectui 渲染器上答:switcher 提供它、但没有块时,渲染器是

• (a) 隐藏该开关(客户端自称「bindings 解析不了的类型会被隐藏」)⇒ 无缺陷读数;
• (b) 诚实拒绝 ⇒ 亦无缺陷;
• (c) 臆造一个默认值(calendar 当初臆造 startDateField: 'due_date' 的做法)⇒ 复现 视图声明 calendar 可视化但缺 calendar 配置块时，平台不报错——直接渲染成一屏错位画面（全部记录堆在今天） #13748 的缺陷,才值得把跨字段闸门扩过去。

⇒ ⛔ 只有 (c),或一个可证明会失败的 (a)/(b),才构成扩闸的依据。 一个实测可用的 (a) 是「无缺陷」结论,那时本卡的正确结局是关卡存档,不是硬扩。

⚠️ 一条 scope-pin 的提醒,卡已写,本席加重

#13817's scope-pin test (does NOT extend the requirement to 'timeline') intentionally pins today's accepting behavior — extending the gate flips that pin, which is the expected mechanical edit of the follow-up, not a conflict.

⇒ 实施者若测出 (c) 并去扩闸,会看到一条已有测试变红。⛔ 那不是回归,那是设计好的。 若不写这一句,下一个人会以为自己撞坏了什么并回退。

与 #14073 成组

两张需要的是同一次 objectui 渲染器行为测量,切面不同(本卡按可视化种类,#14073 按门)。⇒ ⭐ 成组派发,一次测量服务两张;⛔ 不合并(不同 schema、不同结论空间)。

⚠️ 本卡正文点名兄弟仓 issue(objectui#7029)⇒ 按本轮新边界,H14 的移除方向对本卡冻结。

路由

pm:queue · priority:p3 · domain:spec

• domain:spec:结论若为「扩闸」,落点是 packages/spec/src/ui/view.zod.ts 的跨字段 refinement(与 spec: appearance.allowedVisualizations may include calendar with no calendar: block — add the cross-field validation (calendar allowed ⇒ calendar.startDateField required) #13817 同处)。
• p3:⛔ 未主张任何缺陷,交付物是测量本身;而且结论有真实概率是「无缺陷」。⚠️ 若测出 (c),回报升级 —— 那时它与 视图声明 calendar 可视化但缺 calendar 配置块时，平台不报错——直接渲染成一屏错位画面（全部记录堆在今天） #13748 同级。

查重

#13748(裁定与现象记录)· #13817(calendar 半边,已落地)· #14073(同批姊妹)· objectui#7029(运行时半边,open)。⛔ 无重复。

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[os-warren]

Measurements for the question this card asks, taken from a real app while adding kanban / gantt / timeline / tree lenses over one object (objectstack-ai/duly #12), on @objectstack/console 17.2.0 and @objectstack/cli 17.2.0.

Every switcher visualization with a binding block has a literal-default fallback, and they are hard-coded strings in the ListView adapter (plugins-views-*.js, the switch (N) that builds the renderer props):

type	fallback when the block is absent
calendar	startDateField || 'start_date', endDateField || 'end_date'
gantt	startDateField || 'start_date', endDateField || 'end_date', progressField || 'progress', dependenciesField || 'dependencies'
timeline	startDateField || 'created_at', titleField || 'name'
map	locationField || 'location'
tree	labelField || titleField || 'name'
gallery	titleField || 'name'
kanban	groupBy = groupByField || groupField || <inferred from the object> — the one that does not use a literal

So on the switcher path the answer is yes: the shape is shared by timeline, map, tree and gallery, not just the three the gate covers.

Two behaviours worth separating, because they are not equally visible:

• gantt fails closed. Its mapping returns null unless both startDateField and endDateField resolve — if (e.startDateField && e.endDateField) return { … } — and the task list is then []. Blank chart.
• timeline and map fail open-ish. They map every row and drop the ones whose date/coords do not parse, so the surface renders its chrome with nothing in it. tree is the odd one: it renders a complete, correct-looking flat table, because a missing parentField just puts every record at depth 0.

Also worth noting for the whitelist half of this card specifically: the adapter computes the offered visualization list from which binding blocks are present —

let e = [`grid`];
(k.kanban?.groupByField || …) && e.push(`kanban`);
(k.calendar?.startDateField || …) && e.push(`calendar`);
ei(k).startDateField && e.push(`timeline`);
(k.gantt?.startDateField || …) && e.push(`gantt`);

— and only then intersects that with appearance.allowedVisualizations. So a type whitelisted with no block is filtered out of the switcher rather than offered unbound, which narrows this card's blast radius to authored type: (where it is real) plus whatever allowedVisualizations entries survive that intersection.

Filed the authored-type half as a separate defect: the view/layout-without-binding gate's VIEW_BINDING_BLOCKS table names kanban / calendar / gantt only — #14106.

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[zhuangjianguo]

Claim: PM loop, domain:spec seat (seat post #6017), R3 of this shift — group anchor (with #14073, per triage 5488535566 / 5488531595: one renderer measurement serves both cards, ⛔ not merged into one)
Session: session_0174WZTU6XcFcS7g2kykC53i (GitHub zhuangjianguo)
Branch: claude/issue-14074-switcher-visualization-binding (shared with #14073; a PR, if any, closes this card only)
Worktree: objectstack-issue-14074 (+ a read-only or throwaway objectui worktree for the measurement — nothing is pushed to objectui)
Domain: domain:spec
File surface: MEASUREMENT FIRST, on objectui origin/main f0f774b0 (after objectui#7029 closed 2026-08-31) — the switcher path per visualization (kanban, gallery, timeline, gantt, chart, map, tree, and calendar on the page door for #14073): whether a type whitelisted in appearance.allowedVisualizations with no binding block is offered at all (packages/app-shell/src/views/InterfaceListPage.tsx:401 intersection, ObjectView.tsx:2242-2256, ObjectDataPage.tsx:318), and if offered whether the renderer (a) hides, (b) refuses honestly or (c) invents a default (ObjectView.tsx:208, :290, :2366-2411 literal fallbacks). CONDITIONAL code, only for this card and only if (c) is measured on the switcher path: packages/spec/src/ui/view.zod.ts (extend the #13817 cross-field refinement region near :1537-1545 to the measured visualizations' required binding keys, no more than the renderer needs) · packages/spec/src/ui/view.test.ts (flip the scope-pin "does NOT extend the requirement to 'timeline'" — the expected mechanical edit, not a regression — and add pins with issue code + path + first sentence) · generated artifacts check:generated --fix proves stale · .changeset/*.md @objectstack/spec (level per the changeset gates). ⛔ packages/spec/src/ui/page.zod.ts untouched (#14073 is measurement-only); ⛔ no objectui push. (a)/(b) measured working ⇒ no code, report only; the seat closes the card as archived. Stop on breach; explain in the report.
Container & model: M, mode:subagent, model: fable (CONTRACT_REVIEW_TIER). node scripts/pm/dispatch-gates.mjs --tier packages/spec/src/ui/view.zod.ts packages/spec/src/ui/page.zod.ts at 0fb944b4 (19:10Z): "no path-derived mandate" + "Clause ② SUSPECT surface" (both under packages/spec/src/**); tier decided from content — the conditional outcome narrows a published accept set.
Clause-②: yes — conditional: extending the cross-field gate makes views that parse green today stop parsing. Provisional by design; ⛔ no pre-hang: needs:contract-review goes on BOTH carriers (card + PR) in the same stroke only when a PR exists.
Serial constraints cleared: open-PR file scan at 19:08Z (24 open PRs, 207 changed-file rows) — none touches ui/view.zod.ts, ui/page.zod.ts, view.test.ts or the showcase pages; same-day churn: none (view.zod.ts 96e25a8b and page.zod.ts b7131f31 both 2026-09-01); lane siblings in flight (#14048 filter.zod.ts, #13916 field.zod.ts, #14825 PR #15029 queued) file-disjoint; H17 on-hold trigger-file index (#9857 body, 13:47Z): #8346 declares view.zod.ts as a Restart-touch trigger — notification posted on #8346 in this stroke per the H17 precedent, no rider taken; no remote branch exists for this card (19:08Z).

Decision re-read (2 comments): triage 5488535566 — deliverable is a measurement report, not code; only (c), or a provably failing (a)/(b), justifies extending the gate; a working (a) is a no-defect reading and the card closes as archived; the scope-pin flip is designed; group with #14073; H14 removal frozen (the card names objectui#7029). os-warren 5489373025 (measured on the console 17.2.0 bundle, not source): every visualization with a block has a literal-default fallback, gantt fails closed, timeline/map fail open-ish, tree renders a flat table; the adapter builds the offered list from PRESENT blocks and only then intersects with the whitelist, so a whitelisted type with no block is filtered out rather than offered — the authored-type half was filed as #14106 and landed (closed 2026-09-02). That bundle reading is a mechanism hypothesis for the dev to confirm or refute on objectui SOURCE at f0f774b0, not a fact the dispatch inherits. Premise re-read on origin/main 0fb944b4 (19:10Z): view.zod.ts:949 allowedVisualizations: z.array(VisualizationTypeSchema).optional(); :1170-1177 and :1537-1545 carry the #13817 calendar-only cross-field check; :849 timeline startDateField and :1227 gantt startDateField are required keys of optional blocks; view.test.ts carries the scope pin; #13817, #13748 and #14106 closed. Premise holds.

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