spec(stack): defineStack's hydrated inline-column check (collectHydratedInlineColumnErrors) does not walk record:line_items, so once its columns hydrate, a currency column with scale publishes there and is refused on the master-detail carriers #24190

Blocked-by: objectstack-ai/objectui#12854 (the renderer half; release also needs .objectui-sha to carry its merge — recorded by the triage seat)

Filing gate ①, class (b): a declared contract one carrier does not get. reach: the public door defineStack / os validate. On origin/main cb8756b00, build() accepts a record:line_items column { name: 'amount', scale: 2 } over a currency child field, and it refuses the same column under object-master-detail-form. packages/spec/src/inline-grid-column-carriers.test.ts pins both answers; its test "CONTROL — defineStack does not judge an identity-only line-items column" pins the line-items one.

Seam: spec:collectHydratedInlineColumnErrors → renderer:objectui LineItemsPanel (objectstack-ai/objectui#12854)

Filed by the domain:spec seat 1 (#6017) · os-project-manager · session session_01TyRhWbVbbQpQJTDbW8VahJ, from the #24140 dev's out_of_scope_findings[0] (PR #24188). ⛔ Not a claim. Self-labelled domain:spec under the filer exception (packages/spec/src/stack.zod.ts). Grade and state are triage's.

Reader who acts: the domain:spec seat. The fix lands in packages/spec/src/stack.zod.ts, with the pin in inline-grid-column-carriers.test.ts.

Why this becomes a contract gap

• collectHydratedInlineColumnErrors (packages/spec/src/stack.zod.ts, about :3576) says it judges "inline grid columns whose TYPE comes from the child field". It walks three carriers, read on origin/main cb8756b00:
  • a field's inlineColumns (about :3613);
  • a form view's subforms[].columns (about :3629);
  • an object-master-detail-form page block's details[].columns (about :3640).
• record:line_items is not among them. Today that is consistent: RecordLineItemsProps.columns says the block does NOT hydrate, so a line-items column has no child-derived type to judge.
• PR docs(spec): record:line_items columns hydrate from the child field, like the master-detail carriers #24188 (record:line_items column headings cannot be translated: a column label is a plain string, the block does not hydrate from the child field, and no bundle key reaches properties.columns #24140, route B from triage's grade 6229394877) changes that describe. A line-items identity-only column now hydrates label / type / options from the child field, as on the carriers. plugin-form: record:line_items hydrates an identity-only column from the child field (label, type, options) as the master-detail carriers do, so printed line-item headings translate (the objectui half of objectstack-ai/objectstack#24140) objectui#12854 is the renderer half.
• Once both land, { name: 'amount', scale: 2 } over a currency child renders as a currency cell, and scale is unread. os validate stays green on this block. Only objectui's render-time console.warn reports it. The same column is refused at publish on the other three carriers.

What done looks like

• collectHydratedInlineColumnErrors judges record:line_items columns against the child field's type, by the same column-contract rules it applies to the carriers.
• The CONTROL test flips: line-items and object-master-detail-form give the same answer for the same column.
• This narrows what publishes. Declare it as Clause-②: no (narrowing) (or yes, which is never wrong for a narrowing), and run one contract-tier review before the queue.

Order

Depends on #24140 (PR #24188), whose describe makes the column's type child-derived on this block. Whether it also waits on objectstack-ai/objectui#12854 and the console pin is triage's call.

Dedupe

MCP search_issues on objectstack-ai/objectstack, open and closed:

• collectHydratedInlineColumnErrors record:line_items identity-only column type-conditional rule currency scale defineStack → 0 hits.
• line items hydrated inline column check publish resolved type line_items columns → 2 hits: record:line_items column headings cannot be translated: a column label is a plain string, the block does not hydrate from the child field, and no bundle key reaches properties.columns #24140 (the parent, the positive control) and finding(showcase): project-detail's record:line_items block keys its five columns as field, while the line-items grid binds name — the Tasks grid renders empty cells #21142 (closed: showcase line-items columns keyed field). Neither is this gap.

Dedupe words: collectHydratedInlineColumnErrors record:line_items; line items identity-only column scale currency defineStack; hydrated inline column check line_items.

Generated by Claude Code