feat(spec): a repeater's property-panel table has column names, and an untitled item schema is now loud (#17500)

* test(spec): pin every repeater row property to carry a JSON Schema title

Studio renders a `type: 'repeater'` form field as a table whose column
headers read `items.properties[k].title ?? k` off the JSON Schema served
by `GET /meta/types`. An item schema with no `.meta({ title })` falls
through to the raw machine key in every locale, English included.

The class was silent: one repeater was titled and the next one to land
would reproduce the defect with every gate green. This pin enumerates
every repeater declared across every `*.form.ts` in the package, derives
each row schema through the platform's own `z.toJSONSchema` predicate,
and requires a title on every authorable row property — with an exact,
shrink-only ledger for the carriers still owed one.

Claude-Session: https://claude.ai/code/session_01MkQhmuuJAVDjmeWNixwDDH
Co-authored-by: Claude <noreply@anthropic.com>

* feat(spec): author English titles on thirteen repeater item schemas

Every row property of `action.params`, `app.areas`, `dataset.dimensions`,
`dataset.measures`, `flow.nodes`, `flow.edges`, `flow.variables`,
`page.variables`, `page.regions`, `page.interfaceConfig.sort`,
`report.order`, `report.blocks` and `skill.triggerConditions` now carries
a `.meta({ title })`, so Studio's property-panel table shows an authoring
name instead of the raw machine key.

`page.interfaceConfig.sort` is titled through the shared `SortItemSchema`
in `shared/enums.zod.ts`, which is the item schema it composes.

The pin's title read is corrected in the same commit: a `.meta({ title })`
on a schema zod hoists into `$defs` is emitted as a SIBLING of the `$ref`
(`{ title, $ref }`), which is where the console reads it from — following
the ref first reported a titled property as untitled.

Claude-Session: https://claude.ai/code/session_01MkQhmuuJAVDjmeWNixwDDH
Co-authored-by: Claude <noreply@anthropic.com>

* chore(spec): changeset for the repeater item-title class guard

Also drops an unused `depth` parameter from the pin's `deref` helper,
which `check:test-typecheck` reads as TS6133 inside its checked zone.

Claude-Session: https://claude.ai/code/session_01MkQhmuuJAVDjmeWNixwDDH
Co-authored-by: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: os-bill

.changeset/repeater-item-schema-titles-class-guard.md

@@ -0,0 +1,76 @@
+---
+"@objectstack/spec": minor
+---
+
+feat(spec): a repeater's property-panel table has column NAMES, and an untitled item schema is now loud (#17232)
+
+## What was wrong
+
+Studio renders a `type: 'repeater'` form field as a table whose column headers
+read `items.properties[k].title ?? k` off the JSON Schema served by
+`GET /meta/types` — derived by `packages/metadata-protocol`'s `toJsonSchemaSafe`,
+i.e. `z.toJSONSchema(getMetadataTypeSchema(type), { unrepresentable: 'any' })`.
+The bundle overlay `resolveMetadataFormSchemaTitles` (#16458 / PR #17227) only
+replaces a title that is already there, so an item schema carrying no
+`.meta({ title })` falls through to the raw machine key — in **every** locale,
+English included. The maker read `actionUrl`, `defaultCollapsed`, `dateGranularity`
+inside an otherwise fully translated panel. This is a missing authoring label in
+the contract, not a translation gap.
+
+PR #17227 titled exactly one repeater, `dashboard.header.actions`, and was scoped
+by dispatch to that one. **The class stayed silent**: the next repeater to land
+would reproduce the defect with every gate green.
+
+## Measured on `origin/main` at `e758131b39`
+
+22 repeater fields are declared across 11 `*.form.ts` files. Derived through the
+platform's own predicate rather than a source regex:
+
+- **1** was fully titled — `dashboard.header.actions`, PR #17227's instance.
+- **1** has no object row shape at all — `action.locations` is an array of enum
+  STRINGS, so it renders no column headers and leaks no key. It is **not** a
+  carrier, which is why the class is **20** untitled tables today and not the 21
+  the card premised.
+- **20** were untitled.
+
+## What changed
+
+**Thirteen carriers are now titled** — every row property of `action.params`,
+`app.areas`, `dataset.dimensions`, `dataset.measures`, `flow.nodes`,
+`flow.edges`, `flow.variables`, `page.variables`, `page.regions`,
+`page.interfaceConfig.sort`, `report.order`, `report.blocks` and
+`skill.triggerConditions` carries a `.meta({ title })`. `page.interfaceConfig.sort`
+is titled through the shared `SortItemSchema` it composes.
+
+**The silence is closed.** `packages/spec/src/kernel/repeater-item-titles.test.ts`
+enumerates every repeater declared across every `*.form.ts` in the package,
+derives each row schema through `z.toJSONSchema`, and requires a title on every
+authorable row property. Carriers still owed one sit in an EXACT, shrink-only
+ledger: a repeater absent from the ledger must be fully titled, and a ledger
+entry whose debt has been paid must be deleted. A new repeater is therefore red
+on the day it lands, and the ledger can only shrink.
+
+Two exclusions the pin makes deliberately, each with its own control:
+
+- a `retiredKey()` tombstone is a parse-time refusal, not an authorable column
+  (`flow.nodes[].outputSchema`);
+- a scalar-item repeater has no row properties to name (`action.locations`),
+  and is pinned by name so an object-shaped one cannot land there silently.
+
+## What is still owed, and why
+
+Seven carriers remain on the ledger because their item schemas live in files held
+by other in-flight PRs at the time of writing — `dashboard.widgets` and
+`dashboard.globalFilters` (`ui/dashboard.zod.ts`), `view.columns` / `view.sort` /
+`view.tabs` (`ui/view.zod.ts`), and `field.options` + `object.fields.options`
+(the one `SelectOptionSchema` in `data/field.zod.ts`). The pin OBSERVES them
+without editing them, so the ledger states the whole class rather than the slice
+one PR could reach.
+
+Localisation is additive and unchanged by this round. `.meta({ title })` is the
+English authoring layer by contract — `translation.zod.ts` states it in those
+words — and a bundle's `metadataForms.<type>.fields.<repeater>.<property>.label`
+overlays it per locale. No form file here enumerates repeater children, so
+`os i18n extract` emits no new catalog keys and no catalog moves. Until those
+leaves are authored, a non-English panel shows the English title rather than the
+machine key — strictly better than today, and the localisation layer is still owed.

packages/spec/src/ai/skill.zod.ts

@@ -192,13 +192,13 @@ function checkSkillTriggerConditionValueShape(
  */
 export const SkillTriggerConditionSchema = lazySchema(() => z.object({
   /** Condition field (e.g. 'objectName', 'userRole', 'channel') */
-  field: z.string().describe('Context field to evaluate'),
+  field: z.string().describe('Context field to evaluate').meta({ title: 'Context Field' }),
 
   /** Comparison operator */
-  operator: z.enum(['eq', 'neq', 'in', 'not_in', 'contains']).describe('Comparison operator'),
+  operator: z.enum(['eq', 'neq', 'in', 'not_in', 'contains']).describe('Comparison operator').meta({ title: 'Operator' }),
 
   /** Expected value(s) — an array for `in`/`not_in`, a string for `eq`/`neq` */
-  value: z.union([z.string(), z.array(z.string())]).describe('Expected value or values'),
+  value: z.union([z.string(), z.array(z.string())]).describe('Expected value or values').meta({ title: 'Value' }),
 }).superRefine(checkSkillTriggerConditionValueShape));
 
 export type SkillTriggerCondition = z.input<typeof SkillTriggerConditionSchema>;

packages/spec/src/automation/flow.zod.ts

@@ -158,16 +158,17 @@ export const FlowVariableSchema = lazySchema(() => strictObject(
       'mis-declared input/output contract shipped without a diagnostic.',
   },
   {
-  name: z.string().describe('Variable name'),
-  type: z.string().describe('Data type (text, number, boolean, object, list)'),
-  isInput: z.boolean().default(false).describe('Is input parameter'),
-  isOutput: z.boolean().default(false).describe('Is output parameter'),
+  name: z.string().describe('Variable name').meta({ title: 'Name' }),
+  type: z.string().describe('Data type (text, number, boolean, object, list)').meta({ title: 'Type' }),
+  isInput: z.boolean().default(false).describe('Is input parameter').meta({ title: 'Input' }),
+  isOutput: z.boolean().default(false).describe('Is output parameter').meta({ title: 'Output' }),
   defaultValue: z.unknown().optional()
     .describe(
       'Value bound at run start when no parameter supplies one — this is what makes a ' +
       'declared variable always bound. An explicitly supplied param wins, including ' +
       '`false` and `null`; the boundary is `params[name] !== undefined`.',
-    ),
+    )
+    .meta({ title: 'Default Value' }),
 }));
 
 /**
@@ -301,15 +302,15 @@ function flowNodeObject() { return strictObject(
       'config shipped as a step that quietly ignored it.',
   },
   {
-  id: z.string().describe('Node unique ID'),
+  id: z.string().describe('Node unique ID').meta({ title: 'ID' }),
   type: z.string().min(1).describe(
     'Action type — a built-in FlowNodeAction id or a plugin-registered node type. ' +
     'Validated against the live action registry at registerFlow() (ADR-0018), not by a closed enum.',
-  ),
-  label: z.string().describe('Node label'),
+  ).meta({ title: 'Node Type' }),
+  label: z.string().describe('Node label').meta({ title: 'Label' }),
 
   /** Node Configuration Options (Specific to type) */
-  config: z.record(z.string(), z.unknown()).optional().describe('Node configuration'),
+  config: z.record(z.string(), z.unknown()).optional().describe('Node configuration').meta({ title: 'Configuration' }),
 
   /**
    * Connector Action Configuration
@@ -347,7 +348,7 @@ function flowNodeObject() { return strictObject(
       actionId: z.string().describe('Action key declared by the connector'),
       input: z.record(z.string(), z.unknown()).optional().describe('Mapped inputs for the action'),
     },
-  ).optional(),
+  ).optional().meta({ title: 'Connector Action' }),
 
   /**
    * UI Position (for the canvas).
@@ -367,10 +368,11 @@ function flowNodeObject() { return strictObject(
         'ever been written.',
     },
     { x: z.number(), y: z.number() },
-  ).optional(),
+  ).optional().meta({ title: 'Canvas Position' }),
 
   /** Node-level execution timeout */
-  timeoutMs: z.number().int().min(0).optional().describe('Maximum execution time for this node in milliseconds'),
+  timeoutMs: z.number().int().min(0).optional().describe('Maximum execution time for this node in milliseconds')
+    .meta({ title: 'Timeout (ms)' }),
 
   /** Node input schema declaration for Studio form generation and runtime validation */
   inputSchema: z.record(z.string(), strictObject(
@@ -398,7 +400,7 @@ function flowNodeObject() { return strictObject(
       required: z.boolean().default(false).describe('Whether the parameter is required'),
       description: z.string().optional().describe('Parameter description'),
     },
-  )).optional().describe('Input parameter schema for this node'),
+  )).optional().describe('Input parameter schema for this node').meta({ title: 'Input Schema' }),
 
   // `outputSchema` REMOVED (#3896 audit close-out): declared, never validated —
   // no engine path checked node outputs against it (ledger: dead).
@@ -491,7 +493,7 @@ function flowNodeObject() { return strictObject(
       + 'Run `os migrate meta --from 16` to list the mechanical edits for existing '
       + 'sources; apply them by hand.',
     ),
-  }).optional().describe('Configuration for wait node event resumption'),
+  }).optional().describe('Configuration for wait node event resumption').meta({ title: 'Wait Event' }),
 
   /**
    * Boundary Event Configuration (for 'boundary_event' nodes)
@@ -534,7 +536,7 @@ function flowNodeObject() { return strictObject(
     timerDuration: z.string().optional().describe('ISO 8601 duration for timer boundary events'),
     /** Signal name — only for signal boundary events */
     signalName: z.string().optional().describe('Named signal to catch'),
-  }).optional().describe('Configuration for boundary events attached to host nodes'),
+  }).optional().describe('Configuration for boundary events attached to host nodes').meta({ title: 'Boundary Event' }),
 }); }
 
 /**
@@ -559,9 +561,9 @@ export const FlowEdgeSchema = lazySchema(() => strictObject(
       'predicate or endpoint the author wrote was quietly ignored.',
   },
   {
-  id: z.string().describe('Edge unique ID'),
-  source: z.string().describe('Source Node ID'),
-  target: z.string().describe('Target Node ID'),
+  id: z.string().describe('Edge unique ID').meta({ title: 'ID' }),
+  source: z.string().describe('Source Node ID').meta({ title: 'From Node' }),
+  target: z.string().describe('Target Node ID').meta({ title: 'To Node' }),
 
   /**
    * Condition for this path (only for decision/branch nodes).
@@ -583,16 +585,17 @@ export const FlowEdgeSchema = lazySchema(() => strictObject(
     + 'envelope carrying a non-blank `source` — an `ast`-only envelope, and a `source` that is blank after '
     + 'trimming, are refused at authoring because the engine evaluates `source` alone and would otherwise answer '
     + 'a silent `false`.',
-  ),
+  ).meta({ title: 'Condition' }),
 
   type: z.enum(['default', 'fault', 'conditional', 'back'])
     .default('default')
     .describe(
       'Connection type: default (normal flow), fault (error path), conditional (expression-guarded), '
       + 'or back (ADR-0044 declared back-edge — traversed normally at run time, but excluded from DAG '
       + 'cycle validation so a revise/rework loop can re-enter an earlier node)',
-    ),
-  label: z.string().optional().describe('Label on the connector'),
+    )
+    .meta({ title: 'Connection Type' }),
+  label: z.string().optional().describe('Label on the connector').meta({ title: 'Label' }),
 
   /**
    * Default Sequence Flow marker (BPMN Default Flow semantics).
@@ -614,7 +617,8 @@ export const FlowEdgeSchema = lazySchema(() => strictObject(
     .describe(
       'BPMN default flow: traverse this edge only when no sibling conditional edge of the same '
       + 'source node matched. Mutually exclusive with `condition`; at most one per source node.',
-    ),
+    )
+    .meta({ title: 'Default Path' }),
 }));
 
 /**