feat(spec,lint): pin <ObjectChart> aggregate result-column naming and validate its axes (#3701) (#3725)

#3684 extended ADR-0021 axis checking to report charts, list-view charts and
dataset-bound page chart components, but had to leave the react <ObjectChart>
block out: it is OBJECT-bound (objectName + an inline aggregate), and nothing
in the repo said what the aggregated result columns were called.

Record the convention rather than invent one: an object-bound aggregate returns
rows keyed by the RAW FIELD NAMES — `groupBy` for the category column, `field`
for the value column, the literal `count` for a fieldless count, plus
`<field>__comparison` under a comparison overlay. The deliberate opposite of
the dataset path, whose rows are keyed by the declared measure name.

spec: ChartAggregateSchema/ChartGroupBySchema/ChartAggregateFunctionSchema
replace the '{ field, function, groupBy }' description string and reject a
non-count function with no field; chart-aggregate.ts records the convention
and exports chartAggregateCategoryKey/chartAggregateValueKey/
chartAggregateResultKeys. The <ObjectChart> contract now names the props the
block actually reads (chartType/xAxisKey/series join the overlay; ChartConfig's
inert xAxis/yAxis/series leave dataProps per ADR-0078).

lint: validate-react-page-props now reads attribute VALUES for <ObjectChart> —
react-chart-field-unknown, react-chart-aggregate-invalid,
react-chart-axis-unknown, react-chart-axis-inert. Static literals only; state-
driven props, spreads, inline data, and cross-package objects are skipped.

The end state remains runtime-honors-ChartConfig: tracked in #3729 (framework
contract/lint flip) + objectui#2880 (renderer implementation), after which the
overlay dialect retires.

Author: os-zhuang

.changeset/objectchart-aggregate-result-columns.md

@@ -0,0 +1,60 @@
+---
+'@objectstack/spec': minor
+'@objectstack/lint': minor
+---
+
+`<ObjectChart>` aggregate result-column naming is now a contract, and its axis bindings are validated (issue #3701)
+
+Split out of #3583 Phase 2 (#3684), which extended ADR-0021 axis checking to
+report charts, list-view charts, and dataset-bound page chart components but had
+to leave the react `<ObjectChart>` block out: it is OBJECT-bound (`objectName` +
+an inline `aggregate`), `aggregate` existed in the contract only as the
+description string `'{ field, function, groupBy }'`, and nothing in the repo said
+what the aggregated result columns were called. Without that, `xAxis`/`yAxis` had
+nothing to resolve against, and guessing a convention would have manufactured
+false positives (ADR-0072 D1).
+
+**The convention, recorded rather than invented.** Every path that can serve an
+object-bound chart already agreed — the engine's structured-`groupBy` aggregate
+(whose alias objectui sets to `field || function`), the legacy analytics query
+(which remaps its measure key back to `field`), the client-side fallback, and the
+console's own chart-view wiring (`xAxisKey: groupBy`, `series[].dataKey: field`).
+`packages/spec/src/ui/chart-aggregate.ts` writes it down and exports it:
+
+* an object-bound aggregate returns rows keyed by the **raw field names** —
+  `groupBy` for the category column, `field` for the value column, the literal
+  `count` for a fieldless count, plus `<field>__comparison` under a comparison
+  overlay;
+* `chartAggregateCategoryKey` / `chartAggregateValueKey` / `chartAggregateResultKeys`
+  derive those columns so producers and checkers cannot re-derive them apart;
+* `ChartAggregateSchema` replaces the description string with a real Zod schema
+  and rejects a non-`count` function with no `field` (which used to reach the
+  renderer as `sum(undefined)` and render blank).
+
+This is the deliberate opposite of the dataset path, whose rows are keyed by the
+declared measure `name` (`sum_amount`) — the trap `chart-measure-unknown` catches.
+Only the dataset path has an author-chosen name to key by.
+
+**`<ObjectChart>`'s contract now names the props it actually reads.** The block
+consumes `xAxisKey` and `series[].dataKey`; `ChartConfig`'s `xAxis`/`yAxis`/`series`
+shapes reached it and were silently dropped, which ADR-0078 forbids. They are
+removed from the block's `dataProps`; `chartType`, `xAxisKey`, and `series` are
+declared in the React overlay where the other bindings live.
+
+**`validate-react-page-props` now reads attribute VALUES**, not just names, for
+`<ObjectChart>`:
+
+* `react-chart-field-unknown` (error) — `aggregate.field` / `aggregate.groupBy`
+  naming a field the bound object does not declare;
+* `react-chart-aggregate-invalid` (error) — an unimplemented aggregation
+  function, or a non-`count` function with nothing to aggregate;
+* `react-chart-axis-unknown` (error) — `xAxisKey` / `series[].dataKey` naming a
+  column the aggregate does not return (including a dataset-style `sum_total`),
+  or a category axis bound to the value column;
+* `react-chart-axis-inert` (warning) — the `xAxis` / `yAxis` shapes this block
+  never reads.
+
+Value reading is opt-in per block and evaluates only static literals: a prop
+driven by React state or a variable, a usage carrying a `{...spread}`, a chart
+given inline `data`, and objects another package defines are all skipped
+silently — an unresolvable binding is not a wrong one.

content/docs/deployment/validating-metadata.mdx

@@ -156,8 +156,12 @@ chart: { type: 'bar', xAxis: 'status', yAxis: 'estimate_hours' }
 
 An axis naming a measure the dataset declares but this chart does not *select*
 (not in `values`) is a **warning**: the query never returns it, so it plots
-nothing. The react `<ObjectChart>` block is object-bound rather than
-dataset-bound and is not checked here.
+nothing.
+
+The react `<ObjectChart>` block is **object-bound** (`objectName` + an inline
+`aggregate`) rather than dataset-bound, so it is checked by the react-page prop
+gate below against a different rule — its result rows are keyed by the raw field
+names, exactly the opposite of the dataset case.
 
 ### 7. Navigation exposing objects nobody can read
 
@@ -177,6 +181,34 @@ ships. Skipped for platform-provided objects (whose own packages grant them),
 for stacks that declare no permission sets at all, and when any set carries a
 wildcard (`objects: { '*': … }`) grant.
 
+### 8. `<ObjectChart>` axes bound to the wrong result column
+
+A `kind:'react'` page's `<ObjectChart>` is **object-bound**: `objectName` plus an
+inline `aggregate`, run as one ad-hoc query. Its rows come back keyed by the
+**raw field names** the aggregate was given — `groupBy` names the category
+column, `field` names the value column (the literal `count` for a fieldless
+`count`). That is the exact opposite of the dataset case in §6, and mixing the
+two conventions up is the usual cause of a chart that renders axes and no bars.
+
+```jsx
+<ObjectChart objectName="invoice" chartType="bar"
+  aggregate={{ field: 'total', function: 'sum', groupBy: 'status' }}
+  xAxisKey="status" series={[{ dataKey: 'sum_total' }]} />
+//                                     ↑ a dataset-style measure name; the rows
+//                                       are keyed `total` → error
+```
+
+Both halves are checked: `aggregate.field` / `aggregate.groupBy` must be fields
+the object declares, and `xAxisKey` / `series[].dataKey` must name a column the
+aggregate actually returns (plus `<field>__comparison` when a comparison overlay
+is on). `ChartConfig`'s `xAxis` / `yAxis` shapes are **not** read by this block
+and are reported as inert (warning).
+
+Skipped, to keep false positives at zero: any prop whose value is not a static
+literal (it comes from React state or a variable), a usage carrying a `{...spread}`,
+a chart given static `data` (its columns are the author's own), and objects
+another package defines.
+
 ## The one gate, two entry points
 
 `os validate` and `os build` (alias of `os compile`) run the **same** validator:

content/docs/references/ui/chart.mdx

@@ -18,13 +18,41 @@ Provides a comprehensive set of chart types for data visualization.
 ## TypeScript Usage
 
 ```typescript
-import { ChartAnnotation, ChartAxis, ChartConfig, ChartInteraction, ChartSeries, ChartType } from '@objectstack/spec/ui';
-import type { ChartAnnotation, ChartAxis, ChartConfig, ChartInteraction, ChartSeries, ChartType } from '@objectstack/spec/ui';
+import { ChartAggregate, ChartAggregateFunction, ChartAnnotation, ChartAxis, ChartConfig, ChartGroupBy, ChartInteraction, ChartSeries, ChartType } from '@objectstack/spec/ui';
+import type { ChartAggregate, ChartAggregateFunction, ChartAnnotation, ChartAxis, ChartConfig, ChartGroupBy, ChartInteraction, ChartSeries, ChartType } from '@objectstack/spec/ui';
 
 // Validate data
-const result = ChartAnnotation.parse(data);
+const result = ChartAggregate.parse(data);
 ```
 
+---
+
+## ChartAggregate
+
+Inline aggregation for an object-bound chart
+
+### Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **field** | `string` | optional | Field to aggregate — required for sum/avg/min/max, optional for count |
+| **function** | `Enum<'count' \| 'sum' \| 'avg' \| 'min' \| 'max'>` | ✅ | Aggregation function |
+| **groupBy** | `string \| { field: string; dateGranularity?: Enum<'day' \| 'week' \| 'month' \| 'quarter' \| 'year'>; alias?: string }` | ✅ | Field the rows are grouped by — the chart category axis |
+
+
+---
+
+## ChartAggregateFunction
+
+### Allowed Values
+
+* `count`
+* `sum`
+* `avg`
+* `min`
+* `max`
+
+
 ---
 
 ## ChartAnnotation
@@ -85,6 +113,35 @@ const result = ChartAnnotation.parse(data);
 | **aria** | `{ ariaLabel?: string; ariaDescribedBy?: string; role?: string }` | optional | ARIA accessibility attributes |
 
 
+---
+
+## ChartGroupBy
+
+### Union Options
+
+This schema accepts one of the following structures:
+
+#### Option 1
+
+Field to group by
+
+Type: `string`
+
+---
+
+#### Option 2
+
+### Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **field** | `string` | ✅ | Field to group by |
+| **dateGranularity** | `Enum<'day' \| 'week' \| 'month' \| 'quarter' \| 'year'>` | optional | Bucket date values into uniform periods |
+| **alias** | `string` | optional | Alias for the projected group value (defaults to `field`) — this becomes the category column |
+
+---
+
+
 ---
 
 ## ChartInteraction

examples/app-showcase/src/ui/pages/renewals-pipeline.page.ts

@@ -18,6 +18,11 @@ import { definePage } from '@objectstack/spec/ui';
  *     cross-object reads declaratively (zero data code).
  * (This comparison absorbed the former Account Cockpit page.)
  *
+ * The chart's axes are bound explicitly (#3701) to show the object-bound
+ * result-column rule: an inline `aggregate` returns rows keyed by the RAW
+ * FIELD NAMES — `status` (its `groupBy`) and `total` (its `field`) — not by a
+ * dataset-style measure name. `os validate` now checks both halves.
+ *
  * Styling (ADR-0065): no Tailwind — inline `style={{}}` with `hsl(var(--token))`;
  * data blocks and the drawer bring their own compiled styling. The drawer sets
  * NO pixel width: per #2578 pixel widths are deprecated (the author can't know
@@ -114,7 +119,7 @@ function Page() {
               <Stat label="Open AR" value={related.openInvoices} accent="hsl(38 92% 50%)" />
             </div>
 
-            <ObjectChart objectName="showcase_invoice" aggregate={{ field: 'total', function: 'sum', groupBy: 'status' }} title="Invoice value by status" showLegend={true} />
+            <ObjectChart objectName="showcase_invoice" chartType="bar" aggregate={{ field: 'total', function: 'sum', groupBy: 'status' }} xAxisKey="status" series={[{ dataKey: 'total', label: 'Invoice value' }]} title="Invoice value by status" showLegend={true} />
 
             <RecordRelatedList objectName="showcase_account" recordId={sel} relationshipField="account" columns={['name', 'status', 'total']} limit={5} showViewAll={true} title="Invoices" />
 

packages/lint/src/index.ts

@@ -75,7 +75,13 @@ export { validateJsxPages } from './validate-jsx-pages.js';
 export type { JsxPageFinding, JsxPageSeverity } from './validate-jsx-pages.js';
 export { validateReactPages } from './validate-react-pages.js';
 export type { ReactPageFinding, ReactPageSeverity } from './validate-react-pages.js';
-export { validateReactPageProps } from './validate-react-page-props.js';
+export {
+  validateReactPageProps,
+  REACT_CHART_FIELD_UNKNOWN,
+  REACT_CHART_AGGREGATE_INVALID,
+  REACT_CHART_AXIS_UNKNOWN,
+  REACT_CHART_AXIS_INERT,
+} from './validate-react-page-props.js';
 export type { ReactPropFinding, ReactPropSeverity } from './validate-react-page-props.js';
 export { validatePageSourceStyling, PAGE_SOURCE_CLASSNAME } from './validate-page-source-styling.js';
 export type { SourceStyleFinding, SourceStyleSeverity } from './validate-page-source-styling.js';

packages/lint/src/validate-chart-bindings.ts

@@ -27,15 +27,14 @@
  *      binding shape as a list chart, but it arrives through the untyped
  *      `properties` bag.
  *
- * Deliberately NOT covered: the react `<ObjectChart>` block. It is
- * OBJECT-bound (`objectName` + an inline `aggregate`), not dataset-bound, and
- * nothing in the repo pins down what the runtime names the aggregated result
- * column — so there is no defensible answer for what its `yAxis[].field`
- * should resolve against. Guessing one would manufacture false positives on
- * the single authored usage. Its `aggregate.field` / `groupBy` ARE checkable
- * against the object's fields, but only by reading JSX attribute values, which
- * `validate-react-page-props` does not do today. Left for a follow-up rather
- * than half-built (ADR-0078 §5: verify, then enforce).
+ * Not covered HERE, and deliberately so: the react `<ObjectChart>` block. It is
+ * OBJECT-bound (`objectName` + an inline `aggregate`), so its result rows are
+ * keyed by the RAW FIELD NAMES rather than by a measure name — the opposite
+ * convention, which would make `chart-measure-unknown`'s message a lie. It also
+ * arrives as JSX rather than config, so it needs the TypeScript compiler this
+ * rule has no business loading. It is checked by `validate-react-page-props`
+ * instead, against the naming convention `chartAggregateResultKeys`
+ * (`@objectstack/spec/ui`) now pins down (#3701).
  */
 
 export const CHART_DIMENSION_UNKNOWN = 'chart-dimension-unknown';