@@ -0,0 +1,8 @@
+---
+'@object-ui/plugin-dashboard': minor
+---
+
+Clause-②: yes (widening)
+Metadata-protocol: added
+
+A dataset-bound KPI tile and a cross-tab cell colour their period-over-period delta by the measure's declared `polarity` (`fields[].polarity` on the dataset answer, objectstack#26602). `'lower'` draws a rise red and a fall green, so a slower approval turnaround no longer reads as good news. `'neutral'` draws the delta in the muted text colour, with no green and no red. `'higher'`, and an undeclared polarity, keep the colours every delta had before: a rise green, a fall red. The arrow still shows which way the number moved under every polarity.
@@ -0,0 +1,16 @@
+---
+'@objectstack/spec': minor
+'@objectstack/service-analytics': minor
+'@objectstack/platform-objects': minor
+---
+
+feat(spec): a dataset measure declares its `polarity`, so a lower-is-better KPI draws a rising delta as bad news
+
+Clause-②: yes (widening)
+Metadata-protocol: added
+
+`DatasetMeasureSchema` declares one optional key, `polarity`, with three values (`DatasetMeasurePolarity`): `'higher'` (a rise is good), `'lower'` (a fall is good: turnaround days, overdue counts, cost) and `'neutral'` (neither direction is good or bad). It is declared on the measure, the semantic layer, so every widget over the measure agrees, and not on a widget's `compareTo`, which is the executor's closed comparison directive. An undeclared polarity keeps today's colours: a rise green, a fall red. Nothing infers a polarity from the measure's name. The near-miss keys `betterWhen`, `direction`, `goodDirection` and `trendDirection` are pointed at `polarity`, and the boolean spellings `higherIsBetter` / `lowerIsBetter` are answered with the three values.
+
+The dataset answer's column descriptor declares the same vocabulary as `fields[].polarity` (`AnalyticsResult` and `AnalyticsResultResponseSchema`), and the analytics service relays the measure's declared value onto it, on the live query and the draft-data preview alike, the measure's `__compare` column included. An undeclared measure and every dimension column carry no `polarity` key, so an answer over a dataset that declares none is unchanged.
+
+The dataset form's measures repeater offers `polarity`, labelled in every shipped locale (`@objectstack/platform-objects` metadata-form catalogs).
@@ -474,7 +474,8 @@ is executed. `POST /analytics/sql` refuses the same keys. To order by a member,
 <Callout type="info">
 **`fields[]` is the resolved presentation surface — read it first.** Each entry carries
 `name` and `type` and, when the producer declares them, `label`, `format`, `currency`,
-`percentScale`, `builtinAggregate`, `aggregate` and `nullLabel`: the optional members
+`percentScale`, `builtinAggregate`, `aggregate`, `nullLabel` and `polarity` (which direction
+of a measure's change is good news, relayed from the dataset measure): the optional members
 `AnalyticsResultResponseSchema` declares (`packages/spec/src/api/analytics.zod.ts`),
 mirrored member for member by `IAnalyticsService.query`'s `AnalyticsResult` and bound to
 it at compile time. Optional means a given column may omit them — read them defensively,
 
@@ -260,6 +260,10 @@ measure values by hand:
   result `fields`, so a KPI or chart legend reads "Total Spent / $616,000"
   rather than "spent_sum / 616000". The renderer applies the `format` at display
   time (it can't be baked into the numeric row value charts plot).
+  A measure that declares `polarity` (`higher`, `lower` or `neutral`: which
+  direction of change is good news) carries it on its column too, so a
+  period-over-period delta on a lower-is-better KPI draws a rise as bad news;
+  undeclared keeps a rise green and a fall red.
 
 ## Migrating from inline queries
 
 
@@ -1,7 +1,7 @@
 ---
 title: Protocol reference — every schema by module
 navTitle: Protocol Reference
-description: Every schema published by @objectstack/spec — 1558 schemas across 14 protocol modules
+description: Every schema published by @objectstack/spec — 1559 schemas across 14 protocol modules
 ---
 
 {/* ⚠️  AUTO-GENERATED — DO NOT EDIT. Run build-docs.ts to regenerate. Hand-written docs live in the module folders under content/docs/. */}
@@ -33,8 +33,8 @@ counts are sums of the rows they head. Regenerate with
 | [Shared Protocol](/docs/references/shared) | 10 | 31 | Primitives used across every protocol — identifiers, HTTP, expressions, error maps, enums. |
 | [Studio Protocol](/docs/references/studio) | 3 | 35 | Studio designer metadata — the authoring surfaces for the protocols above. |
 | [System Protocol](/docs/references/system) | 37 | 287 | The runtime environment — logging, jobs, cache, metrics, notifications, i18n and compliance. |
-| [UI Protocol](/docs/references/ui) | 16 | 171 | Apps, pages, views, dashboards, reports, actions and themes — the ObjectUI layer. |
-| **Total** | **202** | **1558** | 14 protocol modules |
+| [UI Protocol](/docs/references/ui) | 16 | 172 | Apps, pages, views, dashboards, reports, actions and themes — the ObjectUI layer. |
+| **Total** | **202** | **1559** | 14 protocol modules |
 
 ---
 
@@ -369,7 +369,7 @@ The runtime environment — logging, jobs, cache, metrics, notifications, i18n a
 
 ## UI Protocol
 
-**Source:** `packages/spec/src/ui/` · **Import:** `@objectstack/spec/ui` · **16 pages, 171 schemas**
+**Source:** `packages/spec/src/ui/` · **Import:** `@objectstack/spec/ui` · **16 pages, 172 schemas**
 
 Apps, pages, views, dashboards, reports, actions and themes — the ObjectUI layer.
 
@@ -382,7 +382,7 @@ Apps, pages, views, dashboards, reports, actions and themes — the ObjectUI lay
 | [`chart.zod.ts`](/docs/references/ui/chart) | `ChartAggregate`, `ChartAggregateFunction`, `ChartAnnotation`, `ChartAxis`, `ChartConfig`, `ChartDrillDown`, `ChartGroupBy`, `ChartInteraction`, `ChartSeries`, `ChartType` |
 | [`component.zod.ts`](/docs/references/ui/component) | `ActionButtonProps`, `ActionGroupProps`, `ActionIconProps`, `ActionMenuProps`, `ElementButtonProps`, `ElementDefinitionListProps`, `ElementFilterProps`, `ElementFormProps`, `ElementImageProps`, `ElementMetadataViewerProps`, `ElementNumberProps`, `ElementRecordPickerProps`, `ElementRepeaterProps`, `ElementTextInputProps`, `ElementTextProps`, `ObjectCalendarProps`, `ObjectFormProps`, `ObjectGanttProps`, `ObjectGridProps`, `ObjectKanbanProps`, `ObjectMapProps`, `ObjectMasterDetailFormProps`, `ObjectMetricProps`, `ObjectTimelineProps`, `ObjectTreeProps`, `PageAccordionProps`, `PageCardProps`, `PageContainerProps`, `PageHeaderProps`, `PageTabsProps`, `RecordActivityProps`, `RecordAlertAction`, `RecordAlertProps`, `RecordChatterProps`, `RecordDetailsProps`, `RecordHighlightsField`, `RecordHighlightsProps`, `RecordHistoryProps`, `RecordLineItemsProps`, `RecordPathProps`, `RecordQuickActionsProps`, `RecordReferenceRailProps`, `RecordRelatedListProps`, `ReferenceRailEntry` |
 | [`dashboard.zod.ts`](/docs/references/ui/dashboard) | `Dashboard`, `DashboardHeader`, `DashboardHeaderAction`, `DashboardWidget`, `DashboardWidgetChartConfig`, `DashboardWidgetOptions`, `GlobalFilter`, `GlobalFilterOptionsFrom`, `WidgetActionType`, `WidgetColorVariant` |
-| [`dataset.zod.ts`](/docs/references/ui/dataset) | `Dataset`, `DatasetDimension`, `DatasetDurationUnit`, `DatasetMeasure`, `DatasetMeasureDuration`, `DerivedMeasureOp` |
+| [`dataset.zod.ts`](/docs/references/ui/dataset) | `Dataset`, `DatasetDimension`, `DatasetDurationUnit`, `DatasetMeasure`, `DatasetMeasureDuration`, `DatasetMeasurePolarity`, `DerivedMeasureOp` |
 | [`expression-bindable-text-keys.zod.ts`](/docs/references/ui/expression-bindable-text-keys) | `ExpressionBindableTextKey` |
 | [`i18n.zod.ts`](/docs/references/ui/i18n) | `AriaProps`, `I18nLabel`, `InlineLocaleMap` |
 | [`notification.zod.ts`](/docs/references/ui/notification) | `NotificationPosition`, `NotificationSeverity`, `NotificationType` |
 
@@ -1,7 +1,7 @@
 ---
 title: Dataset schema — UI Protocol reference
 navTitle: Dataset
-description: "Analytics Dataset — the one semantic layer. Reference for Dataset, DatasetDimension, DatasetDurationUnit and 3 more: every property with its type and default."
+description: "Analytics Dataset — the one semantic layer. Reference for Dataset, DatasetDimension, DatasetDurationUnit and 4 more: every property with its type and default."
 ---
 
 {/* ⚠️  AUTO-GENERATED — DO NOT EDIT. Run build-docs.ts to regenerate. Hand-written docs live in the module folders under content/docs/. */}
@@ -34,8 +34,8 @@ layer is absorbed/retired in a later phase (D-A).
 ## TypeScript Usage
 
 ```typescript
-import { DatasetSchema, DatasetDimensionSchema, DatasetDurationUnit, DatasetMeasureSchema, DatasetMeasureDurationSchema, DerivedMeasureOp } from '@objectstack/spec/ui';
-import type { Dataset, DatasetDimension, DatasetDurationUnit, DatasetMeasure, DatasetMeasureDuration } from '@objectstack/spec/ui';
+import { DatasetSchema, DatasetDimensionSchema, DatasetDurationUnit, DatasetMeasureSchema, DatasetMeasureDurationSchema, DatasetMeasurePolarity, DerivedMeasureOp } from '@objectstack/spec/ui';
+import type { Dataset, DatasetDimension, DatasetDurationUnit, DatasetMeasure, DatasetMeasureDuration, DatasetMeasurePolarity } from '@objectstack/spec/ui';
 
 // Validate data
 const result = DatasetSchema.parse(data);
@@ -88,6 +88,7 @@ const result = DatasetSchema.parse(data);
 | **filter** | `any` | optional |  |
 | **format** | `string` | optional | Numeral pattern for a NUMERIC measure — grouping, decimals, percent; e.g. "0,0.00", "0.0%". An amount takes its symbol from `currency`, not from a "$" in the pattern. A DATE-valued measure never reads a date pattern: `"YYYY-MM-DD"` renders that arm's default face. A date or datetime value reads `format` as a display style — `short` or `relative`, honoured on both. |
 | **currency** | `string` | optional | Display currency code (ISO 4217) |
+| **polarity** | `Enum<'higher' \| 'lower' \| 'neutral'>` | optional | Which direction of change is good news: higher (rise green, fall red), lower (fall green, rise red) or neutral (no good/bad colour). Colours a period-over-period delta; undeclared keeps rise green, fall red. |
 | **derived** | `{ op: Enum<'ratio' \| 'sum' \| 'difference' \| 'product'>; of: string[] }` | optional |  |
 | **duration** | `{ from: string; to: string; unit: Enum<'seconds' \| 'minutes' \| 'hours' \| 'days'> }` | optional | Time between two datetime columns of each record (`{ from, to, unit }`), reduced by `aggregate` (avg / min / max / sum). Records with either instant null are excluded. Replaces `field`. |
 
@@ -143,6 +144,7 @@ const result = DatasetSchema.parse(data);
 | **filter** | `any` | optional |  |
 | **format** | `string` | optional | Numeral pattern for a NUMERIC measure — grouping, decimals, percent; e.g. "0,0.00", "0.0%". An amount takes its symbol from `currency`, not from a "$" in the pattern. A DATE-valued measure never reads a date pattern: `"YYYY-MM-DD"` renders that arm's default face. A date or datetime value reads `format` as a display style — `short` or `relative`, honoured on both. |
 | **currency** | `string` | optional | Display currency code (ISO 4217) |
+| **polarity** | `Enum<'higher' \| 'lower' \| 'neutral'>` | optional | Which direction of change is good news: higher (rise green, fall red), lower (fall green, rise red) or neutral (no good/bad colour). Colours a period-over-period delta; undeclared keeps rise green, fall red. |
 | **derived** | `{ op: Enum<'ratio' \| 'sum' \| 'difference' \| 'product'>; of: string[] }` | optional |  |
 | **duration** | `{ from: string; to: string; unit: Enum<'seconds' \| 'minutes' \| 'hours' \| 'days'> }` | optional | Time between two datetime columns of each record (`{ from, to, unit }`), reduced by `aggregate` (avg / min / max / sum). Records with either instant null are excluded. Replaces `field`. |
 
@@ -168,6 +170,17 @@ const result = DatasetSchema.parse(data);
 | **unit** | `Enum<'seconds' \| 'minutes' \| 'hours' \| 'days'>` | ✅ | Unit of the result: the measure answers a number of these (1.5 with "days" is a day and a half). |
 
 
+---
+
+## DatasetMeasurePolarity
+
+### Allowed Values
+
+* `higher`
+* `lower`
+* `neutral`
+
+
 ---
 
 ## DerivedMeasureOp
 
@@ -103,7 +103,7 @@ selects `dimensions` (X / group / split) and `values` (the measures to plot):
 | `layout` | `object` | optional | Grid position and size (auto-flowed into the grid when omitted) |
 | `chartConfig` | `object` | optional | Chart **appearance**: `title`, `subtitle`, `description`, `colors`, `height`, `showLegend`, `showDataLabels`, `annotations`, `interaction`. The bound dataset decides which series exist and which column each one reads, so `type`, `xAxis`, `yAxis` and `series` are refused here — see below |
 | `colorVariant` | `enum` | optional | KPI/card accent color |
-| `compareTo` | `object` | optional | Period-over-period comparison: `{ kind: 'previousPeriod' \| 'previousYear', dimension? }`. Omit `dimension` when the selection dates exactly one time dimension — the runtime resolves it, and errors naming the candidates rather than guessing when it cannot. |
+| `compareTo` | `object` | optional | Period-over-period comparison: `{ kind: 'previousPeriod' \| 'previousYear', dimension? }`. Omit `dimension` when the selection dates exactly one time dimension — the runtime resolves it, and errors naming the candidates rather than guessing when it cannot. The delta is coloured by the measure's `polarity`: `'lower'` draws a rise red and a fall green, `'neutral'` draws neither; undeclared, a rise is green. |
 | `options` | `object` | optional | The query keys below. Presentation does not go here — see below |
 
 ### What `chartConfig` does **not** carry
@@ -147,6 +147,7 @@ Presentation has declared homes instead:
 | You want | Write it here |
 | :--- | :--- |
 | A number's format or currency | The dataset **measure**'s `format` and `currency` |
+| A KPI delta's good/bad colour (lower is better for turnaround, cost) | The dataset **measure**'s `polarity`: `'higher'`, `'lower'` or `'neutral'` |
 | A KPI tile's accent color | The widget's `colorVariant` |
 | A chart's look (colors, legend, data labels, height) | The widget's `chartConfig` |
 
 
@@ -2095,6 +2095,9 @@ export const enMetadataForms: NonNullable<TranslationData['metadataForms']> = {
       "measures.currency": {
         label: "Currency"
       },
+      "measures.polarity": {
+        label: "Polarity"
+      },
       "measures.derived": {
         label: "Derived From"
       },
 
@@ -2095,6 +2095,9 @@ export const esESMetadataForms: NonNullable<TranslationData['metadataForms']> =
       "measures.currency": {
         label: "Moneda"
       },
+      "measures.polarity": {
+        label: "Polaridad"
+      },
       "measures.derived": {
         label: "Derivada de"
       },
 
@@ -2095,6 +2095,9 @@ export const jaJPMetadataForms: NonNullable<TranslationData['metadataForms']> =
       "measures.currency": {
         label: "通貨"
       },
+      "measures.polarity": {
+        label: "極性"
+      },
       "measures.derived": {
         label: "派生元"
       },