feat(types): type object-chart colors as palette or value→color map (#1936)

ObjectChartSchema.colors now accepts a positional palette (string[]) OR an
explicit value→color map (Record<value,color>, kanban-style), matching the
renderer that resolves select/lookup option colors per category and lets
them win over the positional palette.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: os-zhuang

.changeset/object-chart-colors-schema.md

@@ -0,0 +1,11 @@
+---
+"@object-ui/types": patch
+---
+
+feat(types): type `object-chart` `colors` as a palette OR a value→color map
+
+`ObjectChartSchema.colors` now accepts either a positional palette (`string[]`)
+or an explicit value→color map (`Record<value, color>`, kanban-style). This
+matches the chart renderer, which resolves a select/lookup dimension's option
+colors per category and lets them (and any explicit map) win over the
+positional palette — so health green/red/yellow paints semantically.

packages/types/src/zod/objectql.zod.ts

@@ -465,6 +465,15 @@ export const ObjectChartSchema = BaseSchema.extend({
   dataset: z.string().optional().describe('Semantic-layer dataset name (ADR-0021)'),
   dimensions: z.array(z.string()).optional().describe('Dataset dimension names'),
   values: z.array(z.string()).optional().describe('Dataset measure names'),
+  // Colors are overloaded kanban-style: a string[] is the positional palette
+  // (applied per category in order; fallback only), while a Record<value,color>
+  // is an explicit value→color map. A select/lookup dimension's option colors —
+  // and any explicit map — take precedence over the positional palette per
+  // category, so health green/red/yellow paints semantically.
+  colors: z.union([
+    z.array(z.string()),
+    z.record(z.string(), z.string()),
+  ]).optional().describe('Positional palette (string[]) OR a value→color map ({ value: color }, kanban-style). Select/lookup option colors and explicit maps win over the palette per category.'),
 });
 
 /**