fix: drop removed ObjectSchema detail block (ADR-0085) (#423)

framework ADR-0085 removed the per-surface `detail` UI-hints block from
ObjectSchema — presentation intent now lives in cross-surface semantic
roles (nameField / compactLayout→highlightFields / stageField /
fieldGroups).

`detail.hideReferenceRail` was a no-op here anyway: the Reference Rail
is OFF by default and the only key that could enable it was never
spec-typed, so these pages were already single-column without the flag.
Removing the block changes no rendered behavior; it only restores
typecheck against the new spec.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Author: os-zhuang

src/objects/product.object.ts

@@ -19,13 +19,6 @@ export const Product = ObjectSchema.create({
   nameField: 'display_title',
   compactLayout: ['product_code', 'name', 'category', 'is_active'],
 
-  // Product detail pages are catalog-style — users edit attributes in
-  // place, they don't browse lateral relationships. Suppress the
-  // Reference Rail so the single-column form gets full width.
-  detail: {
-    hideReferenceRail: true,
-  },
-
   fieldGroups: [
     { key: 'basic',    label: 'Product Information', icon: 'info' },
     { key: 'pricing',  label: 'Pricing & Billing',   icon: 'dollar-sign' },

src/objects/task.object.ts

@@ -10,13 +10,6 @@ export const Task = ObjectSchema.create({
   icon: 'check-square',
   description: 'Activities and to-do items',
 
-  // Tasks are atomic action items, not Hub objects. Keep the detail
-  // page single-column so the assignment + due-date + completion flow
-  // dominates instead of being shoulder-bumped by a related-list rail.
-  detail: {
-    hideReferenceRail: true,
-  },
-
   fields: {
     // Task Information
     subject: Field.text({