fix: remove pointer variant from DesignPropertyValue, add ComponentTreeDesignPropertyValue [DX-990]

DesignPropertyValue is now the canonical base (ManualDesignValue | DesignTokenValue only),
matching upstream DesignPropertyValueSchema post INTEG-3511. New ComponentTreeDesignPropertyValue
union covers pointer and dimensioned as siblings at the tree-node level. ComponentNode.designProperties
updated accordingly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: tylerpina

lib/entities/component-type.ts

@@ -80,27 +80,32 @@ export type DesignTokenValue = {
 }
 
 // For designProperties[].defaultValue (definition level)
-// Upstream: DesignPropertyValueSchema (schema line 86-91)
+// Upstream: DesignPropertyValueSchema — canonical value only (no pointer, no dimensioned)
 export type DesignPropertyDefinitionValue = ManualDesignValue | DesignTokenValue
 
-// For componentTree node designProperties (tree-node level)
-// Upstream: ComponentTreeDesignPropertyValueSchema (schema line 101-104)
-export type DesignPropertyValue =
-  | ManualDesignValue
-  | DesignTokenValue
-  | DesignPropertyPointerValue
-  | Record<string, ManualDesignValue | DesignTokenValue | DesignPropertyPointerValue>
+// Canonical design property value — ManualDesignValue or DesignToken only
+// Upstream: DesignPropertyValueSchema (schema line 86-91)
+export type DesignPropertyValue = ManualDesignValue | DesignTokenValue
 
+// Dimensioned record — maps breakpoint keys to canonical values
+// Upstream: DimensionedDesignPropertyValueSchema — Record<string, DesignPropertyValueSchema>
 export type DimensionedDesignPropertyValue = Record<string, DesignPropertyValue>
 
+// Tree-node-level union — pointer and dimensioned are siblings of the canonical value
+// Upstream: ComponentTreeDesignPropertyValueSchema (schema line 101-104)
+export type ComponentTreeDesignPropertyValue =
+  | DesignPropertyValue
+  | DesignPropertyPointerValue
+  | DimensionedDesignPropertyValue
+
 // Tree node types for component tree
 export type ComponentNode = {
   id: string
   name?: string
   nodeType: 'Component'
   componentTypeId: string
   contentProperties: Record<string, ContentPropertyPointerValue | unknown> | string
-  designProperties: Record<string, DesignPropertyValue>
+  designProperties: Record<string, ComponentTreeDesignPropertyValue>
   slots: Record<string, TreeNode[]>
   contentBindings?: string
 }