Introduce persisted Web Studio component capabilities

src/capability-model/types.ts

@@ -291,11 +291,12 @@ export interface PackageRevision {
 }
 
 export type DependencyBinding =
-  | { kind: "state"; slotId: SlotId }
+  | { kind: "state"; slotId: SlotId; via?: EdgeTraversal }
   | {
       kind: "edge";
       edgeTypeId: EdgeTypeId;
       projectionId: EdgeProjectionId;
+      via?: EdgeTraversal;
     }
   | {
       kind: "receiver-interface";
@@ -308,6 +309,24 @@ export interface BoundDependency {
   binding: DependencyBinding;
 }
 
+/** Selects the object at the other end of an exactly-one relationship. */
+export interface EdgeTraversal {
+  edgeTypeId: EdgeTypeId;
+  projectionId: EdgeProjectionId;
+}
+
+/**
+ * Provisional get-or-create recipe for a relationship implementation. The
+ * host projection is supplied by the relationship's resolve binding; this
+ * projection originates at the object constructed for the relationship.
+ */
+export interface RelationshipMaterialization {
+  memberId: MemberId;
+  constructorAtomId: AtomId;
+  edgeTypeId: EdgeTypeId;
+  constructedProjectionId: EdgeProjectionId;
+}
+
 export type Binding =
   | {
       kind: "state";
@@ -337,6 +356,7 @@ export interface Conformance {
   interfaceRevisionId: InterfaceRevisionId;
   privateAttachments: PersistentAttachment[];
   operationBindings: OperationBinding[];
+  relationshipMaterializations: RelationshipMaterialization[];
 }
 
 export interface AtomConstructorBinding {