Introduce persisted Web Studio component capabilities

proto/quixos/orch.proto

@@ -11,6 +11,7 @@ service OrchestratorRuntime {
   rpc InvokeCapability(InvokeCapabilityRequest) returns (InvokeCapabilityResponse);
   rpc WatchCapability(WatchCapabilityRequest) returns (stream WatchCapabilityEvent);
   rpc ConstructObject(ConstructObjectRequest) returns (ConstructObjectResponse);
+  rpc ResolveOrConstructRelatedObject(ResolveOrConstructRelatedObjectRequest) returns (ResolveOrConstructRelatedObjectResponse);
   rpc GetWorkspace(GetWorkspaceRequest) returns (GetWorkspaceResponse);
   rpc ListPackageDescriptors(ListPackageDescriptorsRequest) returns (ListPackageDescriptorsResponse);
   rpc ListPackageRuntimes(ListPackageRuntimesRequest) returns (ListPackageRuntimesResponse);
@@ -24,6 +25,16 @@ message ConstructObjectRequest {
 }
 message ConstructObjectResponse { camino.CaminoObject object = 1; }
 
+message ResolveOrConstructRelatedObjectRequest {
+  string object_id = 1;
+  string interface_revision_id = 2;
+  string member_id = 3;
+}
+message ResolveOrConstructRelatedObjectResponse {
+  camino.CaminoObject object = 1;
+  bool constructed = 2;
+}
+
 message InvokeCapabilityRequest {
   quixos.CapabilityRef capability = 1;
   string object_id = 2;

proto/quixos/refs.proto

@@ -20,6 +20,9 @@ message InjectedDependency {
     string receiver_interface_revision_id = 4;
     string constructor_atom_id = 5;
   }
+  // Defaults to the invocation receiver. A checked dependency traversal can
+  // select a related object explicitly before the package runtime starts.
+  string object_id = 6;
 }
 
 message EdgeDependency {