Host checked adapter-object controllers through bounded registries (WI-13)

src/capability-model/types.ts

@@ -326,6 +326,8 @@ export interface PackageRevision {
 
 /** Checked adapter registration. Implementations remain ordinary object capabilities. */
 export interface PackageController {
+  /** Optional opt-in discovery: a bounded checked workspace query in this package. */
+  registry?: string;
   id: string;
   subject: InterfaceRevisionId;
   snapshot: OperationId;