Expose authoritative lifecycle deletion through capability bindings

src/execution-world/kernel.ts

@@ -44,16 +44,11 @@ export function compileKernelProgram(plan: ExecutionPlan): unknown {
         });
       } else {
         const endpoints = storage.endpoints.map((endpoint) => {
-          if (
-            endpoint.ordered ||
-            endpoint.keyType ||
-            endpoint.retainOther ||
-            (endpoint.onDelete && endpoint.onDelete !== "restrict")
-          )
+          if (endpoint.ordered || endpoint.keyType || endpoint.retainOther)
             throw new ExecutionPlanError(
               "UNSUPPORTED_GRAPH_FEATURE",
               storage.id,
-              "Ordered/keyed/deletion policies require LF-18",
+              "Ordered/keyed relations and automatic retention are not implemented",
             );
           return {
             projection: endpoint.projectionId,
@@ -65,6 +60,7 @@ export function compileKernelProgram(plan: ExecutionPlan): unknown {
                   : endpoint.constraint.interfaceRevisionId,
             },
             cardinality: endpoint.cardinality,
+            ...(endpoint.onDelete ? { onDelete: endpoint.onDelete } : {}),
           };
         });
         edges.push({ id: storage.id, owner: owner.id, a: endpoints[0], b: endpoints[1] });
@@ -97,7 +93,8 @@ export function compileKernelProgram(plan: ExecutionPlan): unknown {
     const binding = operation.binding;
     let target: unknown;
     let unsupported: string | null = null;
-    if (binding.kind === "state")
+    if (binding.kind === "lifecycle") target = { kind: "lifecycle", primitive: binding.primitive };
+    else if (binding.kind === "state")
       target = { kind: "state", owner: slotOwner(binding.slotId), slot: binding.slotId, primitive: binding.primitive };
     else if (binding.kind === "edge")
       target = {