Reuse verified immutable plans and streamline cooperative hashing

Continue final hosted development reliability qualification.

src/execution-world/kernel.ts

@@ -1,3 +1,4 @@
+import { executionPlanDigest, type ExecutionPlan, ExecutionPlanError, hexDigest } from "./plan.js";
 import { portableReflectionType, portableReflectionValue } from "./reflection.js";
 import type {
   ValueType,
@@ -7,7 +8,7 @@ import type {
   BoundDependency,
   PackageExport,
 } from "../capability-model/types.js";
-import { type ExecutionPlan, ExecutionPlanError, hexDigest } from "./plan.js";
+
 import { portableValueSchema } from "../bindings/portable.js";
 import { subscriptionContract } from "../capability-model/journals.js";
 type PreparedStep = string | null | { case: string; id: string };
@@ -25,7 +26,7 @@ function preparedInputPaths(type: ValueType, path: PreparedStep[] = []): Prepare
 }
 /** Small data-only interpreter input; no compiler, parser, Node module or SQL dependency reaches the browser. */
 export function compileKernelProgram(plan: ExecutionPlan): unknown {
-  if (hexDigest(plan.definition) !== plan.digest)
+  if (executionPlanDigest(plan) !== plan.digest)
     throw new ExecutionPlanError("INVALID_PLAN", "kernel", "Plan digest mismatch");
   const workspace = plan.definition.workspace;
   if (workspace.sharedAttachments.some((attachment) => attachment.kind !== "edge"))