feat(ql3): establish 3.0 incubation baseline

back/runtime/domain/runDispatchPlan.ts

@@ -0,0 +1,23 @@
+import type { ExecutionSpec } from './execution';
+import { cloneExecutionSpec } from './executionSpec';
+import type { RunDispatchCandidate } from './runDispatchCandidate';
+
+/** Normalizes a trusted plan and binds it to one persisted candidate identity. */
+export function executionSpecForRunDispatchCandidate(
+  candidate: RunDispatchCandidate,
+  value: ExecutionSpec,
+): ExecutionSpec {
+  const executionSpec = cloneExecutionSpec(value);
+  if (
+    executionSpec.runId !== candidate.runId ||
+    executionSpec.attemptId !== candidate.attemptId ||
+    executionSpec.projectId !== candidate.projectId ||
+    executionSpec.taskId !== candidate.taskId ||
+    executionSpec.taskRevision !== candidate.taskRevision
+  ) {
+    throw new TypeError(
+      'ExecutionSpec identity does not match its dispatch candidate',
+    );
+  }
+  return executionSpec;
+}