Preserve nested CRDT recovery and serialize compound editor submissions

src/execution-world/kernel.ts

@@ -8,6 +8,14 @@ import type {
 } from "../capability-model/types.js";
 import { type ExecutionPlan, ExecutionPlanError, hexDigest } from "./plan.js";
 import { portableValueSchema } from "../bindings/portable.js";
+function preparedInputPaths(type: ValueType, path: (string | null)[] = []): (string | null)[][] {
+  if (type.kind === "change") return [path];
+  if (type.kind === "optional") return preparedInputPaths(type.value, path);
+  if (type.kind === "list") return preparedInputPaths(type.value, [...path, null]);
+  if (type.kind === "record")
+    return Object.entries(type.fields).flatMap(([key, value]) => preparedInputPaths(value, [...path, key]));
+  return [];
+}
 /** 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)
@@ -172,6 +180,7 @@ export function compileKernelProgram(plan: ExecutionPlan): unknown {
           : {}),
       };
     }
+    const inputChanges = preparedInputPaths(operation.input);
     const input = schema(operation.input),
       output = schema(operation.output);
     return {
@@ -183,6 +192,7 @@ export function compileKernelProgram(plan: ExecutionPlan): unknown {
       effect: operation.execution.kind,
       targets: operation.execution.kind === "remote" ? [] : operation.execution.targets,
       input,
+      ...(inputChanges.length ? { inputChanges } : {}),
       output,
       unsupported: unsupported ?? (input && output ? null : "UNSUPPORTED_OPERATION_CODEC"),
       binding: target,