Support captured CRDT changes in compound transaction contracts

test/crdt-edit-contracts.test.ts

@@ -53,16 +53,16 @@ test("edit cannot target a register, mismatched profile, or ordinary replacement
     );
   }
 });
-test("authored prepared change transport values fail explicitly until their runtime is implemented", () => {
+test("authored prepared changes retain their materialized type as transport values", () => {
   const result = compileCapabilityResourceSource(
     'package P id "p" revision "p@1" { function applyChange id "apply" : change<string> -> unit; }',
     { source },
   );
-  assert.equal(result.ok, false);
-  assert.ok(
-    result.diagnostics.some((d) => d.code === "unsupported-prepared-change"),
-    JSON.stringify(result.diagnostics),
-  );
+  assert.ok(result.ok && result.resource.kind === "package", JSON.stringify(result.diagnostics));
+  assert.deepEqual(result.resource.revision.exports[0]!.inputType, {
+    kind: "change",
+    value: { kind: "scalar", name: "string" },
+  });
 });
 
 test("generic edit retains its materialized type through specialization", () => {