Include canonical hashing in restricted package execution

restricted-execution/default.nix

@@ -37,7 +37,7 @@ let
     mkdir -p "$out"
     cat > entry.mjs <<'JS'
     export {definePortableRegistry,QxReject} from '${core}/dist/portable.js';
-    export {encodeArgument,decodeArgument,canonicalJson,parseJson} from '${core}/dist/value.js';
+    export {encodeArgument,decodeArgument,canonicalJson,parseJson,hashJson} from '${core}/dist/value.js';
     export {workspaceId,operationId,objectId,entryId,hashIdentity} from '${core}/dist/identity.js';
     export {reference} from '${core}/dist/references.js';
     export {CodecError,ExecutionError} from '${core}/dist/limits.js';

restricted-execution/service.test.mjs

@@ -307,6 +307,47 @@ test("the checked portable SDK keeps codecs and nested graph ports inside the fr
     await f.close();
   }
 });
+test("checked handlers hash canonical values without ambient capabilities", async () => {
+  const sdk = process.env.QUIXOS_TEST_SDK;
+  const C = await import(sdk);
+  const workspace = C.workspaceId("workspace:restricted");
+  const text = { kind: "scalar", name: "string" };
+  const value = {
+    kind: "record",
+    fields: {
+      text,
+      options: {
+        kind: "record",
+        fields: {
+          level: { kind: "scalar", name: "int32" },
+          enabled: { kind: "scalar", name: "bool" },
+        },
+      },
+    },
+  };
+  const declarations = [
+    { id: "test", name: "test", effect: "snapshot", receiver: null, input: value, output: text, methods: [] },
+  ];
+  const source = `import {definePortableRegistry,hashJson} from 'qx:core'; export const registry=definePortableRegistry(${JSON.stringify(declarations)},{test:ctx=>hashJson('test-content',ctx.input)});`;
+  const f = await fixture(source, { sdk: [{ name: "qx:core", path: sdk }] });
+  try {
+    const input = { text: "雨后的书店", options: { level: 3, enabled: true } };
+    let expected;
+    for (const candidate of [input, { options: input.options, text: input.text }, { ...input, text: "別の文" }]) {
+      f.start(C.encodeArgument(value, candidate, { workspace }));
+      const result = await f.receive();
+      assert.equal(result.status, "returned");
+      const actual = C.decodeArgument(text, result.output, { workspace });
+      assert.equal(actual, await C.hashJson("test-content", candidate));
+      if (candidate.text === input.text) {
+        expected ??= actual;
+        assert.equal(actual, expected, "Object key order must not invalidate content caches");
+      } else assert.notEqual(actual, expected, "Content changes must invalidate the key");
+    }
+  } finally {
+    await f.close();
+  }
+});
 test("ambient clock, entropy, network and native imports are denied", async () => {
   for (const code of [
     "Date.now()",