feat: validate HTTP envelopes and payload schemas

tests/runtime-schema/http-schema.test.js

@@ -0,0 +1,53 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  validateEnvelope,
+  validateOperationPayload,
+  validateOperationRequest,
+} from "../../src/adapters/http/schema-registry.js";
+
+describe("HTTP runtime schema boundary", () => {
+  it("rejects an invalid top-level envelope", () => {
+    expect(validateEnvelope({ success: true }).success).toBe(false);
+  });
+
+  it("rejects an invalid operation payload with safe issue metadata", () => {
+    const result = validateOperationPayload("SampleResourceListPayload", [
+      { id: "resource-1", name: 42 },
+    ]);
+
+    expect(result).toMatchObject({
+      success: false,
+      issues: [{ path: "0.name" }],
+    });
+    expect(JSON.stringify(result)).not.toContain("resource-1");
+  });
+
+  it("returns a deep-cloned additive-tolerant payload", () => {
+    const source = [{ id: "resource-1", name: "Example", additive: "accepted" }];
+    const result = validateOperationPayload("SampleResourceListPayload", source);
+
+    expect(result).toMatchObject({
+      success: true,
+      data: [{ id: "resource-1", additive: "accepted" }],
+    });
+    expect(result.data).not.toBe(source);
+  });
+
+  it("validates outbound commands before transport", () => {
+    expect(
+      validateOperationRequest("CreateSampleResourceCommand", { name: "" }).success,
+    ).toBe(false);
+    expect(
+      validateOperationRequest("CreateSampleResourceCommand", { name: "Example" })
+        .success,
+    ).toBe(true);
+  });
+
+  it("fails closed for an unregistered schema", () => {
+    expect(validateOperationPayload("UnknownPayload", {})).toMatchObject({
+      success: false,
+      issues: [{ code: "SCHEMA_NOT_REGISTERED" }],
+    });
+  });
+});