Vendor OpenClaw source as Adolf fork baseline

Adolf is a fork/vendored clone of github.com/openclaw/openclaw (v2026.6.11),
free to diverge. Tree copied sans upstream .git; upstream remote added for
future syncs. Node pinned to 24 (.nvmrc); engines already require >=22.19.
Preserves docs/ARCHITECTURE.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LeqyaxJF2nbRXJtae2kNB2

packages/acp-core/src/error-format.test.ts

@@ -0,0 +1,36 @@
+// Error-format helper tests cover the non-Error cause stringifier contract.
+import { describe, expect, it } from "vitest";
+import {
+  configureAcpErrorRedactor,
+  redactSensitiveText,
+  stringifyNonErrorCause,
+} from "./error-format.js";
+
+describe("stringifyNonErrorCause", () => {
+  it("returns a string for values JSON.stringify serializes to undefined", () => {
+    // JSON.stringify(fn|symbol|undefined) is undefined; the `string`-typed helper must not leak it.
+    expect(stringifyNonErrorCause(() => {})).toBe("[object Function]");
+    expect(stringifyNonErrorCause(Symbol("x"))).toBe("[object Symbol]");
+    expect(stringifyNonErrorCause(undefined)).toBe("[object Undefined]");
+  });
+
+  it("stringifies ordinary scalar and object causes", () => {
+    expect(stringifyNonErrorCause({ a: 1 })).toBe('{"a":1}');
+    expect(stringifyNonErrorCause("hi")).toBe("hi");
+    expect(stringifyNonErrorCause(42)).toBe("42");
+    expect(stringifyNonErrorCause(null)).toBe("null");
+  });
+});
+
+describe("redactSensitiveText", () => {
+  it("applies fallback secret redaction after a configured redactor", () => {
+    configureAcpErrorRedactor((value) => value.replace("prefix", "host-redacted"));
+    try {
+      expect(redactSensitiveText("prefix ghp_123456789012345678901234")).toBe(
+        "host-redacted [REDACTED]",
+      );
+    } finally {
+      configureAcpErrorRedactor(undefined);
+    }
+  });
+});