Initial import: open-design source for helix-mind.ai distribution

This repository contains the open-design daemon CLI source code, built
and packaged at https://helix-mind.ai/cli/open-design/latest.tgz for use
by the HelixMind /design slash command.

Licenses: Apache-2.0 (root) + MIT (skills/*)

apps/daemon/tests/setup.ts

@@ -0,0 +1,22 @@
+import { mkdtempSync, rmSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import path from 'node:path';
+
+const TEST_DATA_DIR_SYMBOL = Symbol.for('open-design.daemon.vitestDataDir');
+
+const globalState = globalThis as typeof globalThis & {
+  [TEST_DATA_DIR_SYMBOL]?: string;
+};
+
+if (!globalState[TEST_DATA_DIR_SYMBOL]) {
+  globalState[TEST_DATA_DIR_SYMBOL] = mkdtempSync(path.join(tmpdir(), 'od-daemon-vitest-'));
+
+  process.once('exit', () => {
+    rmSync(globalState[TEST_DATA_DIR_SYMBOL]!, { force: true, recursive: true });
+  });
+}
+
+// Server paths are resolved at module import time. Force every daemon test
+// process to use one isolated data directory before any test imports server.ts,
+// so tests can never read or overwrite the developer's real repo `.od` data.
+process.env.OD_DATA_DIR = globalState[TEST_DATA_DIR_SYMBOL];