fix: package memory-diag compiled runtime

tests/smoke/memory-diag-packaging.test.ts

@@ -0,0 +1,51 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { execFile } from "node:child_process";
+import { mkdir, mkdtemp, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { promisify } from "node:util";
+
+const execFileAsync = promisify(execFile);
+const repoRoot = join(dirname(fileURLToPath(import.meta.url)), "../..");
+const maxBuffer = 10 * 1024 * 1024;
+
+function executable(name: "npm" | "npx"): string {
+  return process.platform === "win32" ? `${name}.cmd` : name;
+}
+
+test("packed memory-diag bin runs from a temp consumer project", async () => {
+  const tempRoot = await mkdtemp(join(tmpdir(), "opencode-memory-diag-packaging-"));
+  const packDir = join(tempRoot, "pack");
+  const consumerDir = join(tempRoot, "consumer");
+
+  try {
+    await mkdir(packDir, { recursive: true });
+    await mkdir(consumerDir, { recursive: true });
+
+    const packResult = await execFileAsync(executable("npm"), [
+      "pack",
+      repoRoot,
+      "--pack-destination",
+      packDir,
+      "--silent",
+    ], { cwd: tempRoot, maxBuffer });
+    const tarballName = packResult.stdout.trim().split(/\r?\n/).filter(Boolean).at(-1);
+    assert.ok(tarballName, `npm pack did not report a tarball name. stdout:\n${packResult.stdout}\nstderr:\n${packResult.stderr}`);
+
+    const tarballPath = join(packDir, tarballName);
+    const runResult = await execFileAsync(executable("npx"), [
+      "--yes",
+      "--package",
+      tarballPath,
+      "memory-diag",
+      "--help",
+    ], { cwd: consumerDir, maxBuffer });
+
+    assert.match(runResult.stdout, /Usage:/);
+    assert.match(runResult.stdout, /memory-diag \[status\]/);
+  } finally {
+    await rm(tempRoot, { recursive: true, force: true });
+  }
+});