Optimize gateway comms reload behavior and strengthen regression coverage (#496)

scripts/comms/baseline.mjs

@@ -0,0 +1,22 @@
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
+import path from 'node:path';
+import process from 'node:process';
+
+const ROOT = path.resolve(path.dirname(new URL(import.meta.url).pathname), '..', '..');
+const CURRENT_FILE = path.join(ROOT, 'artifacts/comms/current-metrics.json');
+const BASELINE_DIR = path.join(ROOT, 'scripts/comms/baseline');
+const BASELINE_FILE = path.join(BASELINE_DIR, 'metrics.baseline.json');
+
+async function main() {
+  const raw = await readFile(CURRENT_FILE, 'utf8');
+  const current = JSON.parse(raw);
+
+  await mkdir(BASELINE_DIR, { recursive: true });
+  await writeFile(BASELINE_FILE, JSON.stringify(current, null, 2));
+  console.log(`Updated comms baseline: ${BASELINE_FILE}`);
+}
+
+main().catch((error) => {
+  console.error('[comms:baseline] failed:', error);
+  process.exitCode = 1;
+});