Add repeatable verification and establish fresh save checkpoint

Consolidate current readiness and existing rule decisions, preserve selective
subagents and automatic verified Git pushes, and record the efficiency pilot.
Add source-bound compact checks, private saved-game snapshots/online backups,
and bounded HTTP seat-restoration checks with 15 meaningful regressions.

At the user's explicit request, archive and clear 3,644 old local rooms and
related records while retaining schema/migrations; preserve future games from
a fresh empty baseline. Private backups and credentials are outside Git.

Validation: npm run check passes types, lint and all 4,177 offline tests.
Full report: 20260913-efficiency-check-3, 130.147 seconds; source fingerprint
344ce1d44475b0cd4ff10a915f28331cb4e2fcacbc7595636fbaa645c0568f64.
Two earlier broad attempts stopped at new type/lint errors before tests;
both were fixed. Independent review found cancellation falsely passing;
SIGINT/SIGTERM regressions and review confirm the fix. Documentation links,
example test selection, private backup integrity and empty baseline verified.
No app/build/dependency/HTTP implementation changed; no production build,
HTTP suite, browser acceptance or AI calibration claimed for this checkpoint.
The full game goal and existing release gates remain unfinished.

tools/restore-seats.ts

@@ -0,0 +1,30 @@
+import { fileURLToPath } from 'node:url';
+import { parseArgs } from 'node:util';
+import {
+  checkSeatRestoration,
+  loadRestorationConfig,
+} from './seat-restoration';
+
+async function main() {
+  const { values } = parseArgs({
+    options: { config: { type: 'string' }, help: { type: 'boolean' } },
+  });
+  if (values.help) {
+    console.log(
+      'Usage: node --import tsx tools/restore-seats.ts --config /private/qa-seats.json\nRequires a private manifest outside the checkout and isolated, stable human QA rooms on a loopback server. GET can resume automatic game work. This checks HTTP restoration, not browser rendering.',
+    );
+    return;
+  }
+  if (!values.config) throw new Error();
+  const config = loadRestorationConfig(
+    values.config,
+    fileURLToPath(new URL('../', import.meta.url)),
+  );
+  console.log(JSON.stringify(await checkSeatRestoration(config)));
+}
+main().catch(() => {
+  console.error(
+    'Private-seat restoration failed. Check the private manifest, stable QA versions and local server; see --help.',
+  );
+  process.exitCode = 1;
+});