CLI runs on Node 20+: npx storebound (bunx keeps working)

- cli/lib/rt.ts: the runtime layer on node: modules (spawn / spawnSync with Bun's defaults, exit codes and
  "Executable not found", which with PATHEXT, sleep, serve, Glob, hasher, gunzip, stdin, SQLite, packageRoot,
  config imports with a type-stripping fallback for Node 20); every Bun.* use in cli/ goes through it
- tools/gen-embedded.ts -> cli/lib/embedded.ts: templates/, cli/shots/*.html and Play's Data safety form embedded
  (replaces Bun text imports; the bundle and the compiled sidecar carry them), checked fresh by bun run ci
- package.json: bin dist/storebound.mjs (Node ESM bundle, tools/build-node.ts, prepack), engines node >=20
- bun run ci: node bundle + node smoke (real node: --version, help, check same as Bun, scan, release plan --help,
  init, MCP handshake + tool call); Forgejo CI sets up Node 20; tests/node-compat.test.ts guards cli/
- install writes npx MCP commands when run with Node; bin/storebound falls back to Node
- docs: npx storebound init (Node 20+) or bunx storebound init

cli/play/google.ts

@@ -3,6 +3,7 @@
 import { playServiceAccount } from '../lib/credentials';
 import { tokenSource } from '../lib/google-auth';
 import { errorBody } from '../lib/http';
+import * as rt from '../lib/rt';
 
 export const REPORTING_API = 'https://playdeveloperreporting.googleapis.com/v1beta1';
 
@@ -12,7 +13,7 @@ export function googleClient(root: string, scope: string) {
     for (let attempt = 0; ; attempt++) {
       const r = await fetch(url, { method, headers: { Authorization: 'Bearer ' + (await token()), ...(body === undefined ? {} : { 'Content-Type': 'application/json' }) },
         body: body === undefined ? undefined : JSON.stringify(body) });
-      if ((r.status === 429 || r.status >= 500) && attempt < 4) { await r.body?.cancel(); await Bun.sleep(2000 * (attempt + 1)); continue; }
+      if ((r.status === 429 || r.status >= 500) && attempt < 4) { await r.body?.cancel(); await rt.sleep(2000 * (attempt + 1)); continue; }
       return r;
     }
   }