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/apple/submission.ts

@@ -7,6 +7,7 @@ import { createOnce, findOrCreate } from '../lib/upsert';
 import { EMPTY_DRAFT, resolveHint, type ResolveScope, toResolve } from '../lib/review-submit';
 import type { Asc, J } from './asc';
 import { one } from './jsonapi';
+import * as rt from '../lib/rt';
 
 /** The draft review submission of the app (READY_FOR_REVIEW, iOS), or null. */
 export async function findDraft(c: Asc, appId: string): Promise<string | null> {
@@ -139,7 +140,7 @@ export const submitTiming = {
   delaysMs: [15_000, 30_000, 60_000, 120_000],
   timeoutMs: 10 * 60_000,
   heartbeatMs: 30_000,
-  sleep: (ms: number): Promise<void> => (ms > 0 ? Bun.sleep(ms) : Promise.resolve()),
+  sleep: (ms: number): Promise<void> => (ms > 0 ? rt.sleep(ms) : Promise.resolve()),
   now: (): number => Date.now(),
 };