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/init.ts

@@ -11,8 +11,9 @@ import type { Args } from './lib/args';
 import { type AppProfile, PROFILES } from './lib/config';
 import { log } from './lib/log';
 import { TEMPLATE_TEXT } from './lib/template-files';
+import * as rt from './lib/rt';
 
-const T = join(import.meta.dir, '..', 'templates');
+const T = join(rt.packageRoot(), 'templates');
 export const FILES: [string, string][] = [
   ['storebound.config.ts', 'storebound.config.ts'],
   ['listing.md', 'store/listing.md'],