fix: add CJS bundle entry for Node 24 / CommonJS Gateway hosts

[seraphjiang]

Problem

On Node.js 24 with a CommonJS Gateway host, the plugin silently fails to load.

Root cause chain:

1. OpenClaw's plugin loader calls require() on dist/index.js first (synchronous native load).
2. dist/index.js is ESM ("type": "module"), so require() throws ERR_REQUIRE_ESM.
3. The loader falls back to jiti (source-transform mode) to handle ESM files.
4. jiti 2.7.0 crashes on Node.js 24 with:

   Cannot read properties of undefined (reading 'createRequire')
   

5. The plugin is marked as failed; no channel is registered; no error surfaced to the user.

Fix

Add a pre-built CJS bundle (dist-cjs/index.cjs) generated with esbuild:

• openclaw, @openclaw, zod, and qrcode-terminal are marked --external so the bundle stays small (~174 KB) and uses the host's copies at runtime.
• import.meta.url is shimmed with require('url').pathToFileURL(__filename).href so the one internal usage (src/api/api.ts) resolves correctly.
• dist-cjs/index.cjs is added as the first entry in openclaw.runtimeExtensions. OpenClaw picks the first file that loads successfully; on CommonJS hosts require('./dist-cjs/index.cjs') succeeds natively — no jiti involved. On ESM hosts the existing dist/index.js entry is used as before.

Changes

File	Change
package.json	Add dist-cjs/ to files; prepend ./dist-cjs/index.cjs to runtimeExtensions; add build:cjs script; add esbuild devDependency
dist-cjs/index.cjs	New esbuild CJS bundle (committed for zero-install convenience)

Testing

Verify require() loads cleanly

cd openclaw-weixin
node -e "
  const m = require('./dist-cjs/index.cjs');
  const def = m.default || m;
  console.assert(def.id === 'openclaw-weixin');
  console.assert(typeof def.register === 'function');
  console.log('OK:', def.id, def.name);
"

Expected output:

OK: openclaw-weixin Weixin

Rebuild and re-verify

npm run build
node -e "const m = require('./dist-cjs/index.cjs'); console.log((m.default||m).id)"

End-to-end (Node 24 Gateway)

1. Install the patched package into an OpenClaw Gateway running Node.js ≥ 24.
2. Enable the openclaw-weixin channel in config.
3. Confirm the channel appears in openclaw gateway status with status: active (no ERR_REQUIRE_ESM or jiti crash in logs).

Notes

• This is a pure additive change: existing ESM hosts are unaffected.
• The dist-cjs/ output is committed so consumers don't need a build step after npm install.
• Once OpenClaw ships a jiti version compatible with Node 24, or exposes a native async-import path for plugins, this shim can be removed.