Updates

scripts/build-client-bundle.cjs

@@ -0,0 +1,35 @@
+/**
+ * Bundle the PearData GUI (app.js + local modules) to CJS for Electron.
+ *
+ * CJS require() works with nodeIntegration. esbuild inlines local sources and
+ * leaves node_modules as external require()s resolved from electron/../node_modules.
+ */
+'use strict'
+
+const path = require('path')
+const { build } = require('esbuild')
+
+const root = path.resolve(__dirname, '..')
+const outfile = path.join(root, 'electron', 'app.bundle.cjs')
+
+async function main() {
+  await build({
+    entryPoints: [path.join(root, 'app.js')],
+    bundle: true,
+    platform: 'node',
+    format: 'cjs',
+    outfile,
+    packages: 'external',
+    sourcemap: true,
+    logLevel: 'info',
+    banner: {
+      js: '/* peardata electron GUI bundle — generated by scripts/build-client-bundle.cjs */\n',
+    },
+  })
+  console.log('[build-client-bundle] wrote', outfile)
+}
+
+main().catch((err) => {
+  console.error(err)
+  process.exit(1)
+})