feat: group analytics

* wip

* wip

* wip

* wip

* wip

* add buffer

* wip

* wip

* fixes

* fix

* wip

* group validation

* fix group issues

* docs: add groups

apps/testbed/scripts/copy-op1.mjs

@@ -0,0 +1,16 @@
+import { copyFileSync, mkdirSync } from 'node:fs';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const src = join(__dirname, '../../public/public/op1.js');
+const dest = join(__dirname, '../public/op1.js');
+
+mkdirSync(join(__dirname, '../public'), { recursive: true });
+
+try {
+  copyFileSync(src, dest);
+  console.log('✓ Copied op1.js to public/');
+} catch (e) {
+  console.warn('⚠ Could not copy op1.js:', e.message);
+}