feat: add admin dashboard with usage stats

Co-authored-by: Cursor <cursoragent@cursor.com>

server/src/adminConfig.ts

@@ -0,0 +1,25 @@
+const ADMIN_ENV_KEY = 'ADMIN_USER_IDS'
+
+export function getAdminUserIds(): Set<string> {
+  const raw = process.env[ADMIN_ENV_KEY]
+  if (!raw) {
+    return new Set()
+  }
+
+  const ids = raw
+    .split(',')
+    .map((id) => id.trim())
+    .filter((id) => id.length > 0)
+
+  if (ids.length === 0) {
+    return new Set()
+  }
+
+  return new Set(ids)
+}
+
+export function isAdminUserId(userId: string): boolean {
+  const adminIds = getAdminUserIds()
+  return adminIds.has(userId)
+}
+