Fix production environment variables

- Remove old Confluence variables
- Add NEXT_PUBLIC_API_URL for API access

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

scripts/generate-password-hash.js

@@ -0,0 +1,13 @@
+const bcrypt = require('bcryptjs');
+
+const password = process.argv[2];
+
+if (!password) {
+  console.error('Usage: node generate-password-hash.js <password>');
+  process.exit(1);
+}
+
+const hash = bcrypt.hashSync(password, 10);
+console.log('Password hash:', hash);
+console.log('\nAdd this to your terraform.tfvars:');
+console.log(`admin_password_hash = "${hash}"`);