- Add execute_mysql_command() helper in install.py for robust auth fallback
- Update mysqlUtilities.py with socket auth fallback for all operations:
* Database creation
* User creation
* Privilege granting
* Privilege flushing
- Fix PowerDNS database setup to use new authentication helper
- Improve cyberpanel user connection verification
- Add proper error handling and logging throughout
This ensures the installation works correctly when MariaDB is pre-installed
with socket authentication (common with dependency installations).
Fixes the 'Cannot update settings with empty passwords' installation failure.
236ecd7ea8