70e6d59c63
- Replaced PowerShell scripts with PHP scripts for checking prerequisites and preparing the environment. - Added new PHP scripts: `check-prerequisites.php`, `prepare-saas-env.php`, `install-saas.php`, `build-migration-bundle.php`, and `run-sql-migrations.php`. - Updated README and installation documentation to reflect the new PHP scripts and installation steps. - Created a generated SQL migration bundle file structure and added SQL migration scripts. - Enhanced the public index page with navigation and installation steps. - Removed obsolete PowerShell scripts.