[RFC / Feature Proposal] Relaxing Strict PHP Upper-Bound Enforcement into Configurable Soft Warnings for Emergency Security Mitigations (e.g., `php2shell`)

Detect unintentional multiple `*.config.php` files to catch weird config problems

Automatically make a backup of the `config.php` file

Export Bluesky, Fediverse, and IMPP to system contacts

Provide hint when multiple config files are in-use