docs(README): clarify PHP version requirements and installation instructions

- Updated PHP version requirements to specify that PHP 8.2+ is required for development dependencies.
- Enhanced installation instructions to differentiate between production and development setups, including commands for Composer installation.
- Added a note regarding the necessity of PHP 8.2+ for running tests, improving clarity for developers.

These changes aim to provide clearer guidance for users setting up their development environments.

README.md

@@ -57,7 +57,7 @@ and go from there. The documentation will be translated to English in the near f
 
 * Apache / nginx ([example config](install/nginx.conf)) / caddy ([example config](install/Caddyfile))
 * MySQL 5.5.3 or above (including MySQL 8.0+) / MariaDB 10.0 or above / Percona
-* PHP: 8.1 / 8.2 / 8.3 / 8.4
+* PHP: 8.1 / 8.2 / 8.3 / 8.4 (8.2+ required for development dependencies)
 * PHP Extensions: mbstring, gd, bcmath, intl, tidy (optional), xml, xmlwriter
 * Crontab (Recommended)
 
@@ -98,6 +98,10 @@ Check out our [autoinstall](https://github.com/torrentpier/autoinstall) reposito
 3. [Check our system requirements](#-requirements)
 4. After, run this command in the project directory to install Composer dependencies
    ```shell
+   # For production (PHP 8.1+)
+   composer install --no-dev
+
+   # For development (PHP 8.2+ required)
    composer install
    ```
 5. Edit database configuration settings in the environment (`.env.example`), after, rename to `.env`
@@ -132,6 +136,9 @@ If you discover a security vulnerability within TorrentPier, please follow our [
 
 TorrentPier includes a comprehensive testing suite built with **Pest PHP**. Run tests to ensure code quality and system reliability:
 
+> [!NOTE]
+> Testing requires **PHP 8.2+** and development dependencies. Install with `composer install` (without `--no-dev` flag).
+
 ```shell
 # Run all tests
 ./vendor/bin/pest