feat: auto-create custom fields, add try/catch coverage, PHPDoc, and Pint formatting

- Auto-create 'Initial Operating System' and 'Initial SSH Key' custom fields
  via Database::ensureCustomFields() on module load, eliminating the manual
  modify.sql step
- Delete modify.sql (no longer needed)
- Add try/catch blocks around every DB operation and API call across all PHP
  files per CLAUDE.md error handling rules
- Add comprehensive PHPDoc to all classes, methods, and properties
- Set up Laravel Pint (laravel/pint) with Laravel-style preset for consistent
  code formatting across the codebase
- Add git pre-commit hook (hooks/pre-commit) that runs Pint on staged PHP
  files, auto-installed via Composer post-install/post-update scripts
- Simplify README installation to a single copy-paste command

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

modules/servers/VirtFusionDirect/lib/ServerResource.php

@@ -2,8 +2,17 @@
 
 namespace WHMCS\Module\Server\VirtFusionDirect;
 
+/**
+ * Transforms a VirtFusion API server response into a flat key-value array for Smarty templates and admin display.
+ */
 class ServerResource
 {
+    /**
+     * Normalise a VirtFusion API server response into a flat associative array.
+     *
+     * @param  object  $data  VirtFusion API server response object (with a `data` property)
+     * @return array Flat associative array containing server name, hostname, resources, network info, and usage
+     */
     public function process($data)
     {
         $server = json_decode(json_encode($data->data), true);