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/config/ConfigOptionMapping-example.php

@@ -1,7 +1,7 @@
 <?php
 
-if (!defined("WHMCS")) {
-    die("This file cannot be accessed directly");
+if (! defined('WHMCS')) {
+    exit('This file cannot be accessed directly');
 }
 
 return [
@@ -16,4 +16,4 @@ return [
     'cpuCores' => 'CPU Cores',
     'networkProfile' => 'Network Type',
     'storageProfile' => 'Storage Type',
-];
+];