refactor: reorganize project structure for better maintainability

- Move 45 debug/test files from root to organized scripts/ directories
- Secure public/ directory by removing debug files (security improvement)
- Create structured scripts organization:
  • scripts/debug/      (20 files) - Framework debugging tools
  • scripts/test/       (18 files) - Test and validation scripts
  • scripts/maintenance/ (5 files) - Maintenance utilities
  • scripts/dev/         (2 files) - Development tools

Security improvements:
- Removed all debug/test files from public/ directory
- Only production files remain: index.php, health.php

Root directory cleanup:
- Reduced from 47 to 2 PHP files in root
- Only essential production files: console.php, worker.php

This improves:
✅ Security (no debug code in public/)
✅ Organization (clear separation of concerns)
✅ Maintainability (easy to find and manage scripts)
✅ Professional structure (clean root directory)

scripts/debug/security-validation.php

@@ -0,0 +1,50 @@
+<?php
+// Security test endpoint for production deployment validation
+declare(strict_types=1);
+
+header('Content-Type: application/json');
+
+$tests = [
+    'environment' => [
+        'app_env' => $_ENV['APP_ENV'] ?? 'not-set',
+        'app_debug' => $_ENV['APP_DEBUG'] ?? 'not-set',
+        'status' => ($_ENV['APP_ENV'] ?? '') === 'production' && ($_ENV['APP_DEBUG'] ?? '') === 'false' ? 'PASS' : 'FAIL'
+    ],
+    'performance_debug' => [
+        'analytics_track_performance' => $_ENV['ANALYTICS_TRACK_PERFORMANCE'] ?? 'not-set',
+        'status' => (strpos($_ENV['ANALYTICS_TRACK_PERFORMANCE'] ?? '', 'false') !== false) ? 'PASS' : 'FAIL'
+    ],
+    'xdebug' => [
+        'xdebug_mode' => $_ENV['XDEBUG_MODE'] ?? 'not-set',
+        'status' => ($_ENV['XDEBUG_MODE'] ?? '') === 'off' ? 'PASS' : 'FAIL'
+    ],
+    'security_headers' => [
+        'https_only' => isset($_SERVER['HTTPS']) ? 'PASS' : 'FAIL',
+        'user_agent_required' => !empty($_SERVER['HTTP_USER_AGENT']) ? 'PASS' : 'FAIL'
+    ]
+];
+
+// Calculate overall status
+$overall_status = 'PASS';
+foreach ($tests as $category => $test) {
+    if (isset($test['status']) && $test['status'] === 'FAIL') {
+        $overall_status = 'FAIL';
+        break;
+    }
+    if (is_array($test)) {
+        foreach ($test as $key => $value) {
+            if ($key === 'status' || !is_string($value)) continue;
+            if ($value === 'FAIL') {
+                $overall_status = 'FAIL';
+                break 2;
+            }
+        }
+    }
+}
+
+echo json_encode([
+    'overall_status' => $overall_status,
+    'timestamp' => date('Y-m-d H:i:s'),
+    'tests' => $tests
+], JSON_PRETTY_PRINT);
+?>