Enable Discovery debug logging for production troubleshooting

- Add DISCOVERY_LOG_LEVEL=debug
- Add DISCOVERY_SHOW_PROGRESS=true
- Temporary changes for debugging InitializerProcessor fixes on production

test_modern_syntax_highlighter.php

@@ -0,0 +1,72 @@
+<?php
+
+require_once __DIR__ . '/vendor/autoload.php';
+
+use App\Framework\SyntaxHighlighter\SyntaxHighlighter;
+
+// Test code to highlight
+$phpCode = <<<'PHP'
+<?php
+
+declare(strict_types=1);
+
+namespace App\Example;
+
+use App\Framework\Http\JsonResult;
+
+#[Route(path: '/api/users', method: 'GET')]
+final readonly class UserController
+{
+    /**
+     * Get all users
+     * 
+     * @param UserRepository $repository
+     * @return JsonResult<array<User>>
+     */
+    public function getUsers(UserRepository $repository): JsonResult
+    {
+        $users = $repository->findAll();
+        $count = count($users);
+        
+        return new JsonResult([
+            'users' => $users,
+            'count' => $count,
+            'message' => "Found {$count} users"
+        ]);
+    }
+}
+PHP;
+
+$highlighter = new SyntaxHighlighter();
+
+// Test HTML output
+echo "=== HTML Output ===\n";
+$html = $highlighter->highlightWithCss($phpCode, [
+    'theme' => 'dark',
+    'lineNumbers' => true
+]);
+echo $html . "\n\n";
+
+// Test console output
+echo "=== Console Output ===\n";
+$console = $highlighter->highlight($phpCode, 'console', [
+    'colorize' => true,
+    'lineNumbers' => true
+]);
+echo $console . "\n";
+
+// Test tokenization
+echo "=== Tokenization Test ===\n";
+$tokens = $highlighter->tokenize($phpCode);
+echo "Total tokens: " . $tokens->count() . "\n";
+
+// Show first few tokens
+$first5 = $tokens->slice(0, 5);
+foreach ($first5 as $token) {
+    echo sprintf(
+        "Line %d: %s = '%s'\n", 
+        $token->line, 
+        $token->type->value, 
+        trim($token->value)
+    );
+}