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

tests/debug/test-cache-hit.php

@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+require_once __DIR__ . '/../../vendor/autoload.php';
+
+use App\Framework\Cache\CacheInitializer;
+use App\Framework\Core\PathProvider;
+use App\Framework\DateTime\SystemClock;
+use App\Framework\DateTime\SystemHighResolutionClock;
+use App\Framework\DI\DefaultContainer;
+use App\Framework\Discovery\Cache\DiscoveryCacheIdentifiers;
+use App\Framework\Performance\EnhancedPerformanceCollector;
+use App\Framework\Performance\MemoryMonitor;
+
+echo "=== Testing Cache Hit Detection ===\n\n";
+
+$basePath = dirname(__DIR__, 2);
+$pathProvider = new PathProvider($basePath);
+$clock = new SystemClock();
+
+// Create cache
+$highResClock = new SystemHighResolutionClock();
+$memoryMonitor = new MemoryMonitor();
+$performanceCollector = new EnhancedPerformanceCollector($clock, $highResClock, $memoryMonitor, false);
+$container = new DefaultContainer();
+$cacheInitializer = new CacheInitializer($performanceCollector, $container);
+$cache = $cacheInitializer();
+
+// Generate the exact cache key using the new CacheIdentifier system
+$defaultPaths = [$pathProvider->getSourcePath()];
+$cacheKey = DiscoveryCacheIdentifiers::fullDiscoveryKey($defaultPaths);
+
+echo "Checking cache key: {$cacheKey->toString()}\n";
+echo "Source path: {$pathProvider->getSourcePath()}\n";
+
+// Check cache
+$cachedItem = $cache->get($cacheKey);
+
+if ($cachedItem !== null) {
+    echo "✅ CACHE HIT! Registry found in cache.\n";
+    if ($cachedItem->value !== null) {
+        echo "Registry type: " . get_class($cachedItem->value) . "\n";
+    } else {
+        echo "⚠️ Registry value is null - deserialization issue?\n";
+    }
+
+    if ($cachedItem->value instanceof \App\Framework\Discovery\Results\DiscoveryRegistry) {
+        $registry = $cachedItem->value;
+        echo "Routes count: " . $registry->routes->count() . "\n";
+        echo "Attributes count: " . count($registry->attributes->getAllTypes()) . "\n";
+        echo "Interfaces count: " . $registry->interfaces->count() . "\n";
+        echo "Templates count: " . $registry->templates->count() . "\n";
+    }
+} else {
+    echo "❌ CACHE MISS! No registry found in cache.\n";
+}
+
+echo "\nDone.\n";