refactor(di, cache): improve cyclic dependency handling and enhance error logging

- Refactor `CyclicDependencyException` to streamline cycle extraction logic and variable assignments.
- Improve error message formatting with clearer structure and actionable tips.
- Add detailed stack trace logging in `CacheInitializer` when Redis fails, for better debugging.

src/Framework/Cache/CacheInitializer.php

@@ -66,7 +66,10 @@ final readonly class CacheInitializer
             $redisCache = new GeneralCache(new RedisCache($redisConnection), $serializer, $compression);
         } catch (\Throwable $e) {
             // Fallback to file cache if Redis is not available
-            error_log("Redis not available, falling back to file cache: " . $e->getMessage());
+
+            error_log('Redis not available, falling back to file cache: ' . $e->getMessage());
+            error_log(print_r($e->getTrace(), true));
+
             $redisCache = new GeneralCache(new FileCache(), $serializer, $compression);
         }
 

src/Framework/DI/Exceptions/CyclicDependencyException.php

@@ -19,18 +19,21 @@ final class CyclicDependencyException extends ContainerException
     ) {
         // Finde wo der Zyklus beginnt (erste Wiederholung in der Kette)
         $cycleStartIndex = array_search($class, $dependencyChain, true);
-        
+
         if ($cycleStartIndex !== false) {
             // Extrahiere nur den Zyklus-Teil
-            $this->cycle = array_slice($dependencyChain, $cycleStartIndex);
+            $cycle = array_slice($dependencyChain, $cycleStartIndex);
-            $this->cycle[] = $class; // Schließe den Zyklus
+            $cycle[] = $class; // Schließe den Zyklus
-            $this->cycleStart = $dependencyChain[$cycleStartIndex];
+            $cycleStart = $dependencyChain[$cycleStartIndex];
         } else {
             // Fallback: Verwende die gesamte Kette
-            $this->cycle = array_merge($dependencyChain, [$class]);
+            $cycle = array_merge($dependencyChain, [$class]);
-            $this->cycleStart = $dependencyChain[0] ?? $class;
+            $cycleStart = $dependencyChain[0] ?? $class;
         }
 
+        $this->cycle = $cycle;
+        $this->cycleStart = $cycleStart;
+
         $context = ExceptionContext::forOperation('dependency_resolution', 'DI')
             ->withData([
                 'dependencyChain' => $dependencyChain,
@@ -53,19 +56,19 @@ final class CyclicDependencyException extends ContainerException
     private function buildMessage(): string
     {
         $cycleStr = implode(' → ', $this->cycle);
-        
+
         $message = "🔄 Zyklische Abhängigkeit entdeckt:\n\n";
         $message .= "   {$cycleStr}\n";
         $message .= "   ↑─────────────────────┘\n";
         $message .= "   Der Zyklus beginnt hier bei '{$this->cycleStart}'\n\n";
-        
+
         // Füge hilfreiche Hinweise hinzu
         $message .= "💡 Lösungsvorschläge:\n";
         $message .= "   • Verwende Lazy Loading für eine der Abhängigkeiten\n";
         $message .= "   • Füge eine Factory zwischen die Klassen ein\n";
         $message .= "   • Refactoriere die Abhängigkeitsstruktur (Dependency Inversion)\n";
         $message .= "   • Verwende Event-basierte Kommunikation statt direkter Abhängigkeit\n";
-        
+
         return $message;
     }