fixing Trace Bullet

infrastructure/gateway/src/main/resources/application.yml

@@ -250,13 +250,14 @@ management:
       enabled: true
     java:
       enabled: true
-  # Tracing-Konfiguration - Zipkin deaktiviert da kein Service verfügbar
+  # Tracing-Konfiguration - Aktiviert (Micrometer Tracing + Zipkin)
   tracing:
+    enabled: true
     sampling:
-      probability: 0.0  # Deaktiviert Tracing komplett
+      probability: ${TRACING_SAMPLING_PROBABILITY:1.0}
   zipkin:
     tracing:
-      endpoint: ""  # Leer um Zipkin zu deaktivieren
+      endpoint: ${ZIPKIN_TRACING_ENDPOINT:http://zipkin:9411/api/v2/spans}
 
 # Erweiterte Logging-Konfiguration
 logging:

infrastructure/gateway/src/main/resources/logback-spring.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <property name="LOG_PATTERN" value="%d{ISO8601} %-5level [%X{traceId:-}:%X{spanId:-}] %logger{36} - %msg%n"/>
+
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>${LOG_PATTERN}</pattern>
+        </encoder>
+    </appender>
+
+    <logger name="org.springframework" level="INFO"/>
+    <logger name="org.springframework.web" level="INFO"/>
+    <logger name="org.springframework.boot.actuate" level="INFO"/>
+    <logger name="reactor.netty" level="WARN"/>
+
+    <root level="INFO">
+        <appender-ref ref="CONSOLE"/>
+    </root>
+</configuration>