fix check and log message

Author: tobias-lippert

.github/workflows/bean-instantiations-startup.yml

@@ -78,7 +78,7 @@ jobs:
       - name: Extract and validate startup bean instantiation metrics
         run: |
           # Configuration variables
-          STARTUP_LOG_PATTERN="Bean instantiation graph exported to startupBeans\.dot \(([0-9]+) edges, longest dependency chain: \[([^\]]*)\]\)"
+          STARTUP_LOG_PATTERN="Bean instantiation graph exported to startupBeans\.dot \(([0-9]+) edges, longest dependency chain length: \[([^\]]*)\]\)"
           MIN_INSTANTIATED_BEANS=20
           MAX_INSTANTIATED_BEANS=94
           MAX_STARTUP_DEPENDENCY_CHAIN_LENGTH=9

src/main/java/de/tum/cit/aet/artemis/core/config/BeanInstantiationTracer.java

@@ -97,7 +97,7 @@ public void printDependencyGraph() {
                 out.printf("  \"%s\" -> \"%s\";%n", edge.first(), edge.second());
             }
             out.println("}");
-            log.debug("Bean instantiation graph exported to startupBeans.dot ({} edges, longest dependency chain: {})", edges.size(), longestChain.get());
+            log.debug("Bean instantiation graph exported to startupBeans.dot ({} edges, longest dependency chain length: {})", edges.size(), longestChain.get().size());
         }
         catch (IOException e) {
             log.error("Failed to write startupBeans.dot", e);
@@ -110,7 +110,6 @@ public void printDependencyGraph() {
             log.debug("Startup long bean instantiation chain {} (length {}): {}", i++, reversed.size(), String.join(" → ", reversed));
         }
 
-        // Log the single longest chain
         List<String> longest = longestChain.get();
         if (!longest.isEmpty()) {
             List<String> forward = new ArrayList<>(longest);