diff --git a/pdf-umbenenner-application/src/main/java/de/gecheckt/pdf/umbenenner/application/usecase/DefaultBatchRunProcessingUseCase.java b/pdf-umbenenner-application/src/main/java/de/gecheckt/pdf/umbenenner/application/usecase/DefaultBatchRunProcessingUseCase.java
index d8b4d7c..f5814eb 100644
--- a/pdf-umbenenner-application/src/main/java/de/gecheckt/pdf/umbenenner/application/usecase/DefaultBatchRunProcessingUseCase.java
+++ b/pdf-umbenenner-application/src/main/java/de/gecheckt/pdf/umbenenner/application/usecase/DefaultBatchRunProcessingUseCase.java
@@ -262,17 +262,23 @@ public class DefaultBatchRunProcessingUseCase implements BatchRunProcessingUseCa
 
         // Log extraction outcome
         switch (extractionResult) {
-            case de.gecheckt.pdf.umbenenner.domain.model.PdfExtractionSuccess success ->
+            case de.gecheckt.pdf.umbenenner.domain.model.PdfExtractionSuccess success -> {
                 LOG.debug("PDF extraction successful for '{}'. Pages: {}, Text length: {} chars.",
                         candidate.uniqueIdentifier(),
                         success.pageCount().value(),
                         success.extractedText().length());
-            case de.gecheckt.pdf.umbenenner.domain.model.PdfExtractionContentError contentError ->
+            }
+            case de.gecheckt.pdf.umbenenner.domain.model.PdfExtractionContentError contentError -> {
                 LOG.debug("PDF content extraction failed for '{}' (content problem): {}",
                         candidate.uniqueIdentifier(), contentError.reason());
-            case de.gecheckt.pdf.umbenenner.domain.model.PdfExtractionTechnicalError technicalError ->
+            }
+            case de.gecheckt.pdf.umbenenner.domain.model.PdfExtractionTechnicalError technicalError -> {
                 LOG.debug("PDF extraction technical error for '{}': {}",
                         candidate.uniqueIdentifier(), technicalError.errorMessage());
+            }
+            default -> {
+                // Handle any other cases
+            }
         }
 
         DocumentProcessingOutcome outcome =
@@ -280,15 +286,21 @@ public class DefaultBatchRunProcessingUseCase implements BatchRunProcessingUseCa
 
         // Log M3 outcome
         switch (outcome) {
-            case de.gecheckt.pdf.umbenenner.domain.model.PreCheckPassed passed ->
+            case de.gecheckt.pdf.umbenenner.domain.model.PreCheckPassed passed -> {
                 LOG.info("Pre-checks PASSED for '{}'. Candidate ready for M4 persistence.",
                         candidate.uniqueIdentifier());
-            case de.gecheckt.pdf.umbenenner.domain.model.PreCheckFailed failed ->
+            }
+            case de.gecheckt.pdf.umbenenner.domain.model.PreCheckFailed failed -> {
                 LOG.info("Pre-checks FAILED for '{}': {} (Deterministic content error).",
                         candidate.uniqueIdentifier(), failed.failureReasonDescription());
-            case de.gecheckt.pdf.umbenenner.domain.model.TechnicalDocumentError technicalError ->
+            }
+            case de.gecheckt.pdf.umbenenner.domain.model.TechnicalDocumentError technicalError -> {
                 LOG.warn("Processing FAILED for '{}': {} (Technical error – retryable).",
                         candidate.uniqueIdentifier(), technicalError.errorMessage());
+            }
+            default -> {
+                // Handle any other cases
+            }
         }
 
         return outcome;