Adjust logging levels to reduce verbosity

Changed logging levels from LogInformation to LogDebug in
PdfAttachmentExtractorService and PdfResultPackageService.
This includes logs for PDF conformity levels, ZUGFeRD
Guideline-IDs, saved attachment details, and result report
discovery. These changes aim to reduce log verbosity in
production environments by moving less critical information
to the debug level.

DXApp.TemplateKitProject/Services/PdfAttachmentExtractorService.cs

@@ -38,7 +38,7 @@ public class PdfAttachmentExtractorService(
             };
             result.PdfAWarning = compatibility == PdfACompatibility.None;
 
-            logger.LogInformation(
+            logger.LogDebug(
                 "PDF '{FileName}': Konformität = {Level}",
                 sourceFileName, result.PdfALevel);
 
@@ -50,7 +50,7 @@ public class PdfAttachmentExtractorService(
                 {
                     result.ZugferdGuidelineId = ExtractGuidelineId(xmpData);
                     if (!string.IsNullOrEmpty(result.ZugferdGuidelineId))
-                        logger.LogInformation(
+                        logger.LogDebug(
                             "PDF '{FileName}': Guideline-ID = {GuidelineId}",
                             sourceFileName, result.ZugferdGuidelineId);
                 }
@@ -105,7 +105,7 @@ public class PdfAttachmentExtractorService(
 
             var isZugferd = IsZugferdXml(attachment.FileName);
 
-            logger.LogInformation(
+            logger.LogDebug(
                 "  → Gespeichert: '{FileName}' ({Bytes} Bytes){Zugferd}",
                 safeFileName, data.Length,
                 isZugferd ? " [ZUGFeRD/Factur-X XML]" : string.Empty);

DXApp.TemplateKitProject/Services/PdfResultPackageService.cs

@@ -21,7 +21,7 @@ public class PdfResultPackageService(
             return null;
         }
 
-        logger.LogInformation(
+        logger.LogDebug(
             "Ergebnisbericht gefunden: '{ReportPath}'.", reportPath);
 
         // 2. Ausgabepfad bestimmen