Fix MultipartFile.transferTo overwrite + maxDPI default 500 (cucumber e2e bugs)

app/common/src/main/java/stirling/software/common/model/ApplicationProperties.java

@@ -854,7 +854,10 @@ public class ApplicationProperties {
         private Boolean enableDesktopInstallSlide;
         private Datasource datasource;
         private boolean disableSanitize;
-        private int maxDPI;
+        // Default mirrors settings.yml.template (maxDPI: 500). Without an explicit default this
+        // primitive is 0, which makes every DPI check (dpi > maxDPI) fail with "maximum safe limit
+        // of 0" when the value is not populated from settings.
+        private int maxDPI = 500;
         private boolean enableUrlToPDF;
         private Html html = new Html();
         private CustomPaths customPaths = new CustomPaths();

app/common/src/main/java/stirling/software/common/model/MultipartFile.java

@@ -60,7 +60,10 @@ public interface MultipartFile {
 
     default void transferTo(Path dest) throws IOException {
         try (InputStream in = getInputStream()) {
-            Files.copy(in, dest);
+            // Spring's MultipartFile#transferTo overwrites an existing destination. Callers commonly
+            // pass a path from Files.createTempFile(...) (which has already created an empty file),
+            // so REPLACE_EXISTING is required - a plain Files.copy would throw FileAlreadyExists.
+            Files.copy(in, dest, java.nio.file.StandardCopyOption.REPLACE_EXISTING);
         }
     }
 }

app/common/src/main/java/stirling/software/common/model/multipart/FileUploadMultipartFile.java

@@ -72,6 +72,9 @@ public class FileUploadMultipartFile implements MultipartFile {
 
     @Override
     public void transferTo(Path dest) throws IOException {
-        Files.copy(delegate.uploadedFile(), dest);
+        // Overwrite semantics like Spring's MultipartFile#transferTo; callers often pass a
+        // Files.createTempFile(...) path that already exists, so REPLACE_EXISTING is required.
+        Files.copy(
+                delegate.uploadedFile(), dest, java.nio.file.StandardCopyOption.REPLACE_EXISTING);
     }
 }