exception handling error to warn etc (#3866)

# Description of Changes

Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: pixeebot[bot] <104101892+pixeebot[bot]@users.noreply.github.com>

common/src/main/java/stirling/software/common/service/CustomPDFDocumentFactory.java

@@ -411,7 +411,7 @@ public class CustomPDFDocumentFactory {
             try {
                 document.setAllSecurityToBeRemoved(true);
             } catch (Exception e) {
-                log.error("Decryption failed", e);
+                ExceptionUtils.logException("PDF decryption", e);
                 throw new IOException("PDF decryption failed", e);
             }
         }

common/src/main/java/stirling/software/common/service/TempFileCleanupService.java

@@ -72,12 +72,12 @@ public class TempFileCleanupService {
             fileName ->
                     fileName.contains("jetty")
                             || fileName.startsWith("jetty-")
-                            || fileName.equals("proc")
-                            || fileName.equals("sys")
-                            || fileName.equals("dev")
-                            || fileName.equals("hsperfdata_stirlingpdfuser")
+                            || "proc".equals(fileName)
+                            || "sys".equals(fileName)
+                            || "dev".equals(fileName)
+                            || "hsperfdata_stirlingpdfuser".equals(fileName)
                             || fileName.startsWith("hsperfdata_")
-                            || fileName.equals(".pdfbox.cache");
+                            || ".pdfbox.cache".equals(fileName);
 
     @PostConstruct
     public void init() {
@@ -153,12 +153,14 @@ public class TempFileCleanupService {
         // Clean up unregistered temp files based on our cleanup strategy
         boolean containerMode = isContainerMode();
         int unregisteredDeletedCount = cleanupUnregisteredFiles(containerMode, true, maxAgeMillis);
-
+        
+        if(registeredDeletedCount >0 || unregisteredDeletedCount >0 || directoriesDeletedCount >0) {
         log.info(
                 "Scheduled cleanup complete. Deleted {} registered files, {} unregistered files, {} directories",
                 registeredDeletedCount,
                 unregisteredDeletedCount,
                 directoriesDeletedCount);
+        }
     }
 
     /**
@@ -166,7 +168,6 @@ public class TempFileCleanupService {
      * important in Docker environments where temp files persist between container restarts.
      */
     private void runStartupCleanup() {
-        log.info("Running startup temporary file cleanup");
         boolean containerMode = isContainerMode();
 
         log.info(
@@ -178,7 +179,6 @@ public class TempFileCleanupService {
         long maxAgeMillis = containerMode ? 0 : 24 * 60 * 60 * 1000; // 0 or 24 hours
 
         int totalDeletedCount = cleanupUnregisteredFiles(containerMode, false, maxAgeMillis);
-
         log.info(
                 "Startup cleanup complete. Deleted {} temporary files/directories",
                 totalDeletedCount);
@@ -225,7 +225,7 @@ public class TempFileCleanupService {
                             tempDir -> {
                                 try {
                                     String phase = isScheduled ? "scheduled" : "startup";
-                                    log.info(
+                                    log.debug(
                                             "Scanning directory for {} cleanup: {}",
                                             phase,
                                             tempDir);

common/src/main/java/stirling/software/common/util/ExceptionUtils.java

@@ -298,9 +298,9 @@ public class ExceptionUtils {
      * @param e the exception that occurred
      */
     public static void logException(String operation, Exception e) {
-        if (e instanceof IOException && PdfErrorUtils.isCorruptedPdfError((IOException) e)) {
+        if (PdfErrorUtils.isCorruptedPdfError(e)) {
             log.warn("PDF corruption detected during {}: {}", operation, e.getMessage());
-        } else if (isEncryptionError((IOException) e) || isPasswordError((IOException) e)) {
+        } else if (e instanceof IOException && (isEncryptionError((IOException) e) || isPasswordError((IOException) e))) {
             log.info("PDF security issue during {}: {}", operation, e.getMessage());
         } else {
             log.error("Unexpected error during {}", operation, e);

common/src/main/java/stirling/software/common/util/PdfErrorUtils.java

@@ -12,7 +12,26 @@ public class PdfErrorUtils {
      * @return true if the error indicates PDF corruption, false otherwise
      */
     public static boolean isCorruptedPdfError(IOException e) {
-        String message = e.getMessage();
+        return isCorruptedPdfError(e.getMessage());
+    }
+
+    /**
+     * Checks if any Exception indicates a corrupted PDF file.
+     *
+     * @param e the Exception to check
+     * @return true if the error indicates PDF corruption, false otherwise
+     */
+    public static boolean isCorruptedPdfError(Exception e) {
+        return isCorruptedPdfError(e.getMessage());
+    }
+
+    /**
+     * Checks if an error message indicates a corrupted PDF file.
+     *
+     * @param message the error message to check
+     * @return true if the message indicates PDF corruption, false otherwise
+     */
+    private static boolean isCorruptedPdfError(String message) {
         if (message == null) return false;
 
         // Check for common corruption indicators
@@ -24,6 +43,10 @@ public class PdfErrorUtils {
                 || message.contains("damaged")
                 || message.contains("Unknown dir object")
                 || message.contains("Can't dereference COSObject")
+                || message.contains("parseCOSString string should start with")
+                || message.contains("ICCBased colorspace array must have a stream")
+                || message.contains("1-based index not found")
+                || message.contains("Invalid dictionary, found:")
                 || message.contains("AES initialization vector not fully read")
                 || message.contains("BadPaddingException")
                 || message.contains("Given final block not properly padded");