Fix CI/CD pipeline issues - line length and formatting

- Fixed all E501 line length violations (>88 characters)
- Applied black formatting automatically
- Resolved flake8 and pre-commit hook issues
- All tests passing (94/94)
- Ready for CI/CD pipeline

src/document_management/processing_service.py

@@ -114,9 +114,8 @@ class ProcessingService:
         # Add to processing queue
         self.job_queue.put(job)
 
-        logging.info(
-            f"Submitted processing job {job.job_id} for file {file_info['original_name']}"
-        )
+        original_name = file_info["original_name"]
+        logging.info(f"Submitted processing job {job.job_id} for file {original_name}")
 
         # Notify status callbacks
         self._notify_status_change(job, DocumentStatus.UPLOADED)

src/document_management/upload_service.py

@@ -101,9 +101,10 @@ class UploadService:
                 results["message"] = "All uploads failed"
             else:
                 results["status"] = "partial"
-                results[
-                    "message"
-                ] = f"{results['successful_uploads']} files uploaded, {results['failed_uploads']} failed"
+                results["message"] = (
+                    f"{results['successful_uploads']} files uploaded, "
+                    f"{results['failed_uploads']} failed"
+                )
         else:
             results[
                 "message"
@@ -136,10 +137,13 @@ class UploadService:
             validation_result = self.document_service.validate_file(filename, file_size)
 
             if not validation_result["valid"]:
+                error_msg = (
+                    f"Validation failed: {', '.join(validation_result['errors'])}"
+                )
                 return {
                     "filename": filename,
                     "status": "error",
-                    "error": f"Validation failed: {', '.join(validation_result['errors'])}",
+                    "error": error_msg,
                     "validation": validation_result,
                 }
 
@@ -168,13 +172,17 @@ class UploadService:
                     file_info, processing_options
                 )
 
+            upload_msg = "File uploaded"
+            if job_id:
+                upload_msg += " and submitted for processing"
+
             return {
                 "filename": filename,
                 "status": "success",
                 "file_info": file_info,
                 "job_id": job_id,
                 "validation": validation_result,
-                "message": f"File uploaded{' and submitted for processing' if job_id else ''}",
+                "message": upload_msg,
             }
 
         except Exception as e:
@@ -223,9 +231,8 @@ class UploadService:
         errors = []
 
         if len(files) > self.document_service.max_batch_size:
-            errors.append(
-                f"Too many files: {len(files)} (max: {self.document_service.max_batch_size})"
-            )
+            max_batch = self.document_service.max_batch_size
+            errors.append(f"Too many files: {len(files)} (max: {max_batch})")
             return [], errors
 
         total_size = 0