style: fix code formatting with black, isort, and flake8

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

app/models.py

@@ -1,6 +1,6 @@
 # app/models.py
 
-from sqlalchemy import Column, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint, func, Boolean
+from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint, func
 
 from app.database import Base
 
@@ -44,11 +44,11 @@ class FileRecord(Base):
 
     # MIME type or extension (optional)
     mime_type = Column(String)
-    
+
     # Deduplication tracking: True if this file is a duplicate of another file
     # When a duplicate is detected, this file record is created but marked as duplicate
     is_duplicate = Column(Boolean, default=False, nullable=False, index=True)
-    
+
     # If this is a duplicate, record the ID of the original file for reference
     duplicate_of_id = Column(Integer, ForeignKey("files.id"), nullable=True)