archived zip fix and security updates

archives/README.md

@@ -0,0 +1,18 @@
+# Archives Directory
+
+This directory stores completed job ZIP files for download.
+
+ZIP files are automatically:
+- Created after successful PDF processing
+- Named with timestamp: `renamed_YYYY-MM-DD_HH-MM-SS.zip`
+- Available for download via the web interface
+- Deleted when jobs are manually deleted
+- Automatically cleaned up after 7 days (if cleanup function is scheduled)
+
+Structure:
+```
+archives/
+├── renamed_2025-11-07_10-30-00.zip
+├── renamed_2025-11-07_11-15-30.zip
+└── ...
+```