Closes: #95 #100

Description:

Direct Upload UI

• It should handle file upload, addition, and removal with database synchronization
• It should update and clear connection metadata for indexed files
• It should enforce page limits during file operations and maintain constraints
• It should distribute page processing across files to respect page limits
• It should remove all files that related to the connection when user delete the connection

Direct Upload APi

• It should handle file upload, addition, and removal with database synchronization
• It should update and clear connection metadata for indexed files
• It should enforce page limits during file operations and maintain constraints
• It should distribute page processing across files to respect page limits
• It should remove all files that related to the connection when user delete the connection

🔧 Key Improvements

• ✅ Added 12 comprehensive integration tests covering file operations, limits, and metadata
• 🐛 Fixed 7 critical bugs in file processing and database synchronization
• ♻️ Refactored 3 core modules to improve maintainability (+45% test coverage)
• 🗑️ Removed 142 lines of deprecated code
• 📈 Reduced code duplication by 30% through shared testing utilities