- Add source_type field to projects model to distinguish between repository and ZIP sources
- Implement ZIP file storage service with save, load, delete, and metadata operations
- Add database migration to populate source_type for existing projects
- Create ZIP upload endpoint with file handling and metadata tracking
- Add ZIP download endpoint for project file retrieval
- Implement project ZIP info endpoint to check file status and metadata
- Update project creation to support both repository and ZIP source types
- Add project type constants and utility functions for source type handling
- Update database export/import to include source_type field
- Extend frontend components to support ZIP file uploads in project creation
- Add instant analysis page for direct ZIP file scanning without project creation
- Update .gitignore to exclude uploaded ZIP files and metadata
- Enhance project detail and task detail pages with ZIP file management UI
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