- Add owner/admin/member roles with proper permissions
- Implement invite links and join requests system
- Add organization settings dialog with member management
- Create database migrations for invitations and invite links
- Update backend API with org management endpoints
- Fix compilation errors and audit logging
- Update frontend models and API integration
- Add GenerateWithDuration method to JWT manager to support custom expiration times
- Update viewerHandler and userViewerHandler to generate viewer-specific tokens with 24-hour expiration
- This fixes the issue where PDF viewer fails due to token expiration within 15 minutes
- Add [VIEWER-SESSION] logging to track viewer session creation
- Tokens now remain valid long enough for users to view, navigate, and interact with PDFs
