- Added support for Jira OAuth with new environment variables for client ID, client secret, and redirect URI.
- Implemented Jira connector routes for OAuth flow, including authorization and callback handling.
- Enhanced Jira connector to support both OAuth 2.0 and legacy API token authentication.
- Updated Jira indexing logic to utilize OAuth credentials with auto-refresh capabilities.
- Removed outdated Jira UI components and adjusted frontend logic to reflect the new integration.
