New Features

Teachers can now temporarily disable the cooloff period (imposed delay between consecutive submissions) for specific assignments. For example, a teacher might disable the cooloff for 15 minutes, after which it automatically reactivates. During that window, students can submit as as often as needed without waiting. This is useful when a teacher is demonstrating something and wants students to be able to resubmit immediately or to help diagnose a specific problem.
Implement MCP (Model Context Protocol) endpoints for assignment information retrieval and search functionality. Still experimental, instructions in README.

Enhancements

Docker images are now created automatically upon each release (thanks @mdmourao)
Improved docker configuration (thanks @mdmourao)
Improved validation of jacoco configuration when creating assignments that calculate the student test coverage.
In the upload page, it now redirects to login on session timeout instead of showing a balloon with HTML.
Update assignment cloning to store the latest commit hash after cloning.
Update ID generation strategy to use GenerationType.IDENTITY for entity classes.
Periodically refresh access to assignments' ssh keys (issue #78)
Refactoring of several classes due to the upgrade to Spring Boot 3.4.8