Stephan Krusche

When opening attachments (either directly in lectures or in lecture units), they get a random name, e.g. `LectureAttachment_2024-10-10T13-52-39-088_820ef72b.pdf` instead of `Informatics Student Code of Conduct` in this example here This...

`Development`: Convert DTOs to records

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### Checklist #### General - [ ] I tested **all** changes and their related features with **all** corresponding user types on a test server. - [ ] This is a...

`General`: Improve user administration

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### Checklist #### General - [ ] This is a small issue that I tested locally and was confirmed by another developer on a test server. - [x] Language: I...

We should avoid using database entities in the MailService and instead use DTOs with Java records

### Checklist #### General - [ ] I tested **all** changes and their related features with **all** corresponding user types on a test server. - [ ] This is a...

Course dates validation too strict

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### Describe the bug I would like to start a course before the enrollment is possible. ### To Reproduce Set the start date before the enrollment date ### Expected behavior...

`Development`: Migrate from Hazelcast to Redis

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# EXPERIMENTAL ### Checklist #### General - [ ] I tested **all** changes and their related features with **all** corresponding user types on a test server. - [ ] This...

:bangbang: Hotfix: Allow graph creation with empty nodes and links :bangbang:

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**What kind of change does this PR introduce?** (check one with "x") - [x] Bugfix **What is the current behavior?** (You can also link to an open issue here) At...

Development: Improve code documentation and permission check performance

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### Checklist #### General - [ ] I tested **all** changes and their related features with **all** corresponding user types on a test server. - [ ] This is a...

`Programming exercises`: Remove the need to combine template commits

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With this PR, the history in template repos is kept. When students start the exercise a new bare repository is created that contains one commit with the latest version of...