v0.9.49, build 224 (2025-06-xx xx:xx UTC)

Added a library by Nils Kruthoff (nilskruthoff) that allows AI Studio to read PowerPoint files. This feature is not yet available in the UI, but it will soon be available. Thanks, Nils, for that great contribution.
Improved the loading of some components that require data fetching, resulting in a more responsive UI.
Improved some awkward phrasings in English and German.
Changed the timestamp display to use the local datetime format for the chats and assistants.
Fixed a bug when editing data sources that caused the selected retrieval process of an ERI data source to not load correctly.
Upgraded to Rust 1.88.0.
Upgraded MudBlazor to version 8.8.0.
Upgraded Pdfium to version 137.0.7215.0.
Upgraded other dependencies to the latest versions.