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. Thanks, Nils, for that great contribution.
Added support for loading arbitrary document data into some assistants. This functionality replaces the previous PDF reading function and was contributed by Nils as well.
Improved the loading of some components that require data fetching, resulting in a more responsive UI.
Improved some awkward phrasings in English and German.
Improved the implementation of configuration plugins to enhance long-term maintainability.
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.