📝 Update contributing guidelines

CONTRIBUTING.md

@@ -1,5 +1,5 @@
 <!--
-SPDX-FileCopyrightText: 2023 Marlon W (Mawoka)
+SPDX-FileCopyrightText: 2026 Marlon W (Mawoka)
 
 SPDX-License-Identifier: MPL-2.0
 -->
@@ -8,6 +8,24 @@ SPDX-License-Identifier: MPL-2.0
 For the development-setup, please check out the
 docs: [https://classquiz.de/docs/develop](https://classquiz.de/docs/develop)
 
+## Coding guidelines
+- _Try_ to use type hints (python) and TypeScript everwhere possible (for python `foo() -> dict` is better than nothing)
+
+### Frontend
+- Follow the existing coding style
+	- CamelCase for classnames
+	- snake_case for function names, variables and everything else
+	- aka Rust-style
+- Feel free to reduce complexity in the code you're already touching
+- always make sure the frontend builds (`pnpm build`) as it catches most typos
+- Stick to current design language
+- Use premade Brown and GreyButton components
+
+
+## AI Usage
+- Feel free to use any AI help
+- Please refrain from using coding agents
+
 ## Formatting git-commits
 
 Please use [Gitmoji](https://gitmoji.dev/) to format your commits.
@@ -21,7 +39,6 @@ Just do so.
 If it is a security-related bug, please contact me at [mawoka.eu/contact](https://mawoka.eu/contact). If not, just open
 an issue here on GitHub.
 
-**Please try to reproduce the bug with the adblocker disabled**, so I will be able to see the bug in Sentry.
 
 ## Want to translate?