Document design contribution guidelines in DESIGN.md

DESIGN.md

@@ -0,0 +1,25 @@
+# Design Contributions for Plugbrain
+
+Plugbrain is open to design contributions: including UI/UX improvements, app icon enhancements, branding assets, and screenshot mockups.
+
+## How to contribute
+1. Check open GitHub Issues tagged `design`, or create a new one. [issues](https://github.com/msbelaid/PlugBrain/issues?q=label%3Adesign)
+2. Clearly describe your proposal and include previews or links (Figma / Sketch / XD / images).
+3. Align with our current visual direction:
+   - Clean, minimal, focused look
+   - Brain + electric/energy motif as the core identity
+   - Accessible colors and legible typography
+
+## What we look for
+- Designs that improve usability and clarity.
+- Improve the onboarding experience
+- Improve the challenge screen
+- Logo (App icon) redesign
+- Improve the screenshot assets for Google Play
+- Compliance with accessibility standards (color contrast, legibility).
+
+## Assets & references
+- Current app screenshots and icon are available in the repo or issues.
+- If proposing a new asset (e.g. icon), include SVG when possible.
+
+Thank you for helping make Plugbrain better!

README.md

@@ -8,6 +8,7 @@
 [![F-Droid](https://img.shields.io/f-droid/v/app.plugbrain.android?label=Download%20on%20F-Droid&color=green&logo=f-droid)](https://f-droid.org/en/packages/app.plugbrain.android)
 [![IzzyOnDroid](https://img.shields.io/badge/IzzyOnDroid-Available-blue?logo=android&logoColor=white)](https://apt.izzysoft.de/fdroid/index/apk/app.plugbrain.android)
 [![Reddit - r/PlugBrain](https://img.shields.io/badge/Reddit-r%2FPlugBrain-orange?logo=reddit&logoColor=white)](https://www.reddit.com/r/PlugBrain/)
+[![contribute.design](https://contribute.design/api/shield/msbelaid/PlugBrain)](https://contribute.design/msbelaid/PlugBrain)
 ![GitHub stars](https://img.shields.io/github/stars/msbelaid/PlugBrain?style=social)
 </div>
 <img src="assets/plugbrain_example.gif" align="right" width="320" />