fix(readme): repair broken image paths — add icon_badge + installer preview

- Added resources/images/icon_badge.png (copied from assets/aeon_icon.png)
  which was in untracked assets/ dir and 404-ing on GitHub
- Added resources/images/installer_preview.jpg with gitignore exception
- Fixed README: assets/aeon_icon.png → resources/images/icon_badge.png
- Updated .gitignore: whitelist installer_preview.jpg via negation rule
- All 5 README images now resolve correctly on github.com

Author: Manuel A Delgado

.gitignore

@@ -113,5 +113,7 @@ billing/
 BRAINSTORM.md
 Gemini_Generated_Image*.jpg
 *.jpg
+# Exception: allow committed installer preview
+!resources/images/installer_preview.jpg
 billing/
 assets/icons/raw/

README.md

@@ -4,7 +4,7 @@
 
 <br/>
 
-<img src="assets/aeon_icon.png" alt="Aeon Browser Icon" width="120"/>
+<img src="resources/images/icon_badge.png" alt="Aeon Browser Icon" width="120"/>
 
 # Aeon Browser