style: use cropped text-only logo in header

crop.py

@@ -0,0 +1,5 @@
+from PIL import Image
+img = Image.open('proto/public/mozdit_logo.png')
+# Crop box is (left, upper, right, lower)
+cropped = img.crop((380, 140, 880, 300))
+cropped.save('proto/public/mozdit_logo_text.png')

proto/src/components/Header.tsx

@@ -50,7 +50,7 @@ export default function Header() {
               className="group flex items-center gap-2 transition-all duration-200"
             >
               <img 
-                src="/mozdit_logo.png" 
+                src="/mozdit_logo_text.png" 
                 alt={siteConfig.general.name} 
                 className="h-10 w-auto transition-transform duration-200 group-hover:scale-105"
               />