Improved app detail view

AltStore/View Components/AppIconView.swift

@@ -30,3 +30,9 @@ struct AppIconView: View {
     }
 }
 
+extension AppIconView: Equatable {
+    /// Prevent re-rendering of the view if the parameters didn't change
+    static func == (lhs: AppIconView, rhs: AppIconView) -> Bool {
+        lhs.iconUrl == rhs.iconUrl && lhs.cornerRadius == rhs.cornerRadius
+    }
+}

AltStore/Views/App Detail/AppDetailView.swift

@@ -32,6 +32,9 @@ struct AppDetailView: View {
     let headerViewHeight: CGFloat = 140
     let permissionColumns = 4
     
+    var headerBlurRadius: CGFloat {
+        min(20, max(0, 20 - (scrollOffset / -150) * 20))
+    }
     var isHeaderViewVisible: Bool {
         scrollOffset < headerViewHeight + 12
     }
@@ -78,8 +81,10 @@ struct AppDetailView: View {
         ZStack(alignment: .center) {
             GeometryReader { proxy in
                 AppIconView(iconUrl: storeApp.iconURL, size: proxy.frame(in: .global).width)
-                    .blur(radius: 20)
+                    .blur(radius: headerBlurRadius)
+                    .offset(y: min(0, scrollOffset))
             }
+            .padding()
             
             AppRowView(app: storeApp)
                 .padding(.horizontal)

AltStore/Views/App Detail/AppPermissionsGrid.swift

@@ -37,7 +37,7 @@ struct AppPermissionGridItemView: View {
                 Image(uiImage: (permission.type.icon?.withRenderingMode(.alwaysTemplate) ?? UIImage(systemName: "questionmark"))!)  // TODO: Replace with system icon
                     .padding()
                     .background(Circle().foregroundColor(Color(.secondarySystemBackground)))
-                Text(permission.type.localizedShortName ?? "")
+                Text(permission.type.localizedShortName ?? permission.type.localizedName ?? "")
             }
             .foregroundColor(.primary)
         }