feat: Product card fade-in animation

Adobe Downloader.xcodeproj/xcuserdata/hejinhui.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist

@@ -48,8 +48,8 @@
             endingColumnNumber = "9223372036854775807"
             startingLineNumber = "724"
             endingLineNumber = "724"
-            landmarkName = "alertAction()"
+            landmarkName = "errorDescription"
-            landmarkType = "7">
+            landmarkType = "24">
          </BreakpointContent>
       </BreakpointProxy>
    </Breakpoints>

Adobe Downloader/AppDelegate.swift

@@ -36,7 +36,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         }
 
         if let window = NSApp.windows.first {
-            window.minSize = NSSize(width: 792, height: 600)
+            window.minSize = NSSize(width: 800, height: 765)
         }
         
         eventMonitor = NSEvent.addLocalMonitorForEvents(matching: .keyDown) { [weak self] event in

Adobe Downloader/Views/MainContentView.swift

@@ -81,6 +81,8 @@ struct ProductGridView: View {
             ) {
                 ForEach(products, id: \.id) { uniqueProduct in
                     AppCardView(uniqueProduct: uniqueProduct)
+                        .id(uniqueProduct.id)
+                        .modifier(AppearAnimationModifier())
                 }
             }
             .padding()
@@ -97,4 +99,24 @@ struct ProductGridView: View {
         }
         .background(Color(.clear))
     }
+}
+
+struct AppearAnimationModifier: ViewModifier {
+    @State private var opacity: Double = 0
+    @State private var offset: CGFloat = 20
+    @State private var scale: CGFloat = 0.95
+    
+    func body(content: Content) -> some View {
+        content
+            .opacity(opacity)
+            .offset(y: offset)
+            .scaleEffect(scale)
+            .onAppear {
+                withAnimation(.easeInOut(duration: 0.5)) {
+                    opacity = 1
+                    offset = 0
+                    scale = 1
+                }
+            }
+    }
 } 

Adobe Downloader/Views/ToolbarView.swift

@@ -25,7 +25,7 @@ struct BeautifulSearchField: View {
         .padding(8)
         .background(
             RoundedRectangle(cornerRadius: 8)
-                .fill(Color(NSColor.controlBackgroundColor).opacity(0.8))
+                .fill(Color(NSColor.controlBackgroundColor).opacity(0.3))
                 .overlay(
                     RoundedRectangle(cornerRadius: 8)
                         .stroke(Color.secondary.opacity(0.1), lineWidth: 1)