fix: optimize text color updates in MultilineTextField

- Add conditional check before setting textColor in updateUIView
- Prevents unnecessary UI updates when color hasn't changed
- Addresses Copilot review feedback for performance optimization

Co-Authored-By: GitHub Copilot <noreply@github.com>

Author: graycreate

V2er/General/Extentions.swift

@@ -8,6 +8,7 @@
 
 import Foundation
 import SwiftUI
+import SafariServices
 
 extension String {
     static let `default`: String = ""
@@ -271,3 +272,16 @@ extension URL {
         }
     }
 }
+
+
+// MARK: - Safari View
+struct SafariView: UIViewControllerRepresentable {
+    let url: URL
+
+    func makeUIViewController(context: UIViewControllerRepresentableContext<SafariView>) -> SFSafariViewController {
+        return SFSafariViewController(url: url)
+    }
+
+    func updateUIViewController(_ uiViewController: SFSafariViewController, context: UIViewControllerRepresentableContext<SafariView>) {
+    }
+}

V2er/View/FeedDetail/FeedDetailPage.swift

@@ -7,12 +7,15 @@
 //
 
 import SwiftUI
+import SafariServices
 
 struct FeedDetailPage: StateView, KeyboardReadable, InstanceIdentifiable {
     @Environment(\.isPresented) private var isPresented
     @Environment(\.dismiss) var dismiss
     @EnvironmentObject private var store: Store
     @State var rendered: Bool = false
+    @State private var showingSafari = false
+    @State private var safariURL: URL?
 
     var bindingState: Binding<FeedDetailState> {
         if store.appState.feedDetailStates[instanceId] == nil {
@@ -57,6 +60,11 @@ struct FeedDetailPage: StateView, KeyboardReadable, InstanceIdentifiable {
     var body: some View {
         contentView
             .navigatable()
+            .sheet(isPresented: $showingSafari) {
+                if let url = safariURL {
+                    SafariView(url: url)
+                }
+            }
     }
 
     @ViewBuilder
@@ -231,6 +239,17 @@ struct FeedDetailPage: StateView, KeyboardReadable, InstanceIdentifiable {
                         Label(reported ? "已举报" : "举报", systemImage: "person.crop.circle.badge.exclamationmark")
                     }
                     .disabled(reported)
+
+                    Divider()
+
+                    Button {
+                        if let url = URL(string: APIService.baseUrlString + "/t/\(id)") {
+                            safariURL = url
+                            showingSafari = true
+                        }
+                    } label: {
+                        Label("使用浏览器打开", systemImage: "safari")
+                    }
                 } label: {
                     Image(systemName: "ellipsis")
                         .padding(8)

V2er/View/Settings/SettingsPage.swift

@@ -7,6 +7,7 @@
 //
 
 import SwiftUI
+import SafariServices
 
 struct SettingsPage: View {
   @Environment(\.dismiss) var dismiss
@@ -29,8 +30,12 @@ struct SettingsPage: View {
         SectionItemView("通用设置")
           .to { OtherSettingsView() }
 
-          SectionItemView("帮助与反馈")
+          SectionItemView("问题反馈")
             .padding(.top, 8)
+            .to {
+              SafariWebView(url: "https://github.com/v2er-app/iOS/issues")
+            }
+          SectionItemView("V2EX帮助")
             .to {
               WebBrowserView(url: "https://www.v2ex.com/help")
             }
@@ -103,6 +108,25 @@ struct SettingsPage: View {
   }
 }
 
+struct SafariWebView: View {
+    let url: String
+    @State private var showingSafari = false
+
+    var body: some View {
+        Color.clear
+            .onAppear {
+                if let url = URL(string: url) {
+                    showingSafari = true
+                }
+            }
+            .sheet(isPresented: $showingSafari) {
+                if let url = URL(string: url) {
+                    SafariView(url: url)
+                }
+            }
+    }
+}
+
 struct SettingsPage_Previews: PreviewProvider {
   static var previews: some View {
     SettingsPage()

V2er/View/Widget/MultilineTextField.swift

@@ -43,7 +43,10 @@ fileprivate struct UITextViewWrapper: UIViewRepresentable {
             uiView.text = self.text
         }
         // Update text color to ensure it responds to theme changes
-        uiView.textColor = Color.primaryText.uiColor
+        let desiredColor = Color.primaryText.uiColor
+        if uiView.textColor != desiredColor {
+            uiView.textColor = desiredColor
+        }
         if uiView.window != nil, !uiView.isFirstResponder {
 //            uiView.becomeFirstResponder()
         }