feat: improve UI theming consistency across components

- Replace hardcoded colors with semantic color names for better theming
- Update text colors to use .primaryText and .secondaryText
- Replace Color.bodyText with Color.primaryText throughout
- Update Color.tintColor usage for better consistency
- Improve MultilineTextField placeholder color theming
- Standardize color usage in FeedDetail, UserDetail, UserFeed pages
- Enhance RichText component color consistency

These changes improve the overall visual consistency and prepare
the app for better theme support in the future.

🤖 Generated with Claude Code (https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: graycreate

V2er/View/FeedDetail/FeedDetailPage.swift

@@ -134,7 +134,7 @@ struct FeedDetailPage: StateView, KeyboardReadable, InstanceIdentifiable {
                     } label: {
                         Image(systemName: "arrow.up.circle.fill")
                             .font(.title.weight(.regular))
-                            .foregroundColor(Color.bodyText.opacity(hasReplyContent ? 1.0 : 0.6))
+                            .foregroundColor(Color.tintColor.opacity(hasReplyContent ? 1.0 : 0.6))
                             .padding(.trailing, 6)
                             .padding(.vertical, 3)
                     }

V2er/View/FeedDetail/ReplyItemView.swift

@@ -30,8 +30,10 @@ struct ReplyItemView: View {
                 HStack {
                     VStack (alignment: .leading, spacing: 4) {
                         Text(info.userName)
+                            .foregroundColor(.primaryText)
                         Text(info.time)
                             .font(.caption2)
+                            .foregroundColor(.secondaryText)
                     }
                     Spacer()
                     //                    Image(systemName: "heart")

V2er/View/Me/UserDetailPage.swift

@@ -248,12 +248,13 @@ struct UserDetailPage: StateView {
     struct ReplyItemView: View {
         var data: UserDetailInfo.ReplyInfo.Item
         let quoteFont = Style.font(UIFont.prfered(.footnote))
-            .foregroundColor(Color.bodyText.uiColor)
+            .foregroundColor(Color.primaryText.uiColor)
 
         var body: some View {
             VStack(spacing: 0) {
                 Text(data.title)
                     .font(.footnote)
+                    .foregroundColor(.primaryText)
                     .greedyWidth(.leading)
                 RichText {
                     data.content
@@ -272,6 +273,7 @@ struct UserDetailPage: StateView {
                 .padding(.vertical, 6)
                 Text(data.time)
                     .font(.footnote)
+                    .foregroundColor(.secondaryText)
                     .greedyWidth(.trailing)
             }
             .padding(12)

V2er/View/Me/UserFeedPage.swift

@@ -56,6 +56,7 @@ struct UserFeedPage: StateView, InstanceIdentifiable {
                 HStack(alignment: .top) {
                     VStack(alignment: .leading, spacing: 5) {
                         Text(data.userName)
+                            .foregroundColor(.primaryText)
                             .lineLimit(1)
                         Text(data.replyUpdate)
                             .lineLimit(1)
@@ -67,19 +68,21 @@ struct UserFeedPage: StateView, InstanceIdentifiable {
                     NavigationLink(destination: TagDetailPage()) {
                         Text(data.tag)
                             .font(.footnote)
-                            .foregroundColor(.black)
+                            .foregroundColor(.primaryText)
                             .lineLimit(1)
                             .padding(.horizontal, 14)
                             .padding(.vertical, 8)
                             .background(Color.lightGray)
                     }
                 }
                 Text(data.title)
+                    .foregroundColor(.primaryText)
                     .greedyWidth(.leading)
                     .lineLimit(2)
                 Text("评论\(data.replyNum)")
                     .lineLimit(1)
                     .font(.footnote)
+                    .foregroundColor(.secondaryText)
                     .greedyWidth(.trailing)
             }
             .padding(12)

V2er/View/Settings/OtherSettingsView.swift

@@ -45,7 +45,7 @@ struct OtherSettingsView: View {
                             .foregroundColor(Color.tintColor)
                         Image(systemName: "chevron.right")
                             .font(.body.weight(.regular))
-                            .foregroundColor(.gray)
+                            .foregroundColor(.secondaryText)
                             .padding(.trailing, 16)
                     }
                 }

V2er/View/Widget/MultilineTextField.swift

@@ -26,7 +26,7 @@ fileprivate struct UITextViewWrapper: UIViewRepresentable {
         textField.isUserInteractionEnabled = true
         textField.isScrollEnabled = false
         textField.backgroundColor = UIColor.clear
-        textField.textColor = Color.bodyText.uiColor
+        textField.textColor = Color.primaryText.uiColor
 
 //        textField.textContainer.maximumNumberOfLines = 5
 
@@ -42,6 +42,8 @@ fileprivate struct UITextViewWrapper: UIViewRepresentable {
         if uiView.text != self.text {
             uiView.text = self.text
         }
+        // Update text color to ensure it responds to theme changes
+        uiView.textColor = Color.primaryText.uiColor
         if uiView.window != nil, !uiView.isFirstResponder {
 //            uiView.becomeFirstResponder()
         }
@@ -127,7 +129,7 @@ struct MultilineTextField: View {
         Group {
             if showingPlaceholder {
                 Text(placeholder)
-                    .foregroundColor(.gray)
+                    .foregroundColor(.secondaryText)
                     .padding(.leading, 4)
             }
         }

V2er/View/Widget/RichText/RichText.swift

@@ -38,7 +38,7 @@ struct RichText: View {
 
     struct Styles {
         public static let base = Style.font(UIFont.prfered(.body))
-            .foregroundColor(Color.bodyText.uiColor)
+            .foregroundColor(Color.primaryText.uiColor)
         public static let link = Style("a")
             .font(.boldSystemFont(ofSize: 16))
             .foregroundColor(Color.url.uiColor, .normal)