Replace page TabView with paging ScrollView; fix diff + centering; bump to 3.2

The TabView with .page style broke NavigationLink inside tabs (the page
gesture swallows taps) and centered content. Replace with a horizontal paging
ScrollView using containerRelativeFrame and scrollTargetBehavior(.paging):
same swipe-to-change behavior, no gesture conflicts, diff view works again.
Bump to 3.2.

GiteaPR.xcodeproj/project.pbxproj

@@ -187,7 +187,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 22;
+				CURRENT_PROJECT_VERSION = 23;
 				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "GiteaPR";
@@ -197,7 +197,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 3.1;
+				MARKETING_VERSION = 3.2;
 				PRODUCT_BUNDLE_IDENTIFIER = com.bueso.giteapr;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
@@ -211,7 +211,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 22;
+				CURRENT_PROJECT_VERSION = 23;
 				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "GiteaPR";
@@ -221,7 +221,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 3.1;
+				MARKETING_VERSION = 3.2;
 				PRODUCT_BUNDLE_IDENTIFIER = com.bueso.giteapr;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;

GiteaPR/Detail/PRDetailView.swift

@@ -103,19 +103,31 @@ struct PRDetailView: View {
         VStack(spacing: 0) {
             header(pr)
 
-            // Page-style TabView gives iOS-native swipe-to-change between
+            // Horizontal paging ScrollView — swipeable like a TabView, but
-            // sections (matching iOS 26), while the bottom bar taps select.
+            // without breaking NavigationLink inside the tabs (TabView's .page
-            TabView(selection: $selectedTab) {
+            // style swallows taps and interferes with nested navigation).
-                OverviewTab(pr: pr)
+            ScrollView(.horizontal, showsIndicators: false) {
-                    .tag(DetailTab.overview)
+                HStack(spacing: 0) {
-                ConversationTab(vm: vm)
+                    OverviewTab(pr: pr)
-                    .tag(DetailTab.conversation)
+                        .id(DetailTab.overview)
-                FilesTab(vm: vm)
+                        .containerRelativeFrame(.horizontal)
-                    .tag(DetailTab.files)
+
-                ChecksTab(vm: vm, onRerun: { showRerunConfirm = $0 })
+                    ConversationTab(vm: vm)
-                    .tag(DetailTab.checks)
+                        .id(DetailTab.conversation)
+                        .containerRelativeFrame(.horizontal)
+
+                    FilesTab(vm: vm)
+                        .id(DetailTab.files)
+                        .containerRelativeFrame(.horizontal)
+
+                    ChecksTab(vm: vm, onRerun: { showRerunConfirm = $0 })
+                        .id(DetailTab.checks)
+                        .containerRelativeFrame(.horizontal)
+                }
+                .scrollTargetLayout()
             }
-            .tabViewStyle(.page(indexDisplayMode: .never))
+            .scrollTargetBehavior(.paging)
+            .scrollPosition(id: $selectedTab)
             .ignoresSafeArea(edges: .bottom)
 
             bottomTabBar