Merge icon, delete-branch-after-merge setting, floating tab bar; bump to 2.0

- Merge button: use the proper SF Symbol 'arrow.triangle.merge' instead of
  the download icon 'arrow.down.circle'.
- Add a Settings toggle 'Delete branch after merge'. When on, the merge call
  passes delete_branch_after_merge=true and the head branch is deleted after
  a successful merge (best-effort).
- PR detail bottom tab bar: floating capsule style (regularMaterial + shadow)
  like the latest iOS tab bars, instead of a full-width bar.
- Bump to 2.0.

GiteaPR.xcodeproj/project.pbxproj

@@ -187,7 +187,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 10;
+				CURRENT_PROJECT_VERSION = 11;
 				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "GiteaPR";
@@ -197,7 +197,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.9;
+				MARKETING_VERSION = 2.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.bueso.giteapr;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
@@ -211,7 +211,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 10;
+				CURRENT_PROJECT_VERSION = 11;
 				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "GiteaPR";
@@ -221,7 +221,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.9;
+				MARKETING_VERSION = 2.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.bueso.giteapr;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;

GiteaPR/Detail/PRDetailView.swift

@@ -131,7 +131,9 @@ struct PRDetailView: View {
         .background(Color(.secondarySystemBackground))
     }
 
-    /// Bottom tab bar: icon-only navigation between the PR's sections.
+    /// Bottom tab bar: icon-only navigation between the PR's sections, in a
+    /// floating capsule style (like the latest iOS tab bars) rather than a
+    /// full-width bar.
     private var bottomTabBar: some View {
         HStack {
             ForEach(DetailTab.allCases) { tab in
@@ -149,8 +151,15 @@ struct PRDetailView: View {
                 }
             }
         }
-        .padding(.vertical, 6)
-        .background(.bar)
+        .padding(.vertical, 8)
+        .padding(.horizontal, 6)
+        .background(
+            Capsule()
+                .fill(.regularMaterial)
+                .shadow(color: .black.opacity(0.15), radius: 8, y: 2)
+        )
+        .padding(.horizontal, 16)
+        .padding(.bottom, 8)
     }
 
     private var reviewMenu: some View {
@@ -173,7 +182,7 @@ struct PRDetailView: View {
         Button {
             showMergeSheet = true
         } label: {
-            Image(systemName: "arrow.down.circle")
+            Image(systemName: "arrow.triangle.merge")
         }
         .disabled(vm.ciStatus == .failure &&
                   SettingsStore.shared.mergeGateMode == .block)

GiteaPR/Detail/PRDetailViewModel.swift

@@ -130,8 +130,16 @@ final class PRDetailViewModel: ObservableObject {
         busyMessage = "Merging…"
         defer { busyMessage = nil }
         do {
+            let deleteBranch = SettingsStore.shared.deleteBranchAfterMerge
             try await client.merge(owner: owner, repo: repo.name,
-                                   number: prNumber, method: method)
+                                   number: prNumber, method: method,
+                                   deleteBranchAfterMerge: deleteBranch)
+            // If the setting is on, delete the head branch after a successful
+            // merge (best-effort; the branch may already be gone or protected).
+            if deleteBranch, let head = pr?.head?.ref {
+                try? await client.deleteBranch(owner: owner, repo: repo.name,
+                                               branch: head)
+            }
             // Refresh the PR state to reflect the merge.
             pr = try? await client.pullRequest(owner: owner, repo: repo.name,
                                                number: prNumber)

GiteaPR/Networking/GiteaClient.swift

@@ -211,12 +211,23 @@ struct GiteaClient {
     }
 
     func merge(owner: String, repo: String, number: Int,
-               method: String) async throws {
-        struct Body: Encodable { let Do: String } // 'Do' = merge method: merge|rebase|squash
+               method: String, deleteBranchAfterMerge: Bool) async throws {
+        struct Body: Encodable {
+            let Do: String          // merge|rebase|squash
+            let delete_branch_after_merge: Bool
+        }
         _ = try await request(
             "repos/\(owner)/\(repo)/pulls/\(number)/merge",
             method: "POST",
-            body: try JSONEncoder().encode(Body(Do: method)))
+            body: try JSONEncoder().encode(Body(Do: method,
+                                                 delete_branch_after_merge: deleteBranchAfterMerge)))
+    }
+
+    /// Delete a branch (used after merging when the setting is enabled).
+    func deleteBranch(owner: String, repo: String, branch: String) async throws {
+        let encoded = branch.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? branch
+        _ = try await request("repos/\(owner)/\(repo)/branches/\(encoded)",
+                              method: "DELETE")
     }
 
     func setState(owner: String, repo: String, number: Int,

GiteaPR/Settings/SettingsStore.swift

@@ -23,12 +23,17 @@ final class SettingsStore: ObservableObject {
         didSet { UserDefaults.standard.set(mergeGateMode.rawValue,
                                            forKey: "mergeGateMode") }
     }
+    @Published var deleteBranchAfterMerge: Bool {
+        didSet { UserDefaults.standard.set(deleteBranchAfterMerge,
+                                           forKey: "deleteBranchAfterMerge") }
+    }
 
     private init() {
         instanceURL = KeychainHelper.get("instanceURL") ?? "https://gitea.bueso.eu"
         token = KeychainHelper.get("token") ?? ""
         let raw = UserDefaults.standard.string(forKey: "mergeGateMode")
         mergeGateMode = MergeGateMode(rawValue: raw ?? "") ?? .warn
+        deleteBranchAfterMerge = UserDefaults.standard.bool(forKey: "deleteBranchAfterMerge")
     }
 
     var isConfigured: Bool {

GiteaPR/Settings/SettingsView.swift

@@ -5,6 +5,7 @@ struct SettingsView: View {
     @State private var instanceURL: String
     @State private var token: String
     @State private var mergeGateMode: MergeGateMode
+    @State private var deleteBranchAfterMerge: Bool
     @State private var testResult: TestResult?
     @State private var testing = false
     @State private var showLogoutConfirm = false
@@ -18,6 +19,7 @@ struct SettingsView: View {
         _instanceURL = State(initialValue: SettingsStore.shared.instanceURL)
         _token = State(initialValue: SettingsStore.shared.token)
         _mergeGateMode = State(initialValue: SettingsStore.shared.mergeGateMode)
+        _deleteBranchAfterMerge = State(initialValue: SettingsStore.shared.deleteBranchAfterMerge)
     }
 
     var body: some View {
@@ -49,6 +51,7 @@ struct SettingsView: View {
                     Text("Warn mode shows CI status and allows merging a red PR after confirmation. Block mode disables merge while any check is failing.")
                         .font(.caption)
                         .foregroundColor(.secondary)
+                    Toggle("Delete branch after merge", isOn: $deleteBranchAfterMerge)
                 }
 
                 Section("Diagnostics") {
@@ -130,6 +133,7 @@ struct SettingsView: View {
             instanceURL.trimmingCharacters(in: .whitespacesAndNewlines)
         SettingsStore.shared.token = token
         SettingsStore.shared.mergeGateMode = mergeGateMode
+        SettingsStore.shared.deleteBranchAfterMerge = deleteBranchAfterMerge
         dismiss()
     }
 }