Match Apple Music: full-width tab bar + large title; bump to 2.5

- Bottom tab bar: replace the floating capsule (which had space below it and
  was too thin) with a full-width frosted-glass bar at the standard iOS tab
  bar height, sitting flush above the home indicator — matching Apple Music.
- Landing page title: use .large navigation title so 'Pull Requests' aligns at
  the top like Apple Music's 'Inicio', instead of the inline title.
- Bump to 2.5.

GiteaPR/Detail/PRDetailView.swift

@@ -130,18 +130,18 @@ struct PRDetailView: View {
         .background(Color(.secondarySystemBackground))
     }
 
-    /// Bottom tab bar: icon-only navigation between the PR's sections, in a
-    /// compact floating capsule style matching Apple's standard tab bar
-    /// height (Apple Music etc.), not a tall bar.
+    /// Bottom tab bar: full-width frosted-glass bar at the standard iOS tab
+    /// bar height, sitting flush above the home indicator — matching Apple
+    /// Music's tab bar (not a floating capsule with space below it).
     private var bottomTabBar: some View {
         HStack {
             ForEach(DetailTab.allCases) { tab in
                 Button {
                     selectedTab = tab
                 } label: {
-                    VStack(spacing: 1) {
+                    VStack(spacing: 2) {
                         Image(systemName: tab.icon)
-                            .font(.system(size: 18))
+                            .font(.system(size: 22))
                         Text(tab.rawValue)
                             .font(.caption2)
                     }
@@ -150,15 +150,9 @@ struct PRDetailView: View {
                 }
             }
         }
-        .padding(.vertical, 4)
-        .padding(.horizontal, 6)
-        .background(
-            Capsule()
-                .fill(.regularMaterial)
-                .shadow(color: .black.opacity(0.12), radius: 6, y: 1)
-        )
-        .padding(.horizontal, 16)
+        .padding(.top, 8)
         .padding(.bottom, 4)
+        .background(.bar)
     }
 
     private var reviewMenu: some View {

GiteaPR/Views/InboxView.swift

@@ -38,6 +38,7 @@ struct InboxView: View {
                 }
             }
             .navigationTitle("Pull Requests")
+            .navigationBarTitleDisplayMode(.large)
             .toolbar {
                 ToolbarItem(placement: .primaryAction) { settingsButton }
             }