macOS: Unobtrusive update views

macos/Sources/Features/Update/UpdatePill.swift

@@ -0,0 +1,51 @@
+import SwiftUI
+
+/// A pill-shaped button that displays update status and provides access to update actions.
+struct UpdatePill: View {
+    /// The update view model that provides the current state and information
+    @ObservedObject var model: UpdateViewModel
+    
+    /// The actions that can be performed on updates
+    let actions: UpdateUIActions
+    
+    /// Whether the update popover is currently visible
+    @State private var showPopover = false
+    
+    var body: some View {
+        if model.state != .idle {
+            VStack {
+                pillButton
+                Spacer()
+            }
+            .popover(isPresented: $showPopover, arrowEdge: .bottom) {
+                UpdatePopoverView(model: model, actions: actions)
+            }
+            .transition(.opacity.combined(with: .scale(scale: 0.95)))
+        }
+    }
+    
+    /// The pill-shaped button view that displays the update badge and text
+    @ViewBuilder
+    private var pillButton: some View {
+        Button(action: { showPopover.toggle() }) {
+            HStack(spacing: 6) {
+                UpdateBadge(model: model)
+                    .frame(width: 14, height: 14)
+                
+                Text(model.text)
+                    .font(.system(size: 11, weight: .medium))
+                    .lineLimit(1)
+            }
+            .padding(.horizontal, 8)
+            .padding(.vertical, 4)
+            .background(
+                Capsule()
+                    .fill(model.backgroundColor)
+            )
+            .foregroundColor(model.foregroundColor)
+            .contentShape(Capsule())
+        }
+        .buttonStyle(.plain)
+        .help(model.stateTooltip)
+    }
+}