Disable all input buttons on watch if data is stale/dated or session unreachable

Trio Watch App Extension/Helper/Helper+ButtonStyles.swift

@@ -5,6 +5,8 @@ struct WatchOSButtonStyle: ButtonStyle {
     var foregroundColor: Color = .white
     var fontSize: Font = .title2
 
+    @Environment(\.isEnabled) private var isEnabled: Bool
+
     private var fontWeight: Font.Weight {
         switch deviceType {
         case .watch40mm:
@@ -44,11 +46,19 @@ struct WatchOSButtonStyle: ButtonStyle {
     }
 
     func makeBody(configuration: Configuration) -> some View {
+        var buttonBackground: Color {
+            if isEnabled {
+                return Color.tabBar.opacity(configuration.isPressed ? 0.8 : 1.0)
+            } else {
+                return Color.tabBar.opacity(0.4)
+            }
+        }
+
         configuration.label
             .font(fontSize)
             .fontWeight(fontWeight)
             .padding(buttonPadding)
-            .background(Color.tabBar.opacity(configuration.isPressed ? 0.8 : 1.0))
+            .background(buttonBackground)
             .clipShape(Circle())
             .animation(.easeInOut(duration: 0.1), value: configuration.isPressed)
     }

Trio Watch App Extension/Views/BolusProgressOverlay.swift

@@ -16,6 +16,25 @@ struct BolusProgressOverlay: View {
         endPoint: .trailing
     )
 
+    private var isWatchStateDated: Bool {
+        // If `lastWatchStateUpdate` is nil, treat as "dated"
+        guard let lastUpdateTimestamp = state.lastWatchStateUpdate else {
+            return true
+        }
+        let now = Date().timeIntervalSince1970
+        let secondsSinceUpdate = now - lastUpdateTimestamp
+        // Return true if last update older than 5 min, so 1 loop cycle
+        return secondsSinceUpdate > 5 * 60
+    }
+
+    private var isSessionUnreachable: Bool {
+        guard let session = state.session else {
+            return true // No session at all => unreachable
+        }
+        // Return true if not .activated OR not reachable
+        return session.activationState != .activated
+    }
+
     var body: some View {
         VStack(spacing: 10) {
             VStack {
@@ -45,6 +64,7 @@ struct BolusProgressOverlay: View {
                 }
                 .buttonStyle(.bordered)
                 .padding()
+                .disabled(!isWatchStateDated || !isSessionUnreachable)
             }
             .padding()
             .background(Color.black.opacity(0.9))

Trio Watch App Extension/Views/TrioMainWatchView.swift

@@ -139,7 +139,9 @@ struct TrioMainWatchView: View {
                     } label: {
                         Image(systemName: "clock.arrow.2.circlepath")
                             .foregroundStyle(Color.primary, isOverrideActive ? Color.primary : Color.purple)
-                    }.tint(isOverrideActive ? Color.purple : nil)
+                    }
+                    .tint(isOverrideActive ? Color.purple : nil)
+                    .disabled(!isWatchStateDated || !isSessionUnreachable)
 
                     Button {
                         showingTreatmentMenuSheet = true
@@ -149,13 +151,16 @@ struct TrioMainWatchView: View {
                     }
                     .controlSize(.large)
                     .buttonStyle(WatchOSButtonStyle(deviceType: state.deviceType))
+                    .disabled(!isWatchStateDated || !isSessionUnreachable)
 
                     Button {
                         showingTempTargetSheet = true
                     } label: {
                         Image(systemName: "target")
                             .foregroundStyle(isTempTargetActive ? Color.primary : Color.loopGreen.opacity(0.75))
-                    }.tint(isTempTargetActive ? Color.loopGreen.opacity(0.75) : nil)
+                    }
+                    .tint(isTempTargetActive ? Color.loopGreen.opacity(0.75) : nil)
+                    .disabled(!isWatchStateDated || !isSessionUnreachable)
                 }
             }
             .fullScreenCover(isPresented: $showingTreatmentMenuSheet) {