Merge pull request 'fix: real-time provisioning status + disconnect handling' (#35) from schwifty/fix-provisioning-status into main

- DXSmartProvisioner now reports each phase (connecting, discovering
  services, authenticating, retrying) via onStatusUpdate callback
- ScanView shows live diagnostic log during connecting/writing states,
  not just on failure — so you can see exactly where it stalls
- Unexpected BLE disconnects now properly update provisioningState to
  .failed instead of silently logging
- Added cancel button to connecting progress view
- "Connected" screen title changed to "Connected — Beacon is Flashing"
  for clearer status indication

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

PayfritBeacon/Provisioners/DXSmartProvisioner.swift

@@ -55,15 +55,24 @@ final class DXSmartProvisioner: NSObject, BeaconProvisioner {
 
     // MARK: - BeaconProvisioner
 
+    /// Status callback — provisioner reports what phase it's in so UI can update
+    var onStatusUpdate: ((String) -> Void)?
+
     func connect() async throws {
         for attempt in 1...GATTConstants.maxRetries {
             await diagnosticLog?.log("connect", "Attempt \(attempt)/\(GATTConstants.maxRetries) — peripheral: \(peripheral.name ?? "unnamed"), state: \(peripheral.state.rawValue)")
             do {
+                let attemptLabel = GATTConstants.maxRetries > 1 ? " (attempt \(attempt)/\(GATTConstants.maxRetries))" : ""
+                await MainActor.run { onStatusUpdate?("Connecting to beacon…\(attemptLabel)") }
                 await diagnosticLog?.log("connect", "Connecting (timeout: \(GATTConstants.connectionTimeout)s)…")
                 try await connectOnce()
+
+                await MainActor.run { onStatusUpdate?("Discovering services…") }
                 await diagnosticLog?.log("connect", "Connected — discovering services…")
                 try await discoverServices()
                 await diagnosticLog?.log("connect", "Services found — FFE1:\(ffe1Char != nil) FFE2:\(ffe2Char != nil) FFE3:\(ffe3Char != nil)")
+
+                await MainActor.run { onStatusUpdate?("Authenticating…") }
                 await diagnosticLog?.log("auth", "Authenticating (trigger + password)…")
                 try await authenticate()
                 await diagnosticLog?.log("auth", "Auth complete — SDK: \(useNewSDK ? "new (FFE2)" : "old (FFE1)")")
@@ -74,6 +83,7 @@ final class DXSmartProvisioner: NSObject, BeaconProvisioner {
                 await diagnosticLog?.log("connect", "Attempt \(attempt) failed: \(error.localizedDescription)", isError: true)
                 disconnect()
                 if attempt < GATTConstants.maxRetries {
+                    await MainActor.run { onStatusUpdate?("Retrying… (\(attempt)/\(GATTConstants.maxRetries))") }
                     await diagnosticLog?.log("connect", "Retrying in \(GATTConstants.retryDelay)s…")
                     try await Task.sleep(nanoseconds: UInt64(GATTConstants.retryDelay * 1_000_000_000))
                 } else {

PayfritBeacon/Views/ScanView.swift

@@ -327,10 +327,10 @@ struct ScanView: View {
                 .foregroundStyle(Color.payfritGreen)
                 .modifier(PulseEffectModifier())
 
-            Text("Beacon is Flashing")
+            Text("Connected — Beacon is Flashing")
                 .font(.title2.bold())
 
-            Text("Confirm the beacon LED is flashing, then tap Write Config to program it.")
+            Text("Confirm the beacon LED is flashing, then tap Write Config to program it.\n\nThe beacon will timeout if you wait too long.")
                 .font(.subheadline)
                 .foregroundStyle(.secondary)
                 .multilineTextAlignment(.center)
@@ -355,6 +355,11 @@ struct ScanView: View {
             }
             .foregroundStyle(.secondary)
 
+            // Show diagnostic log
+            if !provisionLog.entries.isEmpty {
+                diagnosticLogView
+            }
+
             Spacer()
         }
     }
@@ -371,7 +376,58 @@ struct ScanView: View {
             Text(message)
                 .font(.subheadline)
                 .foregroundStyle(.secondary)
+
+            // Show live diagnostic log during connecting/writing
+            if !provisionLog.entries.isEmpty {
+                diagnosticLogView
+            }
+
             Spacer()
+
+            Button("Cancel") {
+                cancelProvisioning()
+            }
+            .foregroundStyle(.secondary)
+            .padding(.bottom, 16)
+        }
+    }
+
+    /// Reusable diagnostic log view
+    private var diagnosticLogView: some View {
+        VStack(alignment: .leading, spacing: 4) {
+            HStack {
+                Text("Log (\(provisionLog.elapsed))")
+                    .font(.caption.bold())
+                Spacer()
+                ShareLink(item: provisionLog.fullText) {
+                    Label("Share", systemImage: "square.and.arrow.up")
+                        .font(.caption)
+                }
+            }
+            .padding(.horizontal, 16)
+
+            ScrollViewReader { proxy in
+                ScrollView {
+                    LazyVStack(alignment: .leading, spacing: 2) {
+                        ForEach(provisionLog.entries) { entry in
+                            Text(entry.formatted)
+                                .font(.system(.caption2, design: .monospaced))
+                                .foregroundStyle(entry.isError ? Color.errorRed : .primary)
+                                .id(entry.id)
+                        }
+                    }
+                    .padding(.horizontal, 16)
+                }
+                .onChange(of: provisionLog.entries.count) { _ in
+                    if let last = provisionLog.entries.last {
+                        proxy.scrollTo(last.id, anchor: .bottom)
+                    }
+                }
+            }
+            .frame(maxHeight: 160)
+            .background(Color(.systemGray6))
+            .clipShape(RoundedRectangle(cornerRadius: 8))
+            .padding(.horizontal, 16)
         }
     }
 
@@ -411,33 +467,7 @@ struct ScanView: View {
 
             // Diagnostic log
             if !provisionLog.entries.isEmpty {
-                VStack(alignment: .leading, spacing: 4) {
-                    HStack {
-                        Text("Diagnostic Log (\(provisionLog.elapsed))")
-                            .font(.caption.bold())
-                        Spacer()
-                        ShareLink(item: provisionLog.fullText) {
-                            Label("Share", systemImage: "square.and.arrow.up")
-                                .font(.caption)
-                        }
-                    }
-                    .padding(.horizontal, 16)
-
-                    ScrollView {
-                        LazyVStack(alignment: .leading, spacing: 2) {
-                            ForEach(provisionLog.entries) { entry in
-                                Text(entry.formatted)
-                                    .font(.system(.caption2, design: .monospaced))
-                                    .foregroundStyle(entry.isError ? Color.errorRed : .primary)
-                            }
-                        }
-                        .padding(.horizontal, 16)
-                    }
-                    .frame(maxHeight: 200)
-                    .background(Color(.systemGray6))
-                    .clipShape(RoundedRectangle(cornerRadius: 8))
-                    .padding(.horizontal, 16)
-                }
+                diagnosticLogView
             }
 
             HStack(spacing: 16) {
@@ -556,7 +586,7 @@ struct ScanView: View {
               let token = appState.token else { return }
 
         provisioningState = .connecting
-        statusMessage = "Connecting to \(beacon.displayName)…"
+        statusMessage = "Allocating beacon config…"
         errorMessage = nil
         provisionLog.reset()
         provisionLog.log("init", "Starting provisioning: \(beacon.displayName) (\(beacon.type.rawValue)) RSSI:\(beacon.rssi)")
@@ -584,20 +614,34 @@ struct ScanView: View {
             // Create appropriate provisioner
             let provisioner = makeProvisioner(for: beacon)
 
-            statusMessage = "Authenticating with \(beacon.type.rawValue)…"
+            // Wire up real-time status updates from provisioner
+            if let dxProvisioner = provisioner as? DXSmartProvisioner {
+                dxProvisioner.onStatusUpdate = { [weak self] status in
+                    self?.statusMessage = status
+                }
+            }
+
+            statusMessage = "Connecting to \(beacon.displayName)…"
             provisionLog.log("connect", "Connecting to \(beacon.type.rawValue) provisioner…")
 
             // Monitor for unexpected disconnects during provisioning
             bleManager.onPeripheralDisconnected = { [weak provisionLog] peripheral, error in
                 if peripheral.identifier == beacon.peripheral.identifier {
-                    Task { @MainActor in
-                        provisionLog?.log("disconnect", "Unexpected disconnect: \(error?.localizedDescription ?? "no error")", isError: true)
+                    Task { @MainActor [weak self] in
+                        let reason = error?.localizedDescription ?? "beacon timed out"
+                        provisionLog?.log("disconnect", "Unexpected disconnect: \(reason)", isError: true)
+                        // If we're still in connecting or connected state, show failure
+                        if let self = self,
+                           self.provisioningState == .connecting || self.provisioningState == .connected {
+                            self.provisioningState = .failed
+                            self.errorMessage = "Beacon disconnected: \(reason)"
+                        }
                     }
                 }
             }
 
             try await provisioner.connect()
-            provisionLog.log("connect", "Connected successfully")
+            provisionLog.log("connect", "Connected and authenticated successfully")
 
             // DXSmart: stop at connected state, wait for user to confirm flashing
             if beacon.type == .dxsmart {