perf: eliminate full rescans with local caches; add queue tracking, notifications, SyncView redesign

Cached indexes:
- NASManifestCache: actor-based disk cache for the NAS manifest (kisani_manifest_cache.json)
  Avoids NAS network round-trip when cache < 5 min old. Updated after every manifest download.
- LocalPhotoIndex: actor-based disk cache of phone asset metadata (kisani_local_index.json)
  Built once on first launch, then updated incrementally via PHPhotoLibraryChangeObserver.
  O(1) countSafe via in-memory dict (vs PHFetchResult batch enumeration + CoreData calls).

Fast path reconcile:
  When both caches are warm, reconcile() skips NAS connection + PHFetchResult enumeration
  entirely and returns in microseconds. Falls through to full NAS path only when stale.

AutoBackupCoordinator.onActive():
  Changed force: true → force: false so the 30-second debounce prevents expensive rescans
  on rapid app foreground/background cycles. Dashboard appears instantly from cached snapshot.

BackupQueueItem + queue tracking:
  BackupEngine publishes queueItems: [BackupQueueItem] with per-file status, progress,
  speed, error details. Queue is persisted to disk and reloaded on next launch so SyncView
  always has data to show even after restart.

NotificationService:
  Centralised local notification sender replacing the inline UNMutableNotificationContent
  blocks. Sends for: backup started, completed, failed, paused, NAS offline. Uses category
  identifiers so same-type notifications replace each other.

SyncView redesign:
  - Removed pill/chip around NAS IP — replaced with plain "Online/Offline/Checking" dot+text
  - No live NAS directory listing (was expensive NAS connection on every tab open)
  - Shows engine.queueItems grouped into Active / Failed / Completed sections
  - Per-file rows with inline progress bar + bytes/speed for uploading items, error text for failed
  - Idle state shows archive count from statusService snapshot

GalleryViewModel:
  NAS tab and All tab now use NASManifestCache as fallback when statusService.lastManifest
  is nil (offline launch). Gallery shows NAS items even when NAS is unreachable.

AppDelegate:
  Bootstraps LocalPhotoIndex.loadOrBuild() in background on launch (non-blocking).

Co-Authored-By: Kutesir <kutesir@provoc.ug>
Co-Authored-By: Sentry <sentry@provoc.ug>

App/AppDelegate.swift

@@ -11,6 +11,11 @@ final class AppDelegate: NSObject, UIApplicationDelegate {
         BackgroundTaskManager.registerTasks()
         requestNotificationPermission()
         setupLANMonitor()
+        // Bootstrap local indexes in the background — non-blocking.
+        // After first build they're loaded from disk in microseconds.
+        Task(priority: .utility) {
+            await LocalPhotoIndex.shared.loadOrBuild()
+        }
         return true
     }
 

Core/Models/BackupQueueItem.swift

@@ -0,0 +1,34 @@
+import Foundation
+
+struct BackupQueueItem: Identifiable, Codable, Sendable {
+    let id: String          // = asset localIdentifier
+    var filename: String
+    var nasPath: String
+    var status: Status
+    var bytesUploaded: Int64
+    var totalBytes: Int64
+    var speedBytesPerSec: Double
+    var error: UploadError?
+    var retryCount: Int
+    var queuedAt: Date
+    var completedAt: Date?
+
+    enum Status: String, Codable, Sendable {
+        case queued, uploading, uploaded, skipped, failed
+    }
+
+    struct UploadError: Codable, Sendable {
+        var code: String
+        var message: String
+        var timestamp: Date
+    }
+
+    var progress: Double {
+        guard totalBytes > 0 else {
+            return (status == .uploaded || status == .skipped) ? 1.0 : 0.0
+        }
+        return min(1.0, Double(bytesUploaded) / Double(totalBytes))
+    }
+
+    var isFinished: Bool { status == .uploaded || status == .skipped || status == .failed }
+}

Features/Browse/GalleryViewModel.swift

@@ -38,7 +38,16 @@ final class GalleryViewModel: ObservableObject {
         isLoading = true
         nasError = nil
 
-        let manifestEntries = statusService.lastManifest?.entries ?? []
+        // Prefer the in-memory lastManifest (most recent reconcile), fall back to
+        // disk-cached NASManifestCache (survives launches without NAS connection).
+        let manifestEntries: [ManifestEntry]
+        if let m = statusService.lastManifest {
+            manifestEntries = m.entries
+        } else if let cached = await NASManifestCache.shared.manifest {
+            manifestEntries = cached.entries
+        } else {
+            manifestEntries = []
+        }
 
         let phoneAssets = await Task.detached(priority: .userInitiated) {
             Self.fetchPhoneAssets()

Features/Sync/SyncView.swift

@@ -3,43 +3,175 @@ import SwiftUI
 struct SyncView: View {
     @EnvironmentObject var store: ConnectionStore
     @EnvironmentObject var lanMonitor: LANMonitor
-
-    @State private var files: [NASItem] = []
-    @State private var isLoading = false
-    @State private var error: String? = nil
-    @State private var appeared = false
+    @EnvironmentObject var engine: BackupEngine
+    @EnvironmentObject var statusService: BackupStatusService
 
     private var connection: NASConnection? { store.savedConnection }
+    private var queueItems: [BackupQueueItem] { engine.queueItems }
+
+    private var uploadingItems: [BackupQueueItem] { queueItems.filter { $0.status == .uploading } }
+    private var queuedItems:    [BackupQueueItem] { queueItems.filter { $0.status == .queued } }
+    private var completedItems: [BackupQueueItem] { queueItems.filter { $0.status == .uploaded || $0.status == .skipped } }
+    private var failedItems:    [BackupQueueItem] { queueItems.filter { $0.status == .failed } }
 
     var body: some View {
         ZStack {
             AppTheme.background.ignoresSafeArea()
-
             if connection == nil {
                 noConnectionState
-            } else if isLoading && files.isEmpty {
-                loadingState
-            } else if let err = error {
-                errorState(err)
-            } else if files.isEmpty && !isLoading {
-                emptyState
             } else {
-                fileList
+                contentList
             }
         }
         .navigationTitle("Sync")
         .navigationBarTitleDisplayMode(.inline)
-        .toolbar {
-            ToolbarItem(placement: .navigationBarTrailing) {
-                nasStatusChip
+    }
+
+    // MARK: — Main content
+
+    private var contentList: some View {
+        ScrollView {
+            LazyVStack(spacing: 0, pinnedViews: []) {
+                nasHeader
+                    .padding(.horizontal, AppTheme.hPad)
+                    .padding(.vertical, 14)
+
+                Divider()
+                    .padding(.horizontal, AppTheme.hPad)
+
+                if queueItems.isEmpty {
+                    idleState
+                        .padding(.top, 48)
+                } else {
+                    queueContent
+                }
+
+                freeUpSpaceSection
+                    .padding(.horizontal, AppTheme.hPad)
+                    .padding(.top, 32)
+                    .padding(.bottom, 48)
             }
         }
-        .task { await loadFiles() }
-        .refreshable { await loadFiles() }
+        .refreshable {
+            // Pull-to-refresh: show latest queue from engine (already live)
+        }
+    }
+
+    // MARK: — NAS header (no pill, no border)
+
+    private var nasHeader: some View {
+        HStack(alignment: .top) {
+            VStack(alignment: .leading, spacing: 3) {
+                if let conn = connection {
+                    Text(conn.host)
+                        .font(.system(size: 14, weight: .semibold))
+                        .foregroundStyle(AppTheme.ink)
+                    Text(conn.remotePath)
+                        .font(AppTheme.micro())
+                        .foregroundStyle(AppTheme.inkTertiary)
+                        .lineLimit(1)
+                    Text(conn.nasProtocol == .smb ? "SMB" : "SFTP")
+                        .font(.system(size: 10, weight: .medium))
+                        .foregroundStyle(AppTheme.inkQuaternary)
+                }
+            }
+            Spacer()
+            HStack(spacing: 5) {
+                Circle()
+                    .fill(nasColor)
+                    .frame(width: 6, height: 6)
+                    .animation(.spring(response: 0.3, dampingFraction: 0.8), value: lanMonitor.nasReachable)
+                Text(nasLabel)
+                    .font(.system(size: 12, weight: .medium))
+                    .foregroundStyle(nasColor)
+            }
+        }
+    }
+
+    private var nasColor: Color {
+        switch lanMonitor.nasReachable {
+        case true:  AppTheme.positive
+        case false: AppTheme.destructive.opacity(0.8)
+        case nil:   AppTheme.inkTertiary
+        }
+    }
+
+    private var nasLabel: String {
+        switch lanMonitor.nasReachable {
+        case true:  "Online"
+        case false: "Offline"
+        case nil:   "Checking…"
+        }
+    }
+
+    // MARK: — Queue content
+
+    @ViewBuilder
+    private var queueContent: some View {
+        // Active / uploading
+        if !uploadingItems.isEmpty || !queuedItems.isEmpty {
+            sectionHeader("ACTIVE", count: uploadingItems.count + queuedItems.count)
+            ForEach(uploadingItems + queuedItems) { item in
+                QueueFileRow(item: item)
+                Divider().padding(.leading, 58)
+            }
+        }
+
+        // Failed
+        if !failedItems.isEmpty {
+            sectionHeader("FAILED", count: failedItems.count)
+            ForEach(failedItems) { item in
+                QueueFileRow(item: item)
+                Divider().padding(.leading, 58)
+            }
+        }
+
+        // Completed
+        if !completedItems.isEmpty {
+            sectionHeader("COMPLETED", count: completedItems.count)
+            ForEach(completedItems.prefix(30)) { item in
+                QueueFileRow(item: item)
+                Divider().padding(.leading, 58)
+            }
+        }
+    }
+
+    private func sectionHeader(_ title: String, count: Int) -> some View {
+        HStack {
+            Text(title)
+                .font(.system(size: 10, weight: .semibold))
+                .foregroundStyle(AppTheme.inkTertiary)
+                .kerning(0.8)
+            Spacer()
+            Text("\(count)")
+                .font(AppTheme.micro())
+                .foregroundStyle(AppTheme.inkQuaternary)
+        }
+        .padding(.horizontal, AppTheme.hPad)
+        .padding(.top, 20)
+        .padding(.bottom, 6)
     }
 
     // MARK: — States
 
+    private var idleState: some View {
+        VStack(spacing: 14) {
+            Image(systemName: statusService.snapshot.alreadySafe > 0 ? "checkmark.circle" : "arrow.up.doc")
+                .font(.system(size: 32, weight: .ultraLight))
+                .foregroundStyle(AppTheme.inkQuaternary)
+            VStack(spacing: 5) {
+                Text(statusService.snapshot.alreadySafe > 0 ? "All caught up" : "No backup run yet")
+                    .font(.system(size: 15, weight: .medium))
+                    .foregroundStyle(AppTheme.inkSecondary)
+                if statusService.snapshot.nasArchiveTotal > 0 {
+                    Text("\(statusService.snapshot.nasArchiveTotal) files on NAS")
+                        .font(AppTheme.caption())
+                        .foregroundStyle(AppTheme.inkTertiary)
+                }
+            }
+        }
+    }
+
     private var noConnectionState: some View {
         VStack(spacing: 16) {
             Image(systemName: "externaldrive.badge.xmark")
@@ -49,184 +181,53 @@ struct SyncView: View {
                 Text("No NAS connected")
                     .font(.system(size: 15, weight: .medium))
                     .foregroundStyle(AppTheme.inkSecondary)
-                Text("Connect to a NAS to see synced files")
+                Text("Connect to a NAS to see sync activity")
                     .font(AppTheme.caption())
                     .foregroundStyle(AppTheme.inkTertiary)
             }
         }
     }
 
-    private var loadingState: some View {
-        VStack(spacing: 12) {
-            ProgressView().tint(AppTheme.inkTertiary)
-            Text("Loading files…")
-                .font(AppTheme.caption())
-                .foregroundStyle(AppTheme.inkTertiary)
-        }
-    }
-
-    private func errorState(_ message: String) -> some View {
-        VStack(spacing: 20) {
-            ZStack {
-                Circle().fill(AppTheme.surfaceSunken).frame(width: 64, height: 64)
-                Image(systemName: "wifi.exclamationmark")
-                    .font(.system(size: 24, weight: .light))
-                    .foregroundStyle(AppTheme.inkSecondary)
-            }
-            VStack(spacing: 6) {
-                Text("Couldn't load files")
-                    .font(.system(size: 15, weight: .semibold))
-                    .foregroundStyle(AppTheme.ink)
-                Text(message)
-                    .font(AppTheme.caption())
-                    .foregroundStyle(AppTheme.inkTertiary)
-                    .multilineTextAlignment(.center)
-                    .padding(.horizontal, 40)
-            }
-            Button(action: { Task { await loadFiles() } }) {
-                HStack(spacing: 5) {
-                    Image(systemName: "arrow.clockwise").font(.system(size: 12, weight: .medium))
-                    Text("Retry").font(.system(size: 13, weight: .medium))
-                }
-                .foregroundStyle(AppTheme.ink)
-                .padding(.horizontal, 16).padding(.vertical, 8)
-                .background(AppTheme.surfaceSunken)
-                .clipShape(RoundedRectangle(cornerRadius: 8, style: .continuous))
-            }
-            .buttonStyle(ScaleButtonStyle())
-        }
-    }
-
-    private var emptyState: some View {
-        VStack(spacing: 14) {
-            Image(systemName: "checkmark.circle")
-                .font(.system(size: 32, weight: .ultraLight))
-                .foregroundStyle(AppTheme.inkQuaternary)
-            VStack(spacing: 5) {
-                Text("Nothing backed up yet")
-                    .font(.system(size: 15, weight: .medium))
-                    .foregroundStyle(AppTheme.inkSecondary)
-                if let conn = connection {
-                    Text(conn.remotePath)
-                        .font(AppTheme.caption())
-                        .foregroundStyle(AppTheme.inkTertiary)
-                }
-            }
-        }
-    }
-
-    // MARK: — File list
-
-    private var fileList: some View {
-        ScrollView {
-            LazyVStack(spacing: 0) {
-                // Header strip
-                headerStrip
-                    .padding(.horizontal, AppTheme.hPad)
-                    .padding(.vertical, 14)
-
-                Rectangle()
-                    .fill(AppTheme.separator)
-                    .frame(height: 0.5)
-                    .padding(.horizontal, AppTheme.hPad)
-
-                ForEach(Array(files.enumerated()), id: \.element.id) { idx, file in
-                    SyncFileRow(item: file)
-                        .opacity(appeared ? 1 : 0)
-                        .offset(y: appeared ? 0 : 6)
-                        .animation(
-                            .spring(response: 0.38, dampingFraction: 0.82)
-                            .delay(Double(min(idx, 12)) * 0.03),
-                            value: appeared
-                        )
-
-                    if idx < files.count - 1 {
-                        Rectangle()
-                            .fill(AppTheme.separator)
-                            .frame(height: 0.5)
-                            .padding(.leading, 60)
-                    }
-                }
-
-                // Free Up Space section
-                freeUpSpaceSection
-                    .padding(.horizontal, AppTheme.hPad)
-                    .padding(.top, 28)
-                    .padding(.bottom, 48)
-            }
-        }
-        .onAppear { appeared = true }
-    }
-
-    private var headerStrip: some View {
-        HStack {
-            VStack(alignment: .leading, spacing: 3) {
-                Text("\(files.count) files backed up")
-                    .font(.system(size: 14, weight: .semibold))
-                    .foregroundStyle(AppTheme.ink)
-                if let conn = connection {
-                    Text(conn.remotePath)
-                        .font(AppTheme.micro())
-                        .foregroundStyle(AppTheme.inkTertiary)
-                        .lineLimit(1)
-                }
-            }
-            Spacer()
-            HStack(spacing: 5) {
-                Circle()
-                    .fill(reachableColor)
-                    .frame(width: 6, height: 6)
-                    .animation(.spring(response: 0.3, dampingFraction: 0.8), value: lanMonitor.nasReachable)
-                Text(reachableLabel)
-                    .font(AppTheme.micro())
-                    .foregroundStyle(reachableColor)
-                    .animation(.spring(response: 0.3, dampingFraction: 0.8), value: lanMonitor.nasReachable)
-            }
-        }
-    }
-
     // MARK: — Free Up Space
 
     private var freeUpSpaceSection: some View {
         VStack(alignment: .leading, spacing: 8) {
-            sectionLabel("FREE UP SPACE")
+            Text("FREE UP SPACE")
+                .font(.system(size: 10, weight: .semibold))
+                .foregroundStyle(AppTheme.inkTertiary)
+                .kerning(0.8)
+                .padding(.horizontal, 2)
 
             VStack(spacing: 0) {
-                // Explanation
                 HStack(spacing: 12) {
                     Image(systemName: "iphone.and.arrow.forward")
-                        .font(.system(size: 14, weight: .regular))
+                        .font(.system(size: 14))
                         .foregroundStyle(AppTheme.inkSecondary)
                         .frame(width: 20)
                     VStack(alignment: .leading, spacing: 2) {
                         Text("Delete local copies after backup")
                             .font(AppTheme.body())
                             .foregroundStyle(AppTheme.ink)
-                        Text("Photos and videos already on your NAS")
+                        Text("Files already on your NAS")
                             .font(AppTheme.caption())
                             .foregroundStyle(AppTheme.inkTertiary)
                     }
                     Spacer()
                 }
-                .padding(.horizontal, AppTheme.cardPad)
-                .padding(.vertical, 12)
+                .padding(AppTheme.cardPad)
 
-                Rectangle()
-                    .fill(AppTheme.separator)
-                    .frame(height: 0.5)
-                    .padding(.leading, AppTheme.cardPad)
+                Divider().padding(.leading, AppTheme.cardPad)
 
-                // Retention picker
                 HStack {
                     Text("Delete after")
                         .font(AppTheme.body())
                         .foregroundStyle(AppTheme.ink)
                     Spacer()
                     Menu {
-                        Button("Never (keep all)") { store.localRetentionDays = 0 }
-                        Button("After 60 days")    { store.localRetentionDays = 60 }
-                        Button("After 90 days")    { store.localRetentionDays = 90 }
-                        Button("After 1 year")     { store.localRetentionDays = 365 }
+                        Button("Never") { store.localRetentionDays = 0 }
+                        Button("60 days")  { store.localRetentionDays = 60 }
+                        Button("90 days")  { store.localRetentionDays = 90 }
+                        Button("1 year")   { store.localRetentionDays = 365 }
                     } label: {
                         HStack(spacing: 4) {
                             Text(retentionLabel)
@@ -238,172 +239,162 @@ struct SyncView: View {
                         }
                     }
                 }
-                .padding(.horizontal, AppTheme.cardPad)
-                .padding(.vertical, 12)
-
-                if store.localRetentionDays > 0 {
-                    Rectangle()
-                        .fill(AppTheme.separator)
-                        .frame(height: 0.5)
-                        .padding(.leading, AppTheme.cardPad)
-
-                    HStack(spacing: 8) {
-                        Image(systemName: "info.circle")
-                            .font(.system(size: 12, weight: .regular))
-                            .foregroundStyle(AppTheme.inkTertiary)
-                        Text("Files will be removed from this device \(retentionLabel.lowercased()) they were successfully backed up. They remain on your NAS.")
-                            .font(AppTheme.micro())
-                            .foregroundStyle(AppTheme.inkTertiary)
-                    }
-                    .padding(.horizontal, AppTheme.cardPad)
-                    .padding(.vertical, 10)
-                }
+                .padding(AppTheme.cardPad)
             }
             .background(AppTheme.surfaceRaised)
             .clipShape(RoundedRectangle(cornerRadius: AppTheme.radius, style: .continuous))
             .shadow(color: AppTheme.cardShadow, radius: 12, x: 0, y: 2)
-            .animation(.spring(response: 0.3, dampingFraction: 0.8), value: store.localRetentionDays > 0)
         }
     }
 
     private var retentionLabel: String {
         switch store.localRetentionDays {
-        case 0:   return "Never"
-        case 60:  return "60 days"
-        case 90:  return "90 days"
-        case 365: return "1 year"
-        default:  return "\(store.localRetentionDays) days"
+        case 0:   "Never"
+        case 60:  "60 days"
+        case 90:  "90 days"
+        case 365: "1 year"
+        default:  "\(store.localRetentionDays) days"
         }
     }
-
-    private var reachableColor: Color {
-        switch lanMonitor.nasReachable {
-        case true:  return AppTheme.positive
-        case false: return AppTheme.destructive.opacity(0.7)
-        case nil:   return AppTheme.inkQuaternary
-        }
-    }
-
-    private var reachableLabel: String {
-        switch lanMonitor.nasReachable {
-        case true:  return "Online"
-        case false: return "Offline"
-        case nil:   return "Checking…"
-        }
-    }
-
-    // MARK: — Toolbar chip
-
-    private var nasStatusChip: some View {
-        HStack(spacing: 5) {
-            Circle()
-                .fill(lanMonitor.nasReachable == true ? AppTheme.positive : AppTheme.inkQuaternary)
-                .frame(width: 5, height: 5)
-                .animation(.spring(response: 0.3, dampingFraction: 0.8), value: lanMonitor.nasReachable)
-            Text(connection?.host ?? "NAS")
-                .font(.system(size: 12, weight: .medium))
-                .foregroundStyle(AppTheme.inkSecondary)
-        }
-    }
-
-    // MARK: — Data
-
-    private func loadFiles() async {
-        guard let conn = connection else { return }
-        isLoading = true
-        error = nil
-        do {
-            let s: any NASTransferProtocol = conn.nasProtocol == .smb ? SMBService() : SFTPService()
-            try await s.connect(to: conn.host, port: conn.port,
-                                username: conn.username, password: conn.password)
-            files = try await s.listDirectory(at: conn.remotePath)
-                .filter { !$0.isDirectory }
-                .sorted { ($0.modifiedDate ?? .distantPast) > ($1.modifiedDate ?? .distantPast) }
-            s.disconnect()
-        } catch let e as BackupError {
-            self.error = e.errorDescription
-        } catch {
-            self.error = error.localizedDescription
-        }
-        isLoading = false
-    }
 }
 
-// MARK: — File Row
+// MARK: — Per-file row
 
-struct SyncFileRow: View {
-    let item: NASItem
+struct QueueFileRow: View {
+    let item: BackupQueueItem
 
-    private var ext: String { (item.name as NSString).pathExtension.lowercased() }
+    private var ext: String { (item.filename as NSString).pathExtension.lowercased() }
 
     private var fileIcon: String {
         switch ext {
-        case "jpg", "jpeg", "png", "heic", "heif", "gif", "webp": return "photo"
-        case "mp4", "mov", "m4v", "avi":                           return "play.rectangle"
-        case "raw", "dng", "cr2", "nef", "arw":                   return "camera.aperture"
-        case "pdf":                                                return "doc.richtext"
-        default:                                                   return "doc"
+        case "jpg","jpeg","png","heic","heif","gif","webp": "photo"
+        case "mp4","mov","m4v","avi":                       "play.rectangle"
+        case "raw","dng","cr2","nef","arw":                 "camera.aperture"
+        case "pdf":                                         "doc.richtext"
+        default:                                            "doc"
         }
     }
 
     private var iconColor: Color {
         switch ext {
-        case "jpg", "jpeg", "png", "heic", "heif", "gif", "webp": return AppTheme.interactive
-        case "mp4", "mov", "m4v", "avi":                           return AppTheme.destructive
-        case "raw", "dng", "cr2", "nef", "arw":                   return AppTheme.inkSecondary
-        default:                                                   return AppTheme.inkTertiary
+        case "jpg","jpeg","png","heic","heif","gif","webp": AppTheme.interactive
+        case "mp4","mov","m4v","avi":                       AppTheme.destructive
+        case "raw","dng","cr2","nef","arw":                 AppTheme.inkSecondary
+        default:                                            AppTheme.inkTertiary
         }
     }
 
     var body: some View {
+        VStack(spacing: 0) {
             HStack(spacing: 12) {
-            // File type icon
                 ZStack {
                     RoundedRectangle(cornerRadius: 8, style: .continuous)
                         .fill(iconColor.opacity(0.1))
                         .frame(width: 38, height: 38)
                     Image(systemName: fileIcon)
-                    .font(.system(size: 15, weight: .regular))
+                        .font(.system(size: 14, weight: .regular))
                         .foregroundStyle(iconColor)
                 }
 
-            // Name + meta
                 VStack(alignment: .leading, spacing: 3) {
-                Text(item.name)
-                    .font(.system(size: 14, weight: .regular))
+                    Text(item.filename)
+                        .font(.system(size: 13, weight: .regular))
                         .foregroundStyle(AppTheme.ink)
                         .lineLimit(1)
-
-                HStack(spacing: 6) {
-                    if let date = item.modifiedDate {
-                        Text(date, format: .dateTime.month(.abbreviated).day().year())
-                            .foregroundStyle(AppTheme.inkTertiary)
-                    }
-                    if item.size > 0 {
-                        Text("·").foregroundStyle(AppTheme.inkQuaternary)
-                        Text(formatBytes(item.size))
-                            .foregroundStyle(AppTheme.inkTertiary)
-                    }
-                }
-                .font(.system(size: 11, weight: .regular))
+                    statusRow
                 }
 
                 Spacer()
 
-            // Synced badge
-            Image(systemName: "checkmark.circle.fill")
-                .font(.system(size: 14))
-                .foregroundStyle(AppTheme.positive.opacity(0.7))
+                statusBadge
             }
             .padding(.horizontal, AppTheme.hPad)
-        .padding(.vertical, 11)
+            .padding(.vertical, 10)
+
+            // Progress bar for uploading
+            if item.status == .uploading && item.totalBytes > 0 {
+                GeometryReader { geo in
+                    ZStack(alignment: .leading) {
+                        Rectangle()
+                            .fill(AppTheme.surfaceSunken)
+                            .frame(height: 2)
+                        Rectangle()
+                            .fill(AppTheme.interactive)
+                            .frame(width: geo.size.width * CGFloat(item.progress), height: 2)
+                            .animation(.linear(duration: 0.1), value: item.progress)
+                    }
+                }
+                .frame(height: 2)
+                .padding(.horizontal, AppTheme.hPad)
+                .padding(.bottom, 8)
+            }
+        }
+    }
+
+    @ViewBuilder
+    private var statusRow: some View {
+        switch item.status {
+        case .uploading:
+            if item.totalBytes > 0 {
+                HStack(spacing: 4) {
+                    Text("\(formatBytes(item.bytesUploaded)) / \(formatBytes(item.totalBytes))")
+                    if item.speedBytesPerSec > 0 {
+                        Text("·")
+                        Text("\(formatBytes(Int64(item.speedBytesPerSec)))/s")
+                    }
+                }
+                .font(.system(size: 11, weight: .regular))
+                .foregroundStyle(AppTheme.inkTertiary)
+            } else {
+                Text("Uploading…")
+                    .font(.system(size: 11)).foregroundStyle(AppTheme.inkTertiary)
+            }
+        case .queued:
+            Text("Queued")
+                .font(.system(size: 11)).foregroundStyle(AppTheme.inkTertiary)
+        case .uploaded, .skipped:
+            if let date = item.completedAt {
+                Text(date, format: .dateTime.month(.abbreviated).day().hour().minute())
+                    .font(.system(size: 11)).foregroundStyle(AppTheme.inkTertiary)
+            }
+        case .failed:
+            Text(item.error?.message ?? "Upload failed")
+                .font(.system(size: 11))
+                .foregroundStyle(AppTheme.destructive.opacity(0.85))
+                .lineLimit(1)
+        }
+    }
+
+    @ViewBuilder
+    private var statusBadge: some View {
+        switch item.status {
+        case .uploading:
+            ProgressView()
+                .scaleEffect(0.7)
+                .tint(AppTheme.interactive)
+        case .queued:
+            Image(systemName: "clock")
+                .font(.system(size: 13))
+                .foregroundStyle(AppTheme.inkQuaternary)
+        case .uploaded:
+            Image(systemName: "checkmark.circle.fill")
+                .font(.system(size: 15))
+                .foregroundStyle(AppTheme.positive.opacity(0.8))
+        case .skipped:
+            Image(systemName: "arrow.forward.circle")
+                .font(.system(size: 15))
+                .foregroundStyle(AppTheme.inkTertiary)
+        case .failed:
+            Image(systemName: "xmark.circle.fill")
+                .font(.system(size: 15))
+                .foregroundStyle(AppTheme.destructive.opacity(0.8))
+        }
     }
 
     private func formatBytes(_ bytes: Int64) -> String {
-        let gb = Double(bytes) / 1_073_741_824
-        if gb >= 1 { return String(format: "%.1f GB", gb) }
         let mb = Double(bytes) / 1_048_576
-        if mb >= 1 { return String(format: "%.0f MB", mb) }
-        return String(format: "%.0f KB", Double(bytes) / 1024)
+        if mb < 1 { return "\(max(0, bytes / 1024)) KB" }
+        if mb < 1000 { return String(format: "%.1f MB", mb) }
+        return String(format: "%.1f GB", mb / 1024)
     }
 }

Kisani.xcodeproj/project.pbxproj

@@ -21,6 +21,7 @@
 		19CB72B2DCA08EC8C8EB3103 /* UGreenCompatibilityBadge.swift in Sources */ = {isa = PBXBuildFile; fileRef = 63B4A0DF226AB4C5EE9E0D16 /* UGreenCompatibilityBadge.swift */; };
 		1AEF3190A6F5D3AB43CC521D /* BackupEngineTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 35A5F6ABBD052F931949B2FA /* BackupEngineTests.swift */; };
 		20F9E76FDA60BA806980E44A /* ToggleRow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 674029116718AB4525AD9450 /* ToggleRow.swift */; };
+		210BF39897CC8E966A72698C /* BackupQueueItem.swift in Sources */ = {isa = PBXBuildFile; fileRef = EF4EDDA4B02ABF0F17BE86D5 /* BackupQueueItem.swift */; };
 		218313D06E536CC541620B1A /* GalleryDetailView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 18ADB8B4D428026420CCA46B /* GalleryDetailView.swift */; };
 		24B0F2FC039AF5898BF3ADAE /* Date+.swift in Sources */ = {isa = PBXBuildFile; fileRef = 57448AD7D80B10985B8A222B /* Date+.swift */; };
 		280D31F6A61529FB13A06EA4 /* SMBClient in Frameworks */ = {isa = PBXBuildFile; productRef = BD0A57EC048DFE706E440152 /* SMBClient */; };
@@ -50,6 +51,7 @@
 		8CA733E7E328A54503A06728 /* ConnectionStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = 101678CDEDFF343DCC880C2F /* ConnectionStore.swift */; };
 		957976696AD0F01A7BA054DE /* BackgroundTaskManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8AC6E57C1203C70B43C3A789 /* BackgroundTaskManager.swift */; };
 		97E28F8EF7418C7D7A4797B1 /* AppTheme.swift in Sources */ = {isa = PBXBuildFile; fileRef = E309F9924060F6C3C2FE36D4 /* AppTheme.swift */; };
+		9B1A3CDC25CC5F058086A08E /* NASManifestCache.swift in Sources */ = {isa = PBXBuildFile; fileRef = E317DD286568B85367A66AD3 /* NASManifestCache.swift */; };
 		A12ED84B089F39AF5A26F246 /* PhotoLibraryService.swift in Sources */ = {isa = PBXBuildFile; fileRef = FDB76E9F93340DD33C5572DB /* PhotoLibraryService.swift */; };
 		A30DD79EAA22C33F029FE4E4 /* LANTriggerSection.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84D7C31A6C73BBF5B8CBDCF2 /* LANTriggerSection.swift */; };
 		A43FF80A5C7FC09E07294B60 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 628B4A8E8DDB28CDF5AE4284 /* AppDelegate.swift */; };
@@ -60,8 +62,10 @@
 		C172F81135C5C7EDBED90E98 /* MainTabView.swift in Sources */ = {isa = PBXBuildFile; fileRef = B3306187119851CE3E989408 /* MainTabView.swift */; };
 		D18F0F1DCFEB945F2AD6DC20 /* ConnectView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C29AB7B029DBC37E189C81D6 /* ConnectView.swift */; };
 		D2EB2844309ECB331955F2A9 /* SFTPService.swift in Sources */ = {isa = PBXBuildFile; fileRef = EF029B56DE72F2D5D7977D95 /* SFTPService.swift */; };
+		D3CEB99B305997997AFEE0D9 /* NotificationService.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2145CC30FC82AE2E0703EBCE /* NotificationService.swift */; };
 		D7C3444EF261573E590725E9 /* MockNASService.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2B1138B91494A6B3BF4515C0 /* MockNASService.swift */; };
 		D8247C4721601698EB006C86 /* GalleryItem.swift in Sources */ = {isa = PBXBuildFile; fileRef = CEE62B5210F46415531D531D /* GalleryItem.swift */; };
+		D917AA4FEDD50459938E7CD3 /* LocalPhotoIndex.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5E0B91084FBA758D1963CB1E /* LocalPhotoIndex.swift */; };
 		E6E8A98506D79BB36771FA16 /* GalleryView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1AB509370FEEE38EA8732FDE /* GalleryView.swift */; };
 		EAD70575AAC91030698676E1 /* KisaniLogoMark.swift in Sources */ = {isa = PBXBuildFile; fileRef = F0987D44494F1385E8D4876F /* KisaniLogoMark.swift */; };
 		EE8AE9228AC7BA87E0985BDF /* PrivacyInfo.xcprivacy in Resources */ = {isa = PBXBuildFile; fileRef = A1DAA26CE0A4DFFDD90370F2 /* PrivacyInfo.xcprivacy */; };
@@ -87,6 +91,7 @@
 		18ADB8B4D428026420CCA46B /* GalleryDetailView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GalleryDetailView.swift; sourceTree = "<group>"; };
 		1AB509370FEEE38EA8732FDE /* GalleryView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GalleryView.swift; sourceTree = "<group>"; };
 		1AF29317285580DD2246F54F /* ThumbnailCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThumbnailCache.swift; sourceTree = "<group>"; };
+		2145CC30FC82AE2E0703EBCE /* NotificationService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationService.swift; sourceTree = "<group>"; };
 		22BF6D1FB493F75096805690 /* FolderSetupView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FolderSetupView.swift; sourceTree = "<group>"; };
 		248BF8DA762BB74955255511 /* ConnectViewModelTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConnectViewModelTests.swift; sourceTree = "<group>"; };
 		2B1138B91494A6B3BF4515C0 /* MockNASService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MockNASService.swift; sourceTree = "<group>"; };
@@ -103,6 +108,7 @@
 		4512EE2A2DE276DB46690E06 /* ButtonStyles.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ButtonStyles.swift; sourceTree = "<group>"; };
 		57448AD7D80B10985B8A222B /* Date+.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Date+.swift"; sourceTree = "<group>"; };
 		5AA5C090CF766ED8E3AF77D1 /* KeychainStore.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = KeychainStore.swift; sourceTree = "<group>"; };
+		5E0B91084FBA758D1963CB1E /* LocalPhotoIndex.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocalPhotoIndex.swift; sourceTree = "<group>"; };
 		6004FE7B107CC60894EDC434 /* BrowseView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrowseView.swift; sourceTree = "<group>"; };
 		628B4A8E8DDB28CDF5AE4284 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		63B4A0DF226AB4C5EE9E0D16 /* UGreenCompatibilityBadge.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UGreenCompatibilityBadge.swift; sourceTree = "<group>"; };
@@ -130,10 +136,12 @@
 		DAF503BCE3AEDC25F4D35083 /* NASConnection.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NASConnection.swift; sourceTree = "<group>"; };
 		DEFC3DC5AA3C7B7258C9155A /* BackupJob.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BackupJob.swift; sourceTree = "<group>"; };
 		E309F9924060F6C3C2FE36D4 /* AppTheme.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppTheme.swift; sourceTree = "<group>"; };
+		E317DD286568B85367A66AD3 /* NASManifestCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NASManifestCache.swift; sourceTree = "<group>"; };
 		E956B8562EDB9259034CF8FF /* AppMenuView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppMenuView.swift; sourceTree = "<group>"; };
 		E987653F4F7129568656EFDE /* BackupResult.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BackupResult.swift; sourceTree = "<group>"; };
 		ED5F358675A200A5C0FF2289 /* NASBackup.app */ = {isa = PBXFileReference; includeInIndex = 0; lastKnownFileType = wrapper.application; path = NASBackup.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		EF029B56DE72F2D5D7977D95 /* SFTPService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SFTPService.swift; sourceTree = "<group>"; };
+		EF4EDDA4B02ABF0F17BE86D5 /* BackupQueueItem.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BackupQueueItem.swift; sourceTree = "<group>"; };
 		F052EE8B0A757532E4BCBCCD /* LoginView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoginView.swift; sourceTree = "<group>"; };
 		F0987D44494F1385E8D4876F /* KisaniLogoMark.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = KisaniLogoMark.swift; sourceTree = "<group>"; };
 		F13BE4A26BEF38CE3043CBB5 /* FolderRow.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FolderRow.swift; sourceTree = "<group>"; };
@@ -244,6 +252,7 @@
 			children = (
 				DEFC3DC5AA3C7B7258C9155A /* BackupJob.swift */,
 				966927456571CE45600BEF75 /* BackupManifest.swift */,
+				EF4EDDA4B02ABF0F17BE86D5 /* BackupQueueItem.swift */,
 				E987653F4F7129568656EFDE /* BackupResult.swift */,
 				2EDEAE39E0AFC06D0C169589 /* BackupStatusSnapshot.swift */,
 				CEE62B5210F46415531D531D /* GalleryItem.swift */,
@@ -260,6 +269,9 @@
 				75FEBDDA82656772FE30609D /* BackupEngine.swift */,
 				FC516E4CBDFA09B6D04937D6 /* BackupStatusService.swift */,
 				D008AD85FA9B690DAFECCC34 /* LANMonitor.swift */,
+				5E0B91084FBA758D1963CB1E /* LocalPhotoIndex.swift */,
+				E317DD286568B85367A66AD3 /* NASManifestCache.swift */,
+				2145CC30FC82AE2E0703EBCE /* NotificationService.swift */,
 				FDB76E9F93340DD33C5572DB /* PhotoLibraryService.swift */,
 				EF029B56DE72F2D5D7977D95 /* SFTPService.swift */,
 				3E4F11D9683F64A06B855649 /* SMBService.swift */,
@@ -509,6 +521,7 @@
 				67149DE0D19696D9327AEBAB /* BackupError.swift in Sources */,
 				42BF90A0F061C3183D5FD5D4 /* BackupJob.swift in Sources */,
 				0E446A91CD30C2905B8E215F /* BackupManifest.swift in Sources */,
+				210BF39897CC8E966A72698C /* BackupQueueItem.swift in Sources */,
 				48A1C445346B6E84BB4955D3 /* BackupResult.swift in Sources */,
 				3C588AE6212D742D71A67A4C /* BackupStatusService.swift in Sources */,
 				405026F5EC0DD0D4CC636F0F /* BackupStatusSnapshot.swift in Sources */,
@@ -531,12 +544,15 @@
 				EAD70575AAC91030698676E1 /* KisaniLogoMark.swift in Sources */,
 				42CB7416A94CFEBC290D0E49 /* LANMonitor.swift in Sources */,
 				A30DD79EAA22C33F029FE4E4 /* LANTriggerSection.swift in Sources */,
+				D917AA4FEDD50459938E7CD3 /* LocalPhotoIndex.swift in Sources */,
 				0E4948C8E3326DF859341942 /* LoginView.swift in Sources */,
 				F5ED0D561D6F61180B4672FA /* LoginViewModel.swift in Sources */,
 				C172F81135C5C7EDBED90E98 /* MainTabView.swift in Sources */,
 				6A0D1B9133CBA5CBE403AB6A /* NASBackupApp.swift in Sources */,
 				01610BD782FA7F00787E8CB5 /* NASConnection.swift in Sources */,
+				9B1A3CDC25CC5F058086A08E /* NASManifestCache.swift in Sources */,
 				6D7C0DABECF5694E95B1F2F9 /* NASTransferProtocol.swift in Sources */,
+				D3CEB99B305997997AFEE0D9 /* NotificationService.swift in Sources */,
 				1157E530A5E3EC4563D20C32 /* PHAsset+.swift in Sources */,
 				0555485F0FD9D1D724B98B0D /* PhotoLibraryProtocol.swift in Sources */,
 				A12ED84B089F39AF5A26F246 /* PhotoLibraryService.swift in Sources */,

Services/AutoBackupCoordinator.swift

@@ -71,9 +71,12 @@ final class AutoBackupCoordinator: ObservableObject {
     func onActive() {
         guard !engine.job.status.isActive else { return }
         guard store.savedConnection != nil else { return }
+        guard phase == .idle else { return }  // Don't interrupt an in-progress check
         phase = .checking
-        statusService.refresh(force: true)
-        // handleReconciliationComplete() fires via Combine when the refresh settles
+        // force: false — BackupStatusService's 30-second debounce prevents expensive
+        // rescans on rapid foreground/background cycles. The cached snapshot is shown
+        // immediately; reconciliation only runs when truly stale.
+        statusService.refresh(force: false)
     }
 
     // MARK: — Combine handlers

Services/BackupEngine.swift

@@ -1,5 +1,4 @@
 import Foundation
-import UserNotifications
 import Photos
 import os.log
 
@@ -11,12 +10,18 @@ final class BackupEngine: ObservableObject {
     static let shared = BackupEngine()
 
     @Published private(set) var job: BackupJob = BackupJob()
+    @Published private(set) var queueItems: [BackupQueueItem] = []
 
     private let photoService: PhotoLibraryProtocol
     private let transferFactory: (NASProtocol) -> any NASTransferProtocol
     private var activeTransfer: (any NASTransferProtocol)?
     private var isCancelled = false
 
+    private static let queueCacheURL: URL = {
+        let caches = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)[0]
+        return caches.appendingPathComponent("kisani_last_queue.json")
+    }()
+
     private init(
         photos: PhotoLibraryProtocol = PhotoLibraryService(),
         transferFactory: @escaping (NASProtocol) -> any NASTransferProtocol = { proto in
@@ -28,6 +33,11 @@ final class BackupEngine: ObservableObject {
     ) {
         self.photoService = photos
         self.transferFactory = transferFactory
+        // Load last session's queue so SyncView has data to show on next launch.
+        if let data = try? Data(contentsOf: Self.queueCacheURL),
+           let items = try? JSONDecoder.kisani.decode([BackupQueueItem].self, from: data) {
+            self.queueItems = items
+        }
     }
 
     static func testInstance(
@@ -121,10 +131,19 @@ final class BackupEngine: ObservableObject {
         }
 
         // ── 5. Upload loop ─────────────────────────────────────────────────
-        // The main actor is released at every `await`. Progress UI is throttled
-        // to 8 Hz — without throttling, one Task { @MainActor } is fired per
-        // progress callback which causes continuous SwiftUI full-tree re-renders.
         job.start(totalFiles: pendingAssets.count, totalBytes: 0)
+        NotificationService.notifyBackupStarted(count: pendingAssets.count)
+
+        // Build initial queue (all queued) for SyncView
+        queueItems = pendingAssets.map { asset in
+            BackupQueueItem(
+                id: asset.localIdentifier,
+                filename: asset.filename,
+                nasPath: "\(connection.remotePath)/\(asset.filename)",
+                status: .queued, bytesUploaded: 0, totalBytes: 0, speedBytesPerSec: 0,
+                error: nil, retryCount: 0, queuedAt: Date(), completedAt: nil
+            )
+        }
 
         var uploaded = 0
         var skipped  = 0
@@ -137,7 +156,7 @@ final class BackupEngine: ObservableObject {
 
         let spUpload = signposter.beginInterval("UploadLoop", "\(pendingAssets.count) files")
 
-        for asset in pendingAssets {
+        for (assetIdx, asset) in pendingAssets.enumerated() {
             if isCancelled { break }
             while case .paused = job.status {
                 try await Task.sleep(nanoseconds: 500_000_000)
@@ -145,9 +164,18 @@ final class BackupEngine: ObservableObject {
 
             let remotePath = "\(connection.remotePath)/\(asset.filename)"
 
+            // Mark as uploading
+            if assetIdx < queueItems.count {
+                queueItems[assetIdx].status = .uploading
+            }
+
             if (try? await transfer.fileExists(at: remotePath)) == true {
                 job.fileCompleted(skipped: true)
                 skipped += 1
+                if assetIdx < queueItems.count {
+                    queueItems[assetIdx].status = .skipped
+                    queueItems[assetIdx].completedAt = Date()
+                }
                 logger.debug("Skipped (NAS exists): \(asset.filename, privacy: .public)")
                 continue
             }
@@ -160,20 +188,28 @@ final class BackupEngine: ObservableObject {
 
                 let fileSize = (try? localURL.resourceValues(forKeys: [.fileSizeKey]).fileSize)
                     .flatMap { Int64($0) } ?? 0
-                // Capture totalBytes by value so the progress closure doesn't capture
-                // the mutable var — avoids a data race warning and is semantically correct.
                 let bytesSoFar = totalBytes
+                let capturedIdx = assetIdx
+
+                if capturedIdx < queueItems.count {
+                    queueItems[capturedIdx].totalBytes = fileSize
+                }
 
                 try await transfer.upload(localURL: localURL, remotePath: remotePath) { sent, _ in
                     let speed = speedTracker.update(bytesSent: sent)
                     guard throttle.shouldUpdate() else { return }
                     Task { @MainActor [weak self] in
-                        self?.job.updateProgress(
+                        guard let self else { return }
+                        self.job.updateProgress(
                             fileName: asset.filename,
                             fileSize: fileSize,
                             bytesTransferred: bytesSoFar + sent,
                             speed: speed
                         )
+                        if capturedIdx < self.queueItems.count {
+                            self.queueItems[capturedIdx].bytesUploaded = sent
+                            self.queueItems[capturedIdx].speedBytesPerSec = speed
+                        }
                     }
                 }
 
@@ -182,6 +218,12 @@ final class BackupEngine: ObservableObject {
                 job.fileCompleted(skipped: false)
                 uploaded += 1
 
+                if assetIdx < queueItems.count {
+                    queueItems[assetIdx].status = .uploaded
+                    queueItems[assetIdx].bytesUploaded = fileSize
+                    queueItems[assetIdx].completedAt = Date()
+                }
+
                 manifestEntries.append(ManifestEntry(
                     localIdentifier: asset.localIdentifier,
                     filename: asset.filename,
@@ -194,6 +236,15 @@ final class BackupEngine: ObservableObject {
                 logger.error("Upload failed for \(asset.filename, privacy: .public): \(error.localizedDescription, privacy: .public)")
                 job.fileFailed()
                 failed += 1
+                if assetIdx < queueItems.count {
+                    queueItems[assetIdx].status = .failed
+                    queueItems[assetIdx].completedAt = Date()
+                    queueItems[assetIdx].error = BackupQueueItem.UploadError(
+                        code: (error as NSError).domain,
+                        message: error.localizedDescription,
+                        timestamp: Date()
+                    )
+                }
             }
         }
 
@@ -214,7 +265,23 @@ final class BackupEngine: ObservableObject {
 
         let entry = BackupHistoryEntry(result: result, nasHost: host, triggeredByLAN: triggeredByLAN)
         store.appendHistoryEntry(entry)
-        await sendCompletionNotification(result: result)
+
+        // Notifications
+        if result.failedCount > 0 {
+            NotificationService.notifyBackupFailed(count: result.failedCount)
+        } else {
+            NotificationService.notifyBackupCompleted(
+                uploaded: result.uploadedCount,
+                total: BackupStatusService.shared.snapshot.phoneTotal
+            )
+        }
+
+        // Persist queue so SyncView shows last session on next launch
+        let snapshot = queueItems
+        Task.detached(priority: .utility) { [snapshot, url = Self.queueCacheURL] in
+            guard let data = try? JSONEncoder.kisani.encode(snapshot) else { return }
+            try? data.write(to: url, options: .atomic)
+        }
 
         return result
     }
@@ -235,14 +302,6 @@ final class BackupEngine: ObservableObject {
 
     func resolveSuccess() { job.resolveSuccess() }
 
-    private func sendCompletionNotification(result: BackupResult) async {
-        let content = UNMutableNotificationContent()
-        content.title = result.hasErrors ? "Backup completed with errors" : "Backup complete"
-        content.body = "\(result.uploadedCount) uploaded · \(result.skippedCount) skipped · \(result.failedCount) errors"
-        content.sound = .default
-        let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil)
-        try? await UNUserNotificationCenter.current().add(request)
-    }
 }
 
 // MARK: — SpeedTracker

Services/BackupStatusService.swift

@@ -129,9 +129,35 @@ final class BackupStatusService: NSObject, ObservableObject {
         let store = ConnectionStore.shared
         guard let conn = store.savedConnection else { return }
 
-        // ── Step 1: Phone count ───────────────────────────────────────────
-        // PHFetchResult.count is O(1) after the initial index build — fast on main actor.
         let filter = store.backupFilter
+
+        // ── Fast path: use local caches when both are warm ────────────────
+        // Skips NAS connection + PHFetchResult batch enumeration entirely.
+        // Triggered when: manifest cache < 5 min old AND LocalPhotoIndex has data.
+        let manifestCacheIsStale = await NASManifestCache.shared.isStale
+        let localIndexCount = await LocalPhotoIndex.shared.totalCount
+
+        if !manifestCacheIsStale, let cached = await NASManifestCache.shared.manifest, localIndexCount > 0 {
+            let index = await Task.detached(priority: .utility) {
+                ManifestIndex(manifest: cached)
+            }.value
+            let safe = await LocalPhotoIndex.shared.countSafe(against: index, filter: filter)
+            let phoneTotal = await LocalPhotoIndex.shared.totalCount
+            var updated = BackupStatusSnapshot()
+            updated.phoneTotal      = phoneTotal
+            updated.alreadySafe     = min(safe, phoneTotal)
+            updated.nasArchiveTotal = index.totalCount
+            updated.connectionState = .connected
+            updated.lastCheckedAt   = Date()
+            snapshot = updated
+            saveSnapshot()
+            log.info("Reconcile (cached): \(phoneTotal) phone, \(safe) safe, \(index.totalCount) NAS")
+            return
+        }
+
+        // ── Full path: connect to NAS and download fresh manifest ─────────
+
+        // Step 1: Phone count (O(1) PHFetchResult.count)
         let fetchResult = photoService.fetchResultForReconciliation(filter: filter)
         let phoneTotal = fetchResult.count
         log.info("PHFetchResult count: \(phoneTotal)")
@@ -159,27 +185,29 @@ final class BackupStatusService: NSObject, ObservableObject {
         try Task.checkCancellation()
 
         // ── Step 3: Load ManifestIndex ────────────────────────────────────
-        // Download suspends main actor (good). JSON decode + Set<String> construction
-        // is CPU-bound O(N) — runs in a background task so touch/animation remain smooth.
         let spManifest = signposter.beginInterval("ManifestLoad")
         let manifestPath = "\(conn.remotePath)/\(BackupManifest.remoteFilename)"
         let index = await buildManifestIndex(transfer: transfer, path: manifestPath, conn: conn)
         signposter.endInterval("ManifestLoad", spManifest,
                                "\(index.totalCount) entries, filename-only=\(index.isFilenameOnly)")
-        log.info("Manifest index built — \(index.totalCount) NAS entries, filename-only=\(index.isFilenameOnly)")
+        log.info("Manifest index built — \(index.totalCount) NAS entries")
 
         try Task.checkCancellation()
 
-        // ── Step 4: Count safe assets — off main actor ────────────────────
-        // Batch enumeration of PHFetchResult is CPU-bound (up to N/150 batches).
-        // Running it in a detached task keeps the main thread free for the UI
-        // while the count is in progress. Task.yield() inside countSafe lets other
-        // async work interleave between batches.
+        // ── Step 4: Count safe assets ─────────────────────────────────────
+        // Prefer LocalPhotoIndex (pure in-memory, no CoreData) if populated;
+        // otherwise fall back to batch PHFetchResult enumeration.
         let spCount = signposter.beginInterval("CountSafe")
-        let safe = try await Task.detached(priority: .userInitiated) { [weak self, fetchResult, index] in
+        let localCount = await LocalPhotoIndex.shared.totalCount
+        let safe: Int
+        if localCount > 0 {
+            safe = await LocalPhotoIndex.shared.countSafe(against: index, filter: filter)
+        } else {
+            safe = try await Task.detached(priority: .userInitiated) { [weak self, fetchResult, index] in
                 guard let self else { throw CancellationError() }
                 return try await self.countSafe(in: fetchResult, against: index)
             }.value
+        }
         signposter.endInterval("CountSafe", spCount, "\(safe)/\(phoneTotal) safe")
         log.info("Comparison complete — \(safe)/\(phoneTotal) already safe")
 
@@ -212,6 +240,8 @@ final class BackupStatusService: NSObject, ObservableObject {
             }.value
             if let (index, manifest) = decoded {
                 lastManifest = manifest
+                // Persist to local cache so future launches skip the NAS round-trip.
+                Task { await NASManifestCache.shared.update(manifest) }
                 return index
             }
         } catch {
@@ -346,6 +376,20 @@ final class BackupStatusService: NSObject, ObservableObject {
 
 extension BackupStatusService: PHPhotoLibraryChangeObserver {
     nonisolated func photoLibraryDidChange(_ changeInstance: PHChange) {
+        // Update LocalPhotoIndex incrementally — avoids full rebuild on every change.
+        // We need the fetch result for change details; rebuild from scratch if unavailable.
+        Task(priority: .utility) {
+            let opts = PHFetchOptions()
+            let allAssets = PHAsset.fetchAssets(with: opts)
+            if let details = changeInstance.changeDetails(for: allAssets) {
+                await LocalPhotoIndex.shared.apply(
+                    inserted: details.insertedObjects,
+                    removed:  details.removedObjects,
+                    changed:  details.changedObjects
+                )
+                await LocalPhotoIndex.shared.flush()
+            }
+        }
         Task { @MainActor [weak self] in
             guard let self else { return }
             self.debounceTask?.cancel()

Services/LocalPhotoIndex.swift

@@ -0,0 +1,163 @@
+import Foundation
+import Photos
+import os.log
+
+private let log = Logger(subsystem: "com.albert.nasbackup", category: "LocalPhotoIndex")
+
+/// On-device index of phone asset metadata — eliminates full PHFetchResult
+/// enumeration for status counts after the initial build.
+///
+/// Build cost: O(N) on first launch, then zero on every subsequent open.
+/// Update cost: O(changed) via PHPhotoLibraryChangeObserver.
+/// Memory: ~100 bytes × asset count (≈1 MB for 10 k photos).
+actor LocalPhotoIndex {
+    static let shared = LocalPhotoIndex()
+
+    struct Record: Codable, Sendable {
+        let localIdentifier: String
+        var filename: String
+        var creationDate: Date?
+        var mediaType: Int        // PHAssetMediaType.rawValue
+        var isScreenshot: Bool
+        var isRAW: Bool
+    }
+
+    private var records: [String: Record] = [:]
+    private let diskURL: URL
+    private var needsSave = false
+
+    private init() {
+        let caches = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)[0]
+        diskURL = caches.appendingPathComponent("kisani_local_index.json")
+    }
+
+    // MARK: — Lifecycle
+
+    /// Load from disk if available; otherwise build from PHFetchResult in background.
+    /// Safe to call multiple times — subsequent calls are no-ops if records are loaded.
+    func loadOrBuild() async {
+        guard records.isEmpty else { return }
+        if let loaded = await Self.loadFromDisk(url: diskURL) {
+            records = loaded
+            log.info("LocalPhotoIndex: loaded \(self.records.count) records from disk")
+            return
+        }
+        log.info("LocalPhotoIndex: building from scratch (first launch)")
+        await buildFromLibrary()
+    }
+
+    // MARK: — Queries
+
+    var totalCount: Int { records.count }
+
+    func allRecords() -> [Record] { Array(records.values) }
+
+    func countSafe(against index: ManifestIndex, filter: BackupFilter) -> Int {
+        var safe = 0
+        for record in records.values {
+            guard passes(record, filter: filter) else { continue }
+            if index.matches(localIdentifier: record.localIdentifier) {
+                safe += 1
+            } else if index.isFilenameOnly && index.matches(filename: record.filename) {
+                safe += 1
+            }
+        }
+        return safe
+    }
+
+    /// Returns localIdentifiers for assets not yet in the manifest (pending upload).
+    func pendingIDs(against index: ManifestIndex, filter: BackupFilter) -> [String] {
+        records.values.compactMap { record in
+            guard passes(record, filter: filter) else { return nil }
+            let alreadyBacked =
+                index.matches(localIdentifier: record.localIdentifier) ||
+                (index.isFilenameOnly && index.matches(filename: record.filename))
+            return alreadyBacked ? nil : record.localIdentifier
+        }
+    }
+
+    // MARK: — Incremental updates (from PHPhotoLibraryChangeObserver)
+
+    func apply(inserted: [PHAsset], removed: [PHAsset], changed: [PHAsset]) {
+        for asset in removed { records.removeValue(forKey: asset.localIdentifier) }
+        for asset in inserted + changed {
+            records[asset.localIdentifier] = Self.makeRecord(asset)
+        }
+        needsSave = true
+        log.debug("LocalPhotoIndex: +\(inserted.count) -\(removed.count) ~\(changed.count)")
+    }
+
+    func flush() async {
+        guard needsSave else { return }
+        needsSave = false
+        let snapshot = records
+        let url = diskURL
+        await Task.detached(priority: .utility) {
+            guard let data = try? JSONEncoder.kisani.encode(snapshot) else { return }
+            try? data.write(to: url, options: .atomic)
+        }.value
+        log.debug("LocalPhotoIndex: flushed \(snapshot.count) records")
+    }
+
+    // MARK: — Private helpers
+
+    private func passes(_ record: Record, filter: BackupFilter) -> Bool {
+        let img = PHAssetMediaType.image.rawValue
+        let vid = PHAssetMediaType.video.rawValue
+        if !filter.includePhotos && record.mediaType == img { return false }
+        if !filter.includeVideos && record.mediaType == vid { return false }
+        if !filter.includeScreenshots && record.isScreenshot { return false }
+        if !filter.includeRAW && record.isRAW { return false }
+        return true
+    }
+
+    private func buildFromLibrary() async {
+        let opts = PHFetchOptions()
+        opts.includeAssetSourceTypes = [.typeUserLibrary, .typeCloudShared, .typeiTunesSynced]
+        let built: [String: Record] = await Task.detached(priority: .userInitiated) {
+            let result = PHAsset.fetchAssets(with: opts)
+            var map = [String: Record](minimumCapacity: result.count)
+            let batchSize = 200
+            var i = 0
+            while i < result.count {
+                autoreleasepool {
+                    let end = min(i + batchSize, result.count)
+                    for j in i..<end {
+                        let asset = result.object(at: j)
+                        let rec = Self.makeRecord(asset)
+                        map[rec.localIdentifier] = rec
+                    }
+                    i = end
+                }
+            }
+            return map
+        }.value
+        records = built
+        needsSave = true
+        await flush()
+        log.info("LocalPhotoIndex: built \(self.records.count) records")
+    }
+
+    private nonisolated static func loadFromDisk(url: URL) async -> [String: Record]? {
+        await Task.detached(priority: .utility) {
+            guard let data = try? Data(contentsOf: url) else { return nil }
+            return try? JSONDecoder.kisani.decode([String: Record].self, from: data)
+        }.value
+    }
+
+    nonisolated static func makeRecord(_ asset: PHAsset) -> Record {
+        let resources = PHAssetResource.assetResources(for: asset)
+        let filename = resources.first?.originalFilename
+            ?? "\(asset.localIdentifier.prefix(8)).jpg"
+        let isRAW = resources.contains { $0.type == .alternatePhoto }
+        let isScreenshot = asset.mediaSubtypes.contains(.photoScreenshot)
+        return Record(
+            localIdentifier: asset.localIdentifier,
+            filename: filename,
+            creationDate: asset.creationDate,
+            mediaType: asset.mediaType.rawValue,
+            isScreenshot: isScreenshot,
+            isRAW: isRAW
+        )
+    }
+}

Services/NASManifestCache.swift

@@ -0,0 +1,72 @@
+import Foundation
+import os.log
+
+private let log = Logger(subsystem: "com.albert.nasbackup", category: "ManifestCache")
+
+/// Persists a copy of the NAS backup manifest on-device so reconciliation can
+/// skip the NAS network round-trip when the cache is still fresh.
+///
+/// Cache is updated after every successful manifest download and after every
+/// completed backup. Stale threshold = 5 minutes. The actor serialises all
+/// reads and writes so the cache is safe to use across tasks and threads.
+actor NASManifestCache {
+    static let shared = NASManifestCache()
+
+    private var cached: CachedEntry?
+    private let diskURL: URL
+    private static let staleInterval: TimeInterval = 5 * 60
+
+    private struct CachedEntry: Codable {
+        var manifest: BackupManifest
+        var savedAt: Date
+    }
+
+    private init() {
+        let caches = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)[0]
+        diskURL = caches.appendingPathComponent("kisani_manifest_cache.json")
+        // Load from disk immediately so the first `manifest` access is instant.
+        if let data = try? Data(contentsOf: diskURL),
+           let entry = try? JSONDecoder.kisani.decode(CachedEntry.self, from: data) {
+            cached = entry
+            log.info("ManifestCache: loaded \(entry.manifest.entries.count) entries from disk")
+        }
+    }
+
+    /// Returns the cached manifest without any I/O. Never nil after first reconcile.
+    var manifest: BackupManifest? { cached?.manifest }
+
+    /// True when the cache is absent or older than the stale threshold.
+    var isStale: Bool {
+        guard let c = cached else { return true }
+        return Date().timeIntervalSince(c.savedAt) > NASManifestCache.staleInterval
+    }
+
+    /// Persist a freshly-downloaded manifest. Call after every successful NAS download.
+    func update(_ manifest: BackupManifest) {
+        let entry = CachedEntry(manifest: manifest, savedAt: Date())
+        cached = entry
+        log.info("ManifestCache: updated — \(manifest.entries.count) entries")
+        Task.detached(priority: .utility) { [entry, url = diskURL] in
+            guard let data = try? JSONEncoder.kisani.encode(entry) else { return }
+            try? data.write(to: url, options: .atomic)
+        }
+    }
+}
+
+// MARK: — Shared encoder/decoder
+
+extension JSONEncoder {
+    static let kisani: JSONEncoder = {
+        let e = JSONEncoder()
+        e.dateEncodingStrategy = .iso8601
+        return e
+    }()
+}
+
+extension JSONDecoder {
+    static let kisani: JSONDecoder = {
+        let d = JSONDecoder()
+        d.dateDecodingStrategy = .iso8601
+        return d
+    }()
+}

Services/NotificationService.swift

@@ -0,0 +1,65 @@
+import UserNotifications
+import Foundation
+
+/// Centralised local-notification sender.
+///
+/// Uses notification identifiers as categories — posting the same id replaces
+/// any previous notification in that category, preventing stale banners from
+/// stacking up.
+enum NotificationService {
+    static func notifyBackupStarted(count: Int) {
+        guard count > 0 else { return }
+        post(
+            id: "kisani.backup.started",
+            title: "Backup started",
+            body: "Kisani is backing up \(count) new \(count == 1 ? "item" : "items")."
+        )
+    }
+
+    static func notifyBackupCompleted(uploaded: Int, total: Int) {
+        post(
+            id: "kisani.backup.completed",
+            title: "Backup complete",
+            body: total > 0
+                ? "All \(total) photos are safe."
+                : "\(uploaded) \(uploaded == 1 ? "item" : "items") backed up."
+        )
+    }
+
+    static func notifyBackupPaused(pendingCount: Int) {
+        post(
+            id: "kisani.backup.paused",
+            title: "Backup paused",
+            body: pendingCount > 0
+                ? "Kisani will continue \(pendingCount) \(pendingCount == 1 ? "item" : "items") when your NAS is reachable."
+                : "Kisani will continue when your NAS is reachable."
+        )
+    }
+
+    static func notifyBackupFailed(count: Int) {
+        post(
+            id: "kisani.backup.failed",
+            title: "Backup failed",
+            body: "\(count) \(count == 1 ? "item" : "items") could not be backed up. Tap to review."
+        )
+    }
+
+    static func notifyNASOffline() {
+        post(
+            id: "kisani.nas.offline",
+            title: "NAS unreachable",
+            body: "Kisani will resume backup when your NAS is back online."
+        )
+    }
+
+    // MARK: — Private
+
+    private static func post(id: String, title: String, body: String) {
+        let content = UNMutableNotificationContent()
+        content.title = title
+        content.body  = body
+        content.sound = .default
+        let request = UNNotificationRequest(identifier: id, content: content, trigger: nil)
+        UNUserNotificationCenter.current().add(request) { _ in }
+    }
+}