Initial scaffold — NASBackup iOS app

Full project scaffold: XcodeGen project.yml, Core models/protocols/errors,
SMBService (kishikawakatsumi/SMBClient), SFTPService (Citadel 0.9.2),
PhotoLibraryService, LANMonitor, BackupEngine, BackgroundTaskManager,
all feature UIs (Login, Connect, Browse, Backup, History, Settings),
Shared components and theme. Builds clean with zero errors.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Core/Models/BackupResult.swift

@@ -0,0 +1,41 @@
+import Foundation
+
+struct BackupResult {
+    let uploadedCount: Int
+    let skippedCount: Int
+    let failedCount: Int
+    let duration: TimeInterval
+    let totalBytes: Int64
+    let date: Date
+
+    var hasErrors: Bool { failedCount > 0 }
+
+    static func empty(date: Date = Date()) -> BackupResult {
+        BackupResult(uploadedCount: 0, skippedCount: 0, failedCount: 0,
+                     duration: 0, totalBytes: 0, date: date)
+    }
+}
+
+struct BackupHistoryEntry: Codable, Identifiable {
+    let id: UUID
+    let date: Date
+    let uploadedCount: Int
+    let skippedCount: Int
+    let failedCount: Int
+    let durationSeconds: Double
+    let totalBytes: Int64
+    let nasHost: String
+    let triggeredByLAN: Bool
+
+    init(result: BackupResult, nasHost: String, triggeredByLAN: Bool) {
+        self.id = UUID()
+        self.date = result.date
+        self.uploadedCount = result.uploadedCount
+        self.skippedCount = result.skippedCount
+        self.failedCount = result.failedCount
+        self.durationSeconds = result.duration
+        self.totalBytes = result.totalBytes
+        self.nasHost = nasHost
+        self.triggeredByLAN = triggeredByLAN
+    }
+}