Remove newFilesOnly toggle; add functional notifications; fix WiFi status

WHAT TO BACK UP section:
- Remove "New files only" / "Skip files already on NAS" toggle from Settings
- Remove BackupFilter.newFilesOnly field — duplicate protection is always active
  (fileExists pre-check + hybrid filterIndex ensure NAS files are never re-uploaded)

NOTIFICATIONS section:
- Replace static decorative rows with real ToggleRow controls backed by
  ConnectionStore (notifyOnStart=false, notifyOnComplete=true, notifyOnErrors=true)
- BackupEngine now gates notification calls behind these store flags

NETWORK section:
- WiFi row always shows ● On / ● Off indicator (was only shown when SSID known)
- Shows "Trusted" / "Unknown" when SSID is available, "On" / "Off" otherwise

Tests:
- makeAssets: add missing isScreenRecording parameter
- Rename test_backup_skipsExistingFiles_whenNewFilesOnly → _alwaysHardcoded,
  remove filter.newFilesOnly assignment
- MockNASService: add downloadData, writeData, deleteFile to satisfy protocol

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

Features/Settings/SettingsView.swift

@@ -138,10 +138,6 @@ struct SettingsView: View {
                 hairline
                 ToggleRow(icon: "rays", title: "RAW",
                           isOn: $store.backupFilter.includeRAW)
-                hairline
-                ToggleRow(icon: "doc.badge.clock", title: "New files only",
-                          subtitle: "Skip files already on NAS",
-                          isOn: $store.backupFilter.newFilesOnly)
             }
             .background(AppTheme.surfaceRaised)
             .clipShape(RoundedRectangle(cornerRadius: AppTheme.radius, style: .continuous))
@@ -221,15 +217,19 @@ struct SettingsView: View {
                             .foregroundStyle(AppTheme.inkTertiary)
                     }
                     Spacer()
-                    if lanMonitor.currentSSID != nil {
-                        let trusted = store.trustedSSIDs.contains(lanMonitor.currentSSID ?? "")
-                        HStack(spacing: 4) {
-                            Circle()
-                                .fill(trusted ? AppTheme.positive : AppTheme.inkQuaternary)
-                                .frame(width: 5, height: 5)
+                    HStack(spacing: 4) {
+                        Circle()
+                            .fill(lanMonitor.isOnNetwork ? AppTheme.positive : AppTheme.inkQuaternary)
+                            .frame(width: 5, height: 5)
+                        if let ssid = lanMonitor.currentSSID {
+                            let trusted = store.trustedSSIDs.contains(ssid)
                             Text(trusted ? "Trusted" : "Unknown")
                                 .font(AppTheme.micro())
                                 .foregroundStyle(trusted ? AppTheme.positive : AppTheme.inkTertiary)
+                        } else {
+                            Text(lanMonitor.isOnNetwork ? "On" : "Off")
+                                .font(AppTheme.micro())
+                                .foregroundStyle(lanMonitor.isOnNetwork ? AppTheme.positive : AppTheme.inkTertiary)
                         }
                     }
                 }
@@ -490,11 +490,17 @@ struct SettingsView: View {
             sectionLabel("NOTIFICATIONS")
 
             VStack(spacing: 0) {
-                notifRow(icon: "bell", title: "On start", value: "Off")
+                ToggleRow(icon: "bell", title: "On start",
+                          subtitle: "Notify when a backup begins",
+                          isOn: $store.notifyOnStart)
                 hairline
-                notifRow(icon: "checkmark.circle", title: "On complete", value: "On")
+                ToggleRow(icon: "checkmark.circle", title: "On complete",
+                          subtitle: "Notify when all files are safe",
+                          isOn: $store.notifyOnComplete)
                 hairline
-                notifRow(icon: "exclamationmark.triangle", title: "On errors", value: "On")
+                ToggleRow(icon: "exclamationmark.triangle", title: "On errors",
+                          subtitle: "Notify if any uploads fail",
+                          isOn: $store.notifyOnErrors)
             }
             .background(AppTheme.surfaceRaised)
             .clipShape(RoundedRectangle(cornerRadius: AppTheme.radius, style: .continuous))
@@ -502,24 +508,6 @@ struct SettingsView: View {
         }
     }
 
-    private func notifRow(icon: String, title: String, value: String) -> some View {
-        HStack(spacing: 12) {
-            Image(systemName: icon)
-                .font(.system(size: 14, weight: .regular))
-                .foregroundStyle(AppTheme.inkSecondary)
-                .frame(width: 20)
-            Text(title)
-                .font(AppTheme.body())
-                .foregroundStyle(AppTheme.ink)
-            Spacer()
-            Text(value)
-                .font(AppTheme.caption())
-                .foregroundStyle(AppTheme.inkTertiary)
-        }
-        .padding(.horizontal, AppTheme.cardPad)
-        .padding(.vertical, 14)
-    }
-
     private var hairline: some View {
         Rectangle()
             .fill(AppTheme.separator)