chore: dart http foreground upload (#24883)

* feat: bring back manual backup

* expose iCloud retrieval progress

* wip

* unify http upload method, check for connectivity on iOS

* handle LivePhotos progress

* feat: speed calculation

* wip

* better upload detail page

* handle error

* handle error

* pr feedback

* feat: share intent upload

* feat: manual upload

* feat: manual upload progress

* chore: styling

* refactor

* refactor

* remove unused logs

* fix: background android backup

* feat: add error section

* remove complete section

* remove empty state and prevent slot jumps

* more refactor

* fix: background test

* chore: add metadata to foreground upload

* fix: email and name get reset in auth provider

* pr feedback

* remove version check for metadata field in upload payload

* chore: fix unit test

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/ios/Runner/AppDelegate.swift

@@ -55,6 +55,7 @@ import UIKit
     NativeSyncApiImpl.register(with: engine.registrar(forPlugin: NativeSyncApiImpl.name)!)
     ThumbnailApiSetup.setUp(binaryMessenger: engine.binaryMessenger, api: ThumbnailApiImpl())
     BackgroundWorkerFgHostApiSetup.setUp(binaryMessenger: engine.binaryMessenger, api: BackgroundWorkerApiImpl())
+    ConnectivityApiSetup.setUp(binaryMessenger: engine.binaryMessenger, api: ConnectivityApiImpl())
   }
   
   public static func cancelPlugins(with engine: FlutterEngine) {

mobile/ios/Runner/Connectivity/ConnectivityApiImpl.swift

@@ -1,6 +1,60 @@
+import Network
 
 class ConnectivityApiImpl: ConnectivityApi {
+  private let monitor = NWPathMonitor()
+  private let queue = DispatchQueue(label: "ConnectivityMonitor")
+  private var currentPath: NWPath?
+  
+  init() {
+    monitor.pathUpdateHandler = { [weak self] path in
+      self?.currentPath = path
+    }
+    monitor.start(queue: queue)
+    // Get initial state synchronously
+    currentPath = monitor.currentPath
+  }
+  
+  deinit {
+    monitor.cancel()
+  }
+  
   func getCapabilities() throws -> [NetworkCapability] {
-    []
+    guard let path = currentPath else {
+      return []
+    }
+    
+    guard path.status == .satisfied else {
+      return []
+    }
+    
+    var capabilities: [NetworkCapability] = []
+    
+    if path.usesInterfaceType(.wifi) {
+      capabilities.append(.wifi)
+    }
+    
+    if path.usesInterfaceType(.cellular) {
+      capabilities.append(.cellular)
+    }
+    
+    // Check for VPN - iOS reports VPN as .other interface type in many cases
+    // or through the path's expensive property when on cellular with VPN
+    if path.usesInterfaceType(.other) {
+      capabilities.append(.vpn)
+    }
+    
+    // Determine if connection is unmetered:
+    // - Must be on WiFi (not cellular)
+    // - Must not be expensive (rules out personal hotspot)
+    // - Must not be constrained (Low Data Mode)
+    // Note: VPN over cellular should still be considered metered
+    let isOnCellular = path.usesInterfaceType(.cellular)
+    let isOnWifi = path.usesInterfaceType(.wifi)
+    
+    if isOnWifi && !isOnCellular && !path.isExpensive && !path.isConstrained {
+      capabilities.append(.unmetered)
+    }
+    
+    return capabilities
   }
 }