fix: resolve Swift 6 concurrency warnings in WebSocketManager

- listen(): capture `task` as local `t` before the Sendable receive closure
  so the @MainActor-isolated property isn't referenced inside a Sendable context
- startPing(): dispatch to @MainActor inside the timer block before accessing `task`
- scheduleReconnect(): capture `self` weakly in the reconnect Task

XcodeGen regenerated to include BackgroundRefreshManager.swift in the project.

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

Jarvis/Networking/WebSocketManager.swift

@@ -60,13 +60,16 @@ final class WebSocketManager: ObservableObject {
     }
 
     private func listen() {
-        task?.receive { [weak self] result in
-            guard let self else { return }
+        // Capture task locally so the Sendable receive closure doesn't reference
+        // the @MainActor-isolated property directly.
+        guard let t = task else { return }
+        t.receive { [weak self] result in
             switch result {
             case .failure:
-                Task { @MainActor in self.handleDisconnect() }
+                Task { @MainActor [weak self] in self?.handleDisconnect() }
             case .success(let message):
-                Task { @MainActor in
+                Task { @MainActor [weak self] in
+                    guard let self else { return }
                     self.handle(message: message)
                     self.listen()
                 }
@@ -99,9 +102,13 @@ final class WebSocketManager: ObservableObject {
     private func startPing() {
         pingTimer?.invalidate()
         pingTimer = Timer.scheduledTimer(withTimeInterval: 30, repeats: true) { [weak self] _ in
-            self?.task?.sendPing { error in
-                if error != nil {
-                    Task { @MainActor in self?.handleDisconnect() }
+            // Hop to MainActor before touching the isolated `task` property.
+            Task { @MainActor [weak self] in
+                guard let self else { return }
+                self.task?.sendPing { [weak self] error in
+                    if error != nil {
+                        Task { @MainActor [weak self] in self?.handleDisconnect() }
+                    }
                 }
             }
         }
@@ -119,10 +126,10 @@ final class WebSocketManager: ObservableObject {
         let delay = min(pow(2.0, Double(attempt - 1)), maxBackoff)
         connectionState = .reconnecting(attempt: attempt)
 
-        reconnectTask = Task {
+        reconnectTask = Task { [weak self] in
             try? await Task.sleep(nanoseconds: UInt64(delay * 1_000_000_000))
             guard !Task.isCancelled else { return }
-            await MainActor.run { self.openConnection() }
+            await MainActor.run { self?.openConnection() }
         }
     }
 }