Launch Activity Logic

Nucleic-Session: EBB24271-3AB2-4CBD-A47A-59FC73500371
Co-authored-by: Nucleic <[email protected]>

NucleicRemote/NucleicRemote/Models/RemoteStore.swift

@@ -1203,6 +1203,12 @@ final class RemoteStore: ObservableObject {
     /// Host ids that already have the current token (re-sent to a host that (re)connects, and
     /// re-sent to everyone when the token rotates).
     private var liveActivitySentTo: Set<String> = []
+    /// This device's push-to-start token (iOS 17.2+), shipped to every capable Mac so it can create
+    /// the Live Activity over APNs when work starts before the app is opened. Device-scoped, so —
+    /// unlike `liveActivityReg` — it persists across activities and isn't cleared when one ends.
+    private var pushToStartToken: String?
+    /// Host ids that already have the current push-to-start token (mirrors `liveActivitySentTo`).
+    private var pushToStartSentTo: Set<String> = []
 
     private func setupLiveActivityBridge() {
         LiveActivityManager.shared.onPushToken = { [weak self] token, activityID in
@@ -1211,6 +1217,15 @@ final class RemoteStore: ObservableObject {
             self.liveActivitySentTo.removeAll()  // a fresh token must reach every host again
             self.syncLiveActivityRegistration()
         }
+        LiveActivityManager.shared.onPushToStartToken = { [weak self] token in
+            guard let self, self.pushToStartToken != token else { return }
+            self.pushToStartToken = token
+            self.pushToStartSentTo.removeAll()  // a fresh token must reach every host again
+            self.syncPushToStartRegistration()
+        }
+        // Start observing the push-to-start token (and adopting any push-started activity) now — it's
+        // device-scoped and must be captured even before any Activity exists.
+        LiveActivityManager.shared.beginPushToStartObservation()
         LiveActivityManager.shared.onActivityEnded = { [weak self] activityID in
             guard let self else { return }
             self.liveActivityReg = nil