Live Activity Session Retention

Nucleic-Session: F2CCC9F2-A7BA-4A94-ADAA-5414F168045E
Co-authored-by: Nucleic <[email protected]>

NucleicRemote/NucleicRemote/LiveActivityManager.swift

@@ -130,17 +130,22 @@ final class LiveActivityManager {
         push(state, hostName: hostName)
     }
 
-    /// Nothing is running or waiting. If the glance was showing active work, flash a brief "Done"
-    /// summary of the just-completed sessions and then dismiss (UX_IOS §5.3 — a run should read as
-    /// *finished*, not just vanish). If nothing was on screen, there's nothing to close.
+    /// Nothing is running or waiting. If the glance was showing active work, replace it with a "Done"
+    /// summary of the just-completed sessions and hold it on the lock screen until the user opens the
+    /// app and sees them (UX_IOS §5.3 — a finished run should read as *done* and stay put, not vanish
+    /// after a few seconds unseen). Foreground, the user is already on the in-app session list, so
+    /// there's nothing to hold — dismiss. If nothing was on screen, there's nothing to close.
     private func finishWithDoneGlance(hostName: String, live: [WireSessionSummary]) {
-        // Already flashing "Done" and scheduled to dismiss — let that run rather than restart it.
-        guard dismissTask == nil else { return }
+        // Already holding the "Done" summary — leave it up until the app foregrounds, don't rebuild it.
+        guard !showingDoneGlance else { return }
         // Nothing tracked on screen: only reach into ActivityKit if an untracked orphan is lingering.
         guard activity != nil else {
             if !Activity<NucleicSessionAttributes>.activities.isEmpty { end() }
             return
         }
+        // Foreground: the user is already looking at the in-app session list (the glance isn't even
+        // visible over the app), so there's nothing to hold for later — just dismiss.
+        guard !foreground else { end(); return }
         // The sessions that just finished — completed conversational turns and finished runs. These
         // are exactly the ones the active-work filter above drops, surfaced now as `.done` rows.
         let done = live
@@ -151,18 +156,16 @@ final class LiveActivityManager {
             .sorted(by: StatusStyle.attentionThenRecency)
             .prefix(Self.maxLines)
             .map(Self.line(for:))
-        // Nothing to celebrate (e.g. the work was discarded/deleted) → just dismiss.
+        // Nothing to show (e.g. the work was discarded/deleted) → just dismiss.
         guard !done.isEmpty else { end(); return }
 
         let state = NucleicSessionAttributes.ContentState(
             runningCount: 0, needsYouCount: 0, approvalCount: 0,
             filesChanged: 0, linesAdded: 0, linesRemoved: 0, lines: Array(done))
         push(state, hostName: hostName)
-        dismissTask = Task { [weak self] in
-            try? await Task.sleep(for: Self.doneLinger)
-            guard !Task.isCancelled else { return }
-            self?.end()
-        }
+        // Hold it: the Activity stays alive showing "Done". No scheduled dismissal — `foreground`
+        // flipping true (the app coming forward) is what ends it.
+        showingDoneGlance = true
     }
 
     /// Apply `state` to the Activity — coalesced through one serial task so the newest state always