Sessions Integration Feature

Nucleic-Session: FC94353F-9F0D-4BCC-AD7C-0FB14E38C2E5
Co-authored-by: Nucleic <[email protected]>

NucleicRemote/NucleicRemote/Models/RemoteStore.swift

@@ -614,25 +614,38 @@ final class RemoteStore: ObservableObject {
     }
 
 
+    /// Unpair this device entirely — drop every paired Mac and its connection (the "Unpair this
+    /// device" button). Nothing left to show, so the app returns to the pairing intro.
     func unpair() {
-        // Forget + drop the active Mac's connection specifically (the switcher may have made it not
-        // the last). Other Macs' connections keep running.
-        if let id = activeHostID {
-            connections[id]?.teardown()
-            connections[id] = nil
-            IdentityStore.removePairedHost(id: id)
-        } else {
+        for (id, conn) in connections { conn.teardown(); connections[id] = nil }
+        for host in IdentityStore.pairedHosts() { IdentityStore.removePairedHost(id: host.fingerprint) }
         IdentityStore.clearPairedHost()
+        finishUnpairIfEmpty()
     }
-        activeHostID = nil
-        // Mesh P3: if other Macs remain paired, switch to one (already connected) rather than unpairing.
-        if let next = IdentityStore.pairedHosts().last {
-            activeHostID = next.fingerprint
-            reconnect()
-            return
+
+    /// Forget one paired Mac (the Settings ▸ Mesh per-row remove): drop just its connection +
+    /// registry record. Other Macs keep running and stay in the merged view.
+    func unpair(_ hostID: String) {
+        connections[hostID]?.teardown()
+        connections[hostID] = nil
+        IdentityStore.removePairedHost(id: hostID)
+        if IdentityStore.pairedHosts().isEmpty {
+            finishUnpairIfEmpty()
+        } else {
+            rebuildAggregate()
+            refreshAggregate()
         }
+    }
+
+    /// Wind the app back to the unpaired state once no Macs remain: clear the open transcript + flat
+    /// aggregate and spin the embedded Tailscale node down.
+    private func finishUnpairIfEmpty() {
+        openSessionID = nil
+        openSessionHostID = nil
+        openEvents = []; openApprovals = []; openDiff = nil; diffLoading = false
         connectivity = .unpaired
         sessions = []
+        dashboard = .empty
         // Nothing left to dial — spin the embedded Tailscale node down if it was running.
         Task { await TailnetNode.shared.stop() }
         tailnetStatus = nil