diff --git a/NucleicRemote/NucleicRemote/Models/RemoteStore.swift b/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
index a3618bf..62a16c2 100644
--- a/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
+++ b/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
@@ -780,6 +780,9 @@ final class RemoteStore: ObservableObject {
         openSessionHostID = nil
         openEvents = []; openApprovals = []; openDiff = nil; diffLoading = false
         connectivity = .unpaired
+        // No Mac left whose history to hold — drop the offline cache too.
+        cachedSummaries = []
+        SessionCache.clear()
         sessions = []
         dashboard = .empty
         // Nothing left to dial — spin the embedded Tailscale node down if it was running.