Allow Remote sessions to outlive connection forms

internal/tentacle/remote_background_test.go

@@ -0,0 +1,67 @@
+// Copyright (c) 2026 Storm Dragon
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package tentacle
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"git.stormux.org/storm/cthulhu/internal/tentaclewire"
+)
+
+func TestRemoteBackgroundLeaseOwnershipAndLifetime(t *testing.T) {
+	for _, language := range []string{"go", "python"} {
+		t.Run(language, func(t *testing.T) {
+			manager := test_manager(t, DefaultLimits(), nil)
+			policy := NewRemotePolicy()
+			if err := manager.UseRemotePolicy(policy); err != nil {
+				t.Fatal(err)
+			}
+			session := startSessionSDK(t, manager, language, "speech")
+			lease := speech_fixture_lease(t, session, "controlled", []string{"output-observe"})
+			lifetime, err := session.RemoteLeaseContext(lease)
+			if err != nil || lifetime.Err() != nil {
+				t.Fatal("live owned lease unavailable", err)
+			}
+			for _, invalid := range []tentaclewire.RemoteLease{{}, {Lease: lease.Lease, Epoch: lease.Epoch + 1}, {Lease: strings.Repeat("b", 32), Epoch: lease.Epoch}} {
+				if _, err := session.RemoteLeaseContext(invalid); err == nil {
+					t.Fatal("invalid ownership accepted")
+				}
+			}
+			if _, err := session.RemoteContext(lease, ""); err == nil {
+				t.Fatal("ownership check bypassed desktop grant requirement")
+			}
+			other := startSessionSDK(t, manager, language, "speech-other")
+			if _, err := other.RemoteLeaseContext(lease); err == nil {
+				t.Fatal("another process session acquired lease ownership")
+			}
+			policy.SetAvailable(false)
+			policy.SetAvailable(true)
+			if lifetime.Err() == nil {
+				t.Fatal("lock/handoff round trip retained background lifetime")
+			}
+			if _, err := session.RemoteLeaseContext(lease); err == nil {
+				t.Fatal("background ownership survived policy retirement")
+			}
+			// A replacement remains distinct, even while old forms finish.
+			session.RevokeRemote()
+			invokeSessionSDK(t, session, "event", nil)
+			replacement := speech_fixture_lease(t, session, "controlled", []string{"output-observe"})
+			if _, err := session.RemoteLeaseContext(lease); err == nil {
+				t.Fatal("old controls followed replacement consent")
+			}
+			session.RevokeRemoteEpoch(lease.Epoch)
+			if _, err := session.RemoteLeaseContext(replacement); err != nil {
+				t.Fatal("old cleanup retired replacement", err)
+			}
+			session.mutex.Lock()
+			session.remote.deadline = time.Now().Add(-time.Second)
+			session.mutex.Unlock()
+			if _, err := session.RemoteLeaseContext(replacement); err == nil {
+				t.Fatal("expired lease accepted for background ownership")
+			}
+		})
+	}
+}