feat(lists): add direct user invitation to shared lists and streamline live-sync indicator

internal/storage/sqlite_test.go

@@ -65,6 +65,28 @@ func TestStoreLifecycle(t *testing.T) {
 		t.Fatalf("ToggleListItem failed: %v", err)
 	}
 
+	// Test AddSpaceMember & RemoveSpaceMember
+	u2, err := store.CreateUser("collab_space@example.com", "hash", "Collab User", "member")
+	if err != nil {
+		t.Fatalf("CreateUser u2 failed: %v", err)
+	}
+	member, err := store.AddSpaceMember(user.ID, sp.ID, u2.ID, "editor")
+	if err != nil || member.UserID != u2.ID {
+		t.Fatalf("AddSpaceMember failed: %v", err)
+	}
+	members, err := store.GetSpaceMembers(sp.ID)
+	if err != nil || len(members) != 2 {
+		t.Fatalf("expected 2 members, got %d", len(members))
+	}
+	err = store.RemoveSpaceMember(user.ID, sp.ID, u2.ID)
+	if err != nil {
+		t.Fatalf("RemoveSpaceMember failed: %v", err)
+	}
+	membersAfter, _ := store.GetSpaceMembers(sp.ID)
+	if len(membersAfter) != 1 {
+		t.Fatalf("expected 1 member after remove, got %d", len(membersAfter))
+	}
+
 	// 4. Test Webhook API Key generation & validation
 	apiKey, err := store.CreateAPIKey(user.ID, "Home Assistant")
 	if err != nil {