diff --git a/src/htm/AttachApi.hpp b/src/htm/AttachApi.hpp
new file mode 100644
index 000000000..073fb87c7
--- /dev/null
+++ b/src/htm/AttachApi.hpp
@@ -0,0 +1,6 @@
+#pragma once
+namespace et { namespace htm {
+/// Named session attach/detach API (Issue #779)
+void attachNamedSession(const char* name);
+void detachNamedSession(const char* name);
+}} // namespace
diff --git a/src/htm/ControllerScope.hpp b/src/htm/ControllerScope.hpp
new file mode 100644
index 000000000..324edea7c
--- /dev/null
+++ b/src/htm/ControllerScope.hpp
@@ -0,0 +1,8 @@
+#pragma once
+namespace et { namespace htm {
+/// Separate controller scope for persistent named sessions (Issue #779)
+struct ControllerScope {
+    bool isolated = false;
+    int sessionId = 0;
+};
+}} // namespace
diff --git a/test/unit_tests/AttachApiTest.cpp b/test/unit_tests/AttachApiTest.cpp
new file mode 100644
index 000000000..331c073b4
--- /dev/null
+++ b/test/unit_tests/AttachApiTest.cpp
@@ -0,0 +1,4 @@
+#include <gtest/gtest.h>
+namespace {
+TEST(NamedSessionAttachDetach, Stub) { EXPECT_TRUE(true); }
+}