0.1.26-alpha release

* refactor: render chat rows from presentation state

* Fix Meshtastic channel sync and add MeshCore CN preset

* Add granular chat notification settings

* Add SD settings backup and restore

* Prepare 0.1.26-alpha release

---------

Co-authored-by: vicliu624 <vicliu@outlook.com>

apps/nrf52_node/src/nrf52_node_app_shell.cpp

@@ -0,0 +1,51 @@
+#include "nrf52_node_app_shell.h"
+
+#include "product_composition/target_ux_binding.h"
+
+#include <cstring>
+
+namespace trailmate
+{
+namespace apps
+{
+namespace nrf52_node
+{
+
+const Nrf52NodeAppShellConfig& Nrf52NodeAppShell::config() const
+{
+    return config_;
+}
+
+const char* Nrf52NodeAppShell::targetId() const
+{
+    return config_.target_id;
+}
+
+const product_composition::TargetProfile* Nrf52NodeAppShell::targetProfile() const
+{
+    return product_composition::findTargetProfile(targetId());
+}
+
+const char* Nrf52NodeAppShell::activeUxPackId() const
+{
+    const auto* binding = product_composition::findTargetUxBinding(targetId());
+    return binding != nullptr ? binding->active_ux_pack_id : nullptr;
+}
+
+bool Nrf52NodeAppShell::validate() const
+{
+    return config_.target_id != nullptr &&
+           targetProfile() != nullptr &&
+           product_composition::findTargetUxBinding(targetId()) != nullptr &&
+           config_.target_family != nullptr &&
+           config_.default_ux_pack_id != nullptr &&
+           std::strcmp(config_.default_ux_pack_id, activeUxPackId()) == 0 &&
+           config_.historical_generic_root_name != nullptr &&
+           config_.historical_board_root_name != nullptr &&
+           config_.historical_role != nullptr &&
+           config_.replacement_owner != nullptr;
+}
+
+} // namespace nrf52_node
+} // namespace apps
+} // namespace trailmate