container: plugins: root: example: support Pluggable entrypoint

container/plugins/root/example/example.cc

@@ -1,6 +1,6 @@
 // docker-finance | modern accounting for the power-user
 //
-// Copyright (C) 2024-2025 Aaron Fiore (Founder, Evergreen Crypto LLC)
+// Copyright (C) 2024-2026 Aaron Fiore (Founder, Evergreen Crypto LLC)
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -41,9 +41,25 @@ namespace dfi::plugin
 //! \since docker-finance 1.1.0
 namespace example
 {
+//! \brief Pluggable entrypoint
+//! \ingroup cpp_plugin_impl
+//! \since docker-finance 1.1.0
+class example_cc
+{
+ public:
+  example_cc() = default;
+  ~example_cc() = default;
+
+  example_cc(const example_cc&) = default;
+  example_cc& operator=(const example_cc&) = default;
+
+  example_cc(example_cc&&) = default;
+  example_cc& operator=(example_cc&&) = default;
+
+ public:
   //! \brief Example auto-loader
   //! \param arg String to pass to auto-loader (use-case is plugin-implementation defined)
-void load(const std::string& arg = {})
+  static void load(const std::string& arg = {})
   {
     namespace plugin = ::dfi::plugin;
     namespace common = ::dfi::common;
@@ -71,7 +87,7 @@ void load(const std::string& arg = {})
 
   //! \brief Example auto-unloader
   //! \param arg String to pass to auto-unloader (use-case is plugin-implementation defined)
-void unload(const std::string& arg = {})
+  static void unload(const std::string& arg = {})
   {
     namespace plugin = ::dfi::plugin;
     namespace common = ::dfi::common;
@@ -96,9 +112,8 @@ void unload(const std::string& arg = {})
     plugin::common::PluginPath path("repo/example/internal/example.cc");
     common::unload(path.absolute());
   }
-
   // NOTE: to auto-reload this plugin, load()/unload() here or utilize one of the `dfi::plugin::reload()` functions.
-
+};
 }  // namespace example
 }  // namespace dfi::plugin