refactor - plugin names and builtin plugins

plugins/_memory/extensions/python/embedding_model_changed/_10_memory_reload.py

@@ -0,0 +1,10 @@
+from helpers.extension import Extension
+
+# Direct import - this extension lives inside the memory plugin
+from plugins._memory.helpers.memory import reload as memory_reload
+
+
+class MemoryReload(Extension):
+
+    async def execute(self, **kwargs):
+        memory_reload()