refactor(acp): git mv acp_adapter/ → hermes_agent/acp/

Pure file moves, zero content changes. Creates the hermes_agent/
top-level package. Git sees 100% similarity on all moves.

Part of #14586, #14182

hermes_agent/__init__.py

@@ -0,0 +1 @@
+"""Hermes Agent — The self-improving AI agent."""