feat: add psagentai agent with deployment and configuration

Initial project setup including the main agent script, configuration
files, profile JSON state, systemd service unit, startup script,
deployment documentation, and Python dependencies.

Includes .env, venv/, and __pycache__/ which should likely be
excluded via .gitignore to avoid committing secrets and artifacts.

venv/lib/python3.11/site-packages/lxml/includes/libxml/SAX.h

@@ -0,0 +1,18 @@
+/*
+ * Summary: Old SAX version 1 handler, deprecated
+ * Description: DEPRECATED set of SAX version 1 interfaces used to
+ *              build the DOM tree.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_SAX_H__
+#define __XML_SAX_H__
+
+#ifdef __GNUC__
+  #warning "libxml/SAX.h is deprecated"
+#endif
+
+#endif /* __XML_SAX_H__ */