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/docx/opc/shared.py

@@ -0,0 +1,31 @@
+"""Objects shared by opc modules."""
+
+from __future__ import annotations
+
+from typing import Any, Dict, TypeVar
+
+_T = TypeVar("_T")
+
+
+class CaseInsensitiveDict(Dict[str, Any]):
+    """Mapping type that behaves like dict except that it matches without respect to the
+    case of the key.
+
+    E.g. cid['A'] == cid['a']. Note this is not general-purpose, just complete enough to
+    satisfy opc package needs. It assumes str keys, and that it is created empty; keys
+    passed in constructor are not accounted for
+    """
+
+    def __contains__(self, key):
+        return super(CaseInsensitiveDict, self).__contains__(key.lower())
+
+    def __getitem__(self, key):
+        return super(CaseInsensitiveDict, self).__getitem__(key.lower())
+
+    def __setitem__(self, key, value):
+        return super(CaseInsensitiveDict, self).__setitem__(key.lower(), value)
+
+
+def cls_method_fn(cls: type, method_name: str):
+    """Return method of `cls` having `method_name`."""
+    return getattr(cls, method_name)