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/parts/numbering.py

@@ -0,0 +1,32 @@
+"""|NumberingPart| and closely related objects."""
+
+from ..opc.part import XmlPart
+from ..shared import lazyproperty
+
+
+class NumberingPart(XmlPart):
+    """Proxy for the numbering.xml part containing numbering definitions for a document
+    or glossary."""
+
+    @classmethod
+    def new(cls) -> "NumberingPart":
+        """Newly created numbering part, containing only the root ``<w:numbering>`` element."""
+        raise NotImplementedError
+
+    @lazyproperty
+    def numbering_definitions(self):
+        """The |_NumberingDefinitions| instance containing the numbering definitions
+        (<w:num> element proxies) for this numbering part."""
+        return _NumberingDefinitions(self._element)
+
+
+class _NumberingDefinitions:
+    """Collection of |_NumberingDefinition| instances corresponding to the ``<w:num>``
+    elements in a numbering part."""
+
+    def __init__(self, numbering_elm):
+        super(_NumberingDefinitions, self).__init__()
+        self._numbering = numbering_elm
+
+    def __len__(self):
+        return len(self._numbering.num_lst)