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/urllib3/util/util.py

@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+import typing
+from types import TracebackType
+
+
+def to_bytes(
+    x: str | bytes, encoding: str | None = None, errors: str | None = None
+) -> bytes:
+    if isinstance(x, bytes):
+        return x
+    elif not isinstance(x, str):
+        raise TypeError(f"not expecting type {type(x).__name__}")
+    if encoding or errors:
+        return x.encode(encoding or "utf-8", errors=errors or "strict")
+    return x.encode()
+
+
+def to_str(
+    x: str | bytes, encoding: str | None = None, errors: str | None = None
+) -> str:
+    if isinstance(x, str):
+        return x
+    elif not isinstance(x, bytes):
+        raise TypeError(f"not expecting type {type(x).__name__}")
+    if encoding or errors:
+        return x.decode(encoding or "utf-8", errors=errors or "strict")
+    return x.decode()
+
+
+def reraise(
+    tp: type[BaseException] | None,
+    value: BaseException,
+    tb: TracebackType | None = None,
+) -> typing.NoReturn:
+    try:
+        if value.__traceback__ is not tb:
+            raise value.with_traceback(tb)
+        raise value
+    finally:
+        value = None  # type: ignore[assignment]
+        tb = None