Initial infrastructure documentation - comprehensive homelab reference

aider-test.py

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+# Simple calculator functions
+from typing import Union
+
+def add(a: int, b: int) -> int:
+    """Add two integers."""
+    return a + b
+
+def subtract(a: int, b: int) -> int:
+    """Subtract two integers."""
+    return a - b
+
+def multiply(a: int, b: int) -> int:
+    """Multiply two integers."""
+    return a * b
+
+def divide(a: Union[int, float], b: Union[int, float]) -> Union[int, float]:
+    """Divide two numbers. Raises ValueError if divisor is zero."""
+    if b == 0:
+        raise ValueError("Cannot divide by zero.")
+    return a / b