Enforce ruff/flake8-pyi rules (PYI)

Author: DimitriPapadopoulos

pyproject.toml

@@ -258,6 +258,7 @@ extend-select = [
   "C4",   # flake8-comprehensions
   "PIE",  # flake8-pie
   "TID",  # flake8-tidy-imports (absolute imports)
+  "PYI",  # flake8-pyi
   "PGH",  # pygrep-hooks
   "PERF", # Perflint
   "RUF",
@@ -272,6 +273,7 @@ ignore = [
   "UP007",   # use X | Y for type annotations
   "C40",     # unnecessary generator, comprehension, or literal
   "PIE790",  # unnecessary pass statement
+  "PYI041",  # use `float` instead of `int | float`
   "PERF203", # try-except within a loop incurs performance overhead
   "RUF001",  # string contains ambiguous unicode character
   "RUF002",  # docstring contains ambiguous acute accent unicode character