fix(coverage): make the gate mean the same on every Python

A type checking block never runs, and Python 3.14 drops it before coverage can
see it while 3.12 and 3.13 count it as a statement that never executes. The gate
therefore passed on the newest runtime and failed on the oldest supported one,
which is the worst of both. The same split applies to a protocol method whose
body is an ellipsis.

Author: gufranco

pyproject.toml

@@ -103,6 +103,15 @@ exclude_also = [
   # there is nothing behind it left to exercise. Importing the module to cover
   # the guard would run the tool rather than test it.
   'if __name__ == "__main__":',
+  # A type checking block never runs, by definition. Python 3.14 drops it before
+  # coverage can see it and earlier versions do not, so leaving it in would make
+  # the gate mean one thing on the newest runtime and another on the oldest
+  # supported one, which is worse than either.
+  'if TYPE_CHECKING:',
+  # A protocol method has no body to run, whether the ellipsis sits on its own
+  # line or after the signature. The same version split applies.
+  '^\s*\.\.\.$',
+  ': \.\.\.$',
 ]
 
 [tool.mypy]