TypedPython benchmarks: Cython (pure, typed) and numba columns #383

What: add Cython (py/*.py compiled unmodified, and typed .pyx) and numba (@njit steady state, JIT time recorded separately) columns to benchmarks/typedpython/run.py, so TypedPython is compared against the usual Python accelerators, each in its most favourable form with its semantics difference recorded.

Why: the branch feat/bench-cython-numba (2026-10-04) held this work unmerged.

Completion: harness compiles (py_compile, pyflakes clean), the columns report n/a with the uv command when the harness venv is absent, setup is uv-only. No timing run is part of this issue.