Silence beartype/numpy PEP 695 warning noise

[hmgaudecker]

Summary

• Adds a scoped pytest filterwarnings ignore for beartype.roar.BeartypeClawDecorWarning messages about numpy dtypes. beartype 0.22.9 (latest release) cannot decorate any parameterized numpy.typing.NDArray[...] hint under numpy>=2.5's PEP 695 NDArray[ScalarT] definition — confirmed with a minimal repro (even a bare NDArray[np.float64] fails). beartype.claw already degrades gracefully (warns, leaves that function's args unchecked) so this is log noise only, not a correctness issue. No matching upstream beartype issue found; will be filed separately. The filter is scoped by message so an unrelated future claw-decoration warning would still surface.

(Note: this branch is based on current main, which already includes the codecov.yml project-target bump to 95% from #96 — that commit landed on main before #96 was merged, so it's not repeated here.)

Test plan

• Confirmed the warning disappears: pixi run -e tests-cpu pytest tests/test_simulate_data.py -q -rw → 13 passed, 1 unrelated warning (previously 6 distinct BeartypeClawDecorWarnings)
• prek run --all-files passes cleanly

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.83%. Comparing base (c6e47c5) to head (28ce64b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #97   +/-   ##
=======================================
  Coverage   95.83%   95.83%           
=======================================
  Files         142      142           
  Lines       14126    14126           
=======================================
  Hits        13537    13537           
  Misses        589      589           

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