Respect FS_ACCURACY when determining if file is untouched

[sokra]

testing alternative to #215

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.92%. Comparing base (15ac38f) to head (538654f).
⚠️ Report is 58 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #216      +/-   ##
==========================================
- Coverage   92.21%   91.92%   -0.29%     
==========================================
  Files           6        6              
  Lines        1040     1040              
  Branches      248      248              
==========================================
- Hits          959      956       -3     
- Misses         81       84       +3     

Flag	Coverage Δ
integration	91.92% <100.00%> (-0.29%)	⬇️

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