refactor: upstream env manager

[flying-sheep]

• Closes #
• Tests included or not required because:

• Release notes not necessary because:

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.60%. Comparing base (30b96bb) to head (2e3607c).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4115   +/-   ##
=======================================
  Coverage   79.60%   79.60%           
=======================================
  Files         119      119           
  Lines       12771    12771           
=======================================
  Hits        10166    10166           
  Misses       2605     2605           

Flag	Coverage Δ
hatch-test.low-vers	78.88% <ø> (ø)
hatch-test.pre	79.46% <ø> (+<0.01%)	⬆️

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