Refactor server ert

[oyvindeide]

Issue
Resolves #my_issue

Approach
Short description of the approach

(Screenshot of new behavior in GUI if applicable)

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure unit tests pass locally after every commit (git rebase -i main --exec 'just rapid-tests')

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Add backport label to latest release (format: 'backport release-branch-name')

[codecov-commenter]

Codecov Report

❌ Patch coverage is 40.69767% with 153 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.39%. Comparing base (15b1b96) to head (e1f2d46).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...rc/ert/dark_storage/endpoints/experiment_server.py	26.73%	74 Missing ⚠️
src/ert/gui/experiments/experiment_panel.py	10.52%	51 Missing ⚠️
src/ert/gui/experiments/experiment_client.py	40.00%	21 Missing ⚠️
src/ert/run_models/model_factory.py	86.11%	5 Missing ⚠️
src/ert/run_models/ensemble_smoother.py	75.00%	1 Missing ⚠️
src/everest/gui/main_window.py	0.00%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (15b1b96) and HEAD (e1f2d46). Click for more details.

HEAD has 12 uploads less than BASE

Flag	BASE (15b1b96)	HEAD (e1f2d46)
gui-tests	5	0
test	5	4
performance-and-unit-tests	5	0
cli-tests	5	4

Additional details and impacted files

@@             Coverage Diff             @@
##             main   #13452       +/-   ##
===========================================
- Coverage   89.96%   56.39%   -33.57%     
===========================================
  Files         460      460               
  Lines       32409    32555      +146     
===========================================
- Hits        29158    18361    -10797     
- Misses       3251    14194    +10943     

Flag	Coverage Δ
cli-tests	36.39% <20.54%> (-0.66%)	⬇️
fuzz	44.06% <29.06%> (+0.03%)	⬆️
gui-tests	?
performance-and-unit-tests	?
test	47.70% <38.37%> (+2.00%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/ert/run_models/ensemble_experiment.py	97.67% <100.00%> (-2.33%)	⬇️
src/ert/run_models/ensemble_information_filter.py	96.00% <100.00%> (-4.00%)	⬇️
src/ert/run_models/evaluate_ensemble.py	59.52% <100.00%> (-35.60%)	⬇️
src/ert/run_models/manual_update.py	61.90% <100.00%> (-33.22%)	⬇️
src/ert/run_models/manual_update_enif.py	84.21% <100.00%> (-9.54%)	⬇️
src/ert/run_models/multiple_data_assimilation.py	89.47% <100.00%> (-4.34%)	⬇️
src/ert/run_models/single_test_run.py	91.66% <100.00%> (-8.34%)	⬇️
src/everest/config/everest_config.py	94.48% <100.00%> (+0.02%)	⬆️
src/everest/strings.py	100.00% <100.00%> (ø)
src/ert/run_models/ensemble_smoother.py	95.12% <75.00%> (-2.32%)	⬇️
... and 5 more

... and 270 files with indirect coverage changes

[codspeed-hq]

Merging this PR will not alter performance

✅ 36 untouched benchmarks

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_{Comparing oyvindeide:refactor_server_ert (78ea7ed) with main (d5f13f9)}