Improvements to the state tracking #401

[rozyczko]

This pull request enhances the functionality of the project-saving mechanism in Project.save_as_json, ensuring atomic file writes.

Atomic and robust project saving:

• The save_as_json method in Project now writes to a temporary file in the target directory and atomically replaces the destination file using os.replace, ensuring that a failed save does not corrupt or partially overwrite an existing file. Exceptions are now raised instead of being printed, allowing callers to handle errors appropriately.

[codecov]

Codecov Report

❌ Patch coverage is 93.75000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.42%. Comparing base (35c0aa1) to head (cc29da4).

Files with missing lines	Patch %	Lines
src/easyreflectometry/_bumps_constraints.py	90.47%	2 Missing ⚠️
src/easyreflectometry/project.py	95.34%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #405      +/-   ##
===========================================
- Coverage    94.43%   94.42%   -0.01%     
===========================================
  Files           54       54              
  Lines         5533     5562      +29     
===========================================
+ Hits          5225     5252      +27     
- Misses         308      310       +2     

Flag	Coverage Δ
integration	38.38% <6.25%> (-0.17%)	⬇️
unittests	94.42% <93.75%> (-0.01%)	⬇️

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

Files with missing lines	Coverage Δ
src/easyreflectometry/inequality_constraints.py	94.00% <ø> (ø)
src/easyreflectometry/_bumps_constraints.py	95.74% <90.47%> (-4.26%)	⬇️
src/easyreflectometry/project.py	94.26% <95.34%> (+0.12%)	⬆️

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.