🧲 TF plot_proc strand turn plotting

[chris-ashe]

This pull request introduces new variables and calculations related to the superconducting cables used in the Toroidal Field (TF) coil system. The main focus is on tracking the number, diameter, and total length of superconducting cables, as well as integrating these properties into the initialization, calculation, and output routines. These changes improve the model's ability to represent cable-in-conduit conductor (CICC) properties and provide more detailed outputs for analysis.

✨ New additions

• n_tf_turn_superconducting_cables
• len_tf_coil_superconductor
• len_tf_superconductor_total

Functions

• calculate_cable_in_conduit_strand_count()
• calculate_cable_in_conduit_superconductor_length()

Calculation Routines

• Implemented calculate_cable_in_conduit_strand_count and calculate_cable_in_conduit_superconductor_length methods in superconducting_tf_coil.py to compute the number of strands and total cable length based on geometric and physical parameters. These are used to update the new variables during TF coil geometry calculation.

Checklist

I confirm that I have completed the following checks:

• My changes follow the PROCESS style guide
• I have justified any large differences in the regression tests caused by this pull request in the comments.
• I have added new tests where appropriate for the changes I have made.
• If I have had to change any existing unit or integration tests, I have justified this change in the pull request comments.
• If I have made documentation changes, I have checked they render correctly.
• I have added documentation for my change, if appropriate.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 11.29032% with 110 lines in your changes missing coverage. Please review.
✅ Project coverage is 46.06%. Comparing base (62a64c4) to head (04fa6a2).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
process/io/plot_proc.py	2.02%	97 Missing ⚠️
process/superconducting_tf_coil.py	18.18%	9 Missing ⚠️
process/tf_coil.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3807      +/-   ##
==========================================
- Coverage   46.19%   46.06%   -0.14%     
==========================================
  Files         123      123              
  Lines       28358    28465     +107     
==========================================
+ Hits        13100    13112      +12     
- Misses      15258    15353      +95     

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[clmould]

The logic looks good to me

[j-a-foster]

Happy with changes.