GEOPY-2794: Change reference of Plate from center-center to top-center

[benk-mira]

GEOPY-2794 - Change reference of Plate from center-center to top-center

[Copilot]

Pull request overview

This PR updates the plate simulation configuration to interpret the plate “elevation” input as a depth below topography, simplifying/removing the prior “relative locations / reference surface” workflow and aligning tests + UI with the new depth-based behaviour.

Changes:

• Reworked PlateOptions.center() to compute plate Z from topography at the survey centre (depth-based placement).
• Removed relative_locations, reference_surface, and reference_type from the plate simulation UI + tests.
• Updated synthetic defaults and multiple tests to match the new depth convention.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
tests/plate_simulation/runtest/sweep_test.py	Updates sweep test setup to use depth-style elevation and removes deprecated options.
tests/plate_simulation/runtest/gravity_test.py	Adjusts plate geometry inputs for new depth semantics and removes deprecated reference.
tests/plate_simulation/runtest/driver_test.py	Removes deprecated input fields; still contains an inconsistent negative “depth” test value.
tests/plate_simulation/models/plates_test.py	Makes assertions more robust with np.isclose; tweaks naming and replication expectations.
tests/plate_simulation/models/params_test.py	Adds coverage for new centre/depth logic; removes tests for deleted reference/relative behaviour.
simpeg_drivers/utils/synthetics/options.py	Updates default plate model parameters (dip/direction and elevation default).
simpeg_drivers/plate_simulation/uijson.py	Removes the old PlateSimulationUIJson Python schema file.
simpeg_drivers/plate_simulation/models/options.py	Implements new centre calculation using topography draping; removes old relative/reference logic.
simpeg_drivers/plate_simulation/models/events.py	Broadens Anomaly typing to accept Plate bodies.
simpeg_drivers/plate_simulation/driver.py	Updates plate instantiation to use the new center() signature and exposes topography earlier.
simpeg_drivers-assets/uijson/plate_simulation.ui.json	Removes relative/reference UI fields and relabels elevation as depth.

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[MatthieuCMira]

tests are not passing....

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.05%. Comparing base (bca4d6c) to head (eb70bf7).
⚠️ Report is 15 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #374      +/-   ##
===========================================
+ Coverage    89.57%   90.05%   +0.48%     
===========================================
  Files          128      127       -1     
  Lines         6409     6368      -41     
  Branches       797      795       -2     
===========================================
- Hits          5741     5735       -6     
+ Misses         462      428      -34     
+ Partials       206      205       -1     

Files with missing lines	Coverage Δ
simpeg_drivers/options.py	95.13% <ø> (-0.02%)	⬇️
simpeg_drivers/plate_simulation/driver.py	92.96% <100.00%> (-0.06%)	⬇️
simpeg_drivers/plate_simulation/models/events.py	100.00% <100.00%> (ø)
simpeg_drivers/plate_simulation/models/options.py	100.00% <100.00%> (+4.00%)	⬆️
simpeg_drivers/utils/synthetics/options.py	100.00% <ø> (ø)

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