ExaModelsCompiler: registration prerequisites

[sshin23]

Two blockers for registering ExaModelsCompiler as a subdir package, found by checking the AutoMerge guidelines before firing: the subdirectory has no LICENSE (AutoMerge inspects the subdir tree; the repo root's doesn't count), and [compat] bounds ExaModels and JuliaC are missing (required for all non-stdlib deps; Pkg/Random/Serialization/TOML are stdlibs and exempt). MIT copied from the repo root; ExaModels = "0.12", JuliaC = "0.3" (current General release is 0.3.8).

Once this merges — and once ExaModels 0.12.0's own registration (fired, in flight) lands in General so the dependency resolves — the registration is one comment: @JuliaRegistrator register subdir=ExaModelsCompiler.

🤖 Generated with Claude Code

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Benchmark Results

Relative timing: current / main  (values < 1.0 are improvements)

================================================================================
  backend-instance-param          |      obj     cons     grad      jac     hess
================================================================================
  CUDA-OPF-case1354               |    1.038    0.988    1.010    0.998    1.008
  CUDA-OPF-case14                 |    1.009    0.996    1.008    1.011    1.003
  CUDA-OPF-case30000              |    1.043    0.998    1.006    1.005    1.010
  CUDA-chain-10                   |    1.039    1.000    1.120    1.006    1.016
  CUDA-chain-100                  |    1.042    0.995    1.006    1.004    1.014
  CUDA-chain-1000                 |    1.030    0.997    1.009    1.003    1.017
  CUDA-elec-10                    |    1.117    1.009    1.008    1.002    1.005
  CUDA-elec-100                   |    0.931    1.005    1.004    1.001    1.004
  CUDA-elec-1000                  |    1.027    1.012    0.511    1.001    0.019
  CUDA-rosenrock-1000             |    1.016    1.029    1.013    1.051    1.009
  CUDA-rosenrock-10000            |    1.010    1.024    1.013    1.050    1.008
  CUDA-rosenrock-100000           |    1.022    1.023    1.015    1.043    0.580
--------------------------------------------------------------------------------
  AMDGPU-OPF-case1354             |    0.947    0.951    0.998    0.962    0.979
  AMDGPU-OPF-case14               |    0.982    0.967    1.041    0.963    0.956
  AMDGPU-OPF-case30000            |    0.956    0.953    0.955    0.990    1.000
  AMDGPU-chain-10                 |    0.937    0.968    0.984    0.968    0.971
  AMDGPU-chain-100                |    1.002    0.972    0.949    0.975    0.934
  AMDGPU-chain-1000               |    0.996    0.959    1.002    1.025    0.937
  AMDGPU-elec-10                  |    0.993    0.969    0.997    1.044    1.026
  AMDGPU-elec-100                 |    0.965    0.974    0.952    1.011    0.957
  AMDGPU-elec-1000                |    0.994    0.954    1.009    0.955    1.013
  AMDGPU-rosenrock-1000           |    1.035    0.962    1.012    1.049    1.015
  AMDGPU-rosenrock-10000          |    0.944    0.961    0.957    0.991    0.975
  AMDGPU-rosenrock-100000         |    0.628    0.925    0.964    1.044    1.505
--------------------------------------------------------------------------------
  nothing-OPF-case1354            |    1.013    0.931    1.001    1.009    0.723
  nothing-OPF-case14              |    1.017    0.962    1.031    1.023    6.454
  nothing-OPF-case30000           |    1.009    1.002    1.035    1.025    0.140
  nothing-chain-10                |    0.999    0.974    0.960    1.039    1.363
  nothing-chain-100               |    1.003    0.963    0.967    1.016    1.214
  nothing-chain-1000              |    1.038    0.948    0.980    0.998    2.153
  nothing-elec-10                 |    1.007    1.007    1.015    1.000    0.988
  nothing-elec-100                |    0.994    0.982    1.012    1.009    0.995
  nothing-elec-1000               |    1.001    0.996    1.006    1.005    1.011
  nothing-rosenrock-1000          |    1.000    0.972    1.008    0.962    0.650
  nothing-rosenrock-10000         |    1.000    0.992    0.999    0.996    0.182
  nothing-rosenrock-100000        |    0.981    1.000    0.994    1.001    1.001
================================================================================