Add experimental steady-state computation for heterogeneous-agent models

Normann Rionrequested to merge
normann/dynare:ha-ss into master

Implements the heterogeneity.compute_steady_state MATLAB routine to compute steady states of models with rich heterogeneity.

Implementation

  • MATLAB: compute_steady_state.m MATLAB interface
  • MEX: Fortran implementation (compute_steady_state_tensor) in mex/sources/heterogeneity/
  • Calibration: Nonlinear solver using vendored MINPACK library in vendor/minpack/
  • Options: Comprehensive control over tolerances, iterations, and verbosity for each stage

Testing

  • tests/heterogeneity/ks_ss.mod: Test model for steady-state computation
  • test_compute_steady_state.m & test_complete_workflow.m: Full workflow validation

Documentation

  • Added heterogeneity_compute_steady_state command to user manual with all options
  • Marked as experimental feature

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