HydroPol2D v1.16.0

HydroPol2D v1.16.0

Bundled Terrain Runtime

• Bundles the required TopoToolbox v2.4-based source subset under
  third_party/topotoolbox_lite/.
• Removes the user-facing external TopoToolbox setting from bypass
  configuration and spreadsheet inputs.
• Registers HydroPol2D functions and the bundled runtime through
  hydropol2d_add_runtime_paths.
• Keeps the existing GRIDobj, FLOWobj, and STREAMobj interfaces so
  terrain preprocessing results remain consistent with the prior workflow.
• Retains three documented, unmodified later upstream methods needed for
  current MATLAB smoothing compatibility; see
  third_party/topotoolbox_lite/UPSTREAM.md.

Requirements and Licensing

• Mapping Toolbox and Image Processing Toolbox remain required.
• Optimization Toolbox is required only when DEM smoothing is enabled.
• Parallel Computing Toolbox remains optional for GPU execution.
• HydroPol2D and the bundled TopoToolbox source are distributed under GPLv3;
  see LICENSE and third_party/NOTICE.md.

Upgrade Notes

Remove any previous addpath commands for an external TopoToolbox copy. Run
HydroPol2D_V115.m from the repository root, or use a supported case runner.