Added
- New `LobeMeasurer` tool in the `microwave` plugin that locates lobes in antenna patterns and calculates lobe measures like half-power beamwidth and sidelobe level.
- Validation step that raises a `ValueError` when no frequency-domain monitors are present, preventing invalid adjoint runs.
- Metal surface roughness models: modified Hammerstad, Huray Snowball, and Cannonball-Huray.
Changed
- Dependencies for the `design` plugin can now be installed via `pip install tidy3d[design]`.
Fixed
- Bug in `LayerRefinementSpec` that refines grids outside the layer region when one in-plane dimension is of size infinity.
- Querying tasks was sometimes erroring unexpectedly.
- Fixed automatic creation of missing output directories.
- Bug in handling of tuple-type gradients that could lead to empty tuples or failing gradient calculations when differentiating w.r.t. (for instance) `td.Box.center`.
- Bug causing incorrect field projection results when multiple projection monitors with numerous sampling points were used.
- Improved accuracy for normal E-field components in mode solver at microwave frequencies.
- Deleting tasks using `web.delete(task_id)` would error when deleting tasks in the tidy3d root folder and others would not get completely removed in the Web GUI.