Add a little helper to CalculusPatch to make a FieldPlotter

[alexfikl]

This also has a bunch of typing fixes, so it looks bigger than it is.

For the actual functionality: just added a points=None to the FieldPlotter constructor so that it can take the (possibly non-uniform) grid from CalculusPatch instead of making its own.

[Copilot]

Pull request overview

Adds a way to build a FieldPlotter directly from a CalculusPatch grid (including non-uniform grids) and updates typing/documentation/CI to support the new optype-based annotations.

Changes:

• Extend FieldPlotter to optionally accept an explicit grid (points=None -> pass provided points through).
• Add CalculusPatch.make_field_plotter() and deprecate CalculusPatch.plot() in favor of it.
• Typing/doc/CI updates (optype annotations, Sphinx nitpick ignores, basedpyright baseline adjustments, CI installs optype).

Reviewed changes

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

Show a summary per file

File	Description
sumpy/visualization.py	Adds points support to FieldPlotter and tightens type annotations.
sumpy/point_calculus.py	Introduces make_field_plotter(), deprecates plot(), and improves typing/docs.
sumpy/toys.py	Removes a couple of type-ignore comments as part of typing cleanup.
sumpy/symbolic.py	Removes an unnecessary type-ignore on an import assignment.
doc/conf.py	Adjusts Sphinx nitpick ignores / missing-reference aliases for optype-based types.
.github/workflows/ci.yml	Installs optype in the basedpyright job environment.
.basedpyright/baseline.json	Updates the type-checker baseline to reflect the new typing state.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[inducer]

Thanks!