Preserve hypercylindrical subdivision subclasses

[FlorianPfaff]

Bug

HypercylindricalStateSpaceSubdivisionDistribution.from_distribution() and from_function() were static factories that hard-coded the base class. Because convert_distribution(source, TargetSubclass, ...) dispatches through the requested target class's inherited from_distribution, conversions to a subclass silently returned the base HypercylindricalStateSpaceSubdivisionDistribution instead.

The same subtype loss occurred for direct inherited TargetSubclass.from_function(...) calls.

Fix

• convert both factories to classmethods
• dispatch from_distribution through cls.from_function(...)
• construct the final subdivision distribution through cls(...)
• leave grid construction, conditional normalization, integration, and all numerical behavior unchanged

Regression coverage

Adds focused NumPy/SciPy-backed regressions for:

1. inherited from_function(...) preserving the requested subclass;
2. convert_distribution(..., TargetSubclass, no_of_grid_points=...) preserving the requested subclass.

Scope

• based directly on current main at baac3b1736bb8e81eafc1e3f69e10104636103b9
• 2 commits ahead, 0 behind at PR creation
• production diff: 6 additions / 5 deletions in one file
• no overlap found with the currently open bug-fix PRs Fix range-bearing Jacobian per-call overrides #5354–Align covariance logdet regression with PSD validation #5370

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Max errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no		no	4.28s
✅ JSON	prettier	7	0	0		0	0.52s
✅ JSON	v8r	7		0		0	2.5s
✅ MARKDOWN	markdownlint	68	0	0		0	1.62s
✅ MARKDOWN	markdown-table-formatter	68	0	0		0	0.25s
✅ PYTHON	black	1989	16	0		0	34.98s
✅ PYTHON	isort	1989	28	0		0	1.59s
✅ REPOSITORY	betterleaks	yes		no		no	0.88s
✅ REPOSITORY	checkov	yes		no		no	21.87s
✅ REPOSITORY	git_diff	yes		no		no	0.13s
✅ REPOSITORY	secretlint	yes		no		no	54.17s
✅ REPOSITORY	syft	yes		no		no	1.68s
✅ REPOSITORY	trivy-sbom	yes		no		no	1.35s
✅ YAML	prettier	11	0	0		0	0.47s
✅ YAML	v8r	11		0		0	9.49s
✅ YAML	yamllint	11		0		0	0.4s

Notices

⚠️ Your configuration references items that have been removed from MegaLinter and are ignored: MAKEFILE_CHECKMAKE. See Removed linters to find their replacements.

See detailed reports in MegaLinter artifacts

Your project could benefit from a custom flavor, which would allow you to run only the linters you need, and thus improve runtime performances. (Skip this info by defining FLAVOR_SUGGESTIONS: false)

• Documentation: Custom Flavors
• Command: npx mega-linter-runner@10.0.0 --custom-flavor-setup --custom-flavor-linters PYTHON_BLACK,PYTHON_ISORT,COPYPASTE_JSCPD,JSON_V8R,JSON_PRETTIER,MARKDOWN_MARKDOWNLINT,MARKDOWN_MARKDOWN_TABLE_FORMATTER,REPOSITORY_CHECKOV,REPOSITORY_GIT_DIFF,REPOSITORY_BETTERLEAKS,REPOSITORY_SECRETLINT,REPOSITORY_SYFT,REPOSITORY_TRIVY_SBOM,YAML_PRETTIER,YAML_YAMLLINT,YAML_V8R

Show us your support by starring ⭐ the repository