v0.4.36 — Fix anylabeling-gpu install (#227); CI test gate

Summary

This release fixes anylabeling-gpu, which has shipped broken since 0.4.30 (#227). It also lands a cross-platform CI test gate that prevents the next regression from hitting PyPI.

If you hit ValueError: assignment destination is read-only at startup with an older anylabeling-gpu, upgrade with:

pip install -U anylabeling-gpu

What changed

Fixes

• anylabeling-gpu is publishable again — the setup.py shim that renamed the package was silently rejected by PEP 621, so every GPU tag from 0.4.30 onward produced an anylabeling-*.whl PyPI rejected. The GPU workflow now seds pyproject.toml directly before python -m build and asserts the wheel name.
• Resource regeneration scripts work again — scripts/compile_languages.py and scripts/generate_languages.py were calling pyrcc5 / pyrcc6, neither of which exists in PyQt6. Switched to pyside6-rcc + pyside6-lrelease with PyQt6 import rewriting.

CI

• New .github/workflows/tests.yml runs the unit suite on a 9-cell matrix (Ubuntu/Windows/macOS × Python 3.11/3.12/3.13).
• Both PyPI publish workflows and the binary-release workflow gate on the matrix via needs: test. A red matrix blocks the upload.
• Action versions bumped (checkout → v4, setup-python → v5, setup-miniconda → v3).

Dependencies

• Floors raised to versions verified to install cleanly on every supported Python:
  • natsort >= 8.4.0, Pillow >= 11.0.0, termcolor >= 2.4.0, PyQt6 >= 6.7.0, osam >= 0.4.0
• Added a huggingface_hub >= 0.24.0 floor (was unconstrained).
• Added PySide6-Essentials to the [dev] extras (only used to regenerate Qt resources).

Docs

• Added CLAUDE.md with an architecture overview and a 6-step pre-publish playbook.
• Rewrote .cursorrules to mirror it.

PyPI

• anylabeling==0.4.36
• anylabeling-gpu==0.4.36 — first working release since 0.4.29

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