chore(python): back the package with the Rust engine and release 0.7.0

[shps951023]

Summary

The Python package now renders through the Rust MiniPdf engine instead of the pure Python renderers, and its version follows the Rust core at 0.7.0.

Changes

• Add a PyO3 binding crate at \minipdf-python/native/\ exposing \minipdf._native\ (convert to PDF/path/bytes, font registration). It calls
  egister_system_fonts()\ per conversion, matching the Node.js binding.
• Switch \minipdf-python/pyproject.toml\ to the maturin build backend (mixed layout, abi3 for Python 3.10+) so \pip install\ builds the Rust extension; pure Python renderers remain as a fallback when the extension is not importable.
• Prefer the native engine in \�pi.py\ while keeping the existing error semantics.
• Add \scripts/Build-Python-Native.ps1\ and wire the Python visual benchmark build step to it.
• Update \python-ci.yml\ with a Rust toolchain step.
• Rework \pypi-publish.yml\ to build wheels on Linux, Windows, and macOS (x64 and arm64) plus an sdist, and publish them all through trusted publishing.
• Refresh xlsx/pptx test fixtures to real OOXML namespaces and shape/txBody structure so tests pass under both engines.
• Bump versions to 0.7.0 (pyproject, _init_.py, native crate, version test).

Validation

• 24 tests pass with the native extension and with the pure Python fallback; ruff and mypy pass.
• A wheel built locally installs into a clean venv and converts a real fixture byte-identically to the Rust CLI (same SHA-256).
• \python -m build\ produces both sdist and abi3 wheel; twine check passes.

Summary by CodeRabbit

• New Features

  • Python conversions now use the Rust-backed engine when available, improving native performance and consistency.
  • Added native support for PDF conversion, custom font registration, and retrieving registered fonts.
  • Packages can build the native engine automatically during installation across supported platforms.
  • Pure Python rendering remains available as a reduced-feature fallback.

• Bug Fixes

  • Unsupported input formats now raise a clear error instead of failing silently.

• Documentation

  • Updated Python package documentation to explain native engine usage and setup.

• Chores

  • Updated the Python package version to 0.7.0.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 3787e20 and 91cf716.

⛔ Files ignored due to path filters (1)

• minipdf-python/native/Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (15)

• .github/workflows/pypi-publish.yml
• .github/workflows/python-ci.yml
• .gitignore
• FEATURE_PARITY.md
• minipdf-python/README.md
• minipdf-python/native/Cargo.toml
• minipdf-python/native/src/lib.rs
• minipdf-python/pyproject.toml
• minipdf-python/src/minipdf/__init__.py
• minipdf-python/src/minipdf/_native.pyi
• minipdf-python/src/minipdf/api.py
• minipdf-python/tests/helpers.py
• minipdf-python/tests/test_api.py
• scripts/Build-Python-Native.ps1
• scripts/Invoke-LanguageVisualBenchmark.ps1

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