Advance development after v0.2.4 - #21

Summary

• advance package development to 0.2.5.dev0 and regenerate the PyPI description against main
• mark the v0.2.4 quality record as released
• record the immutable tag, original Trusted Publishing run, verified recovery run, public hashes and independent clean install
• document the post-release HTML-banner verifier fixes under Unreleased

Release evidence

• release commit: 57dec193af88b462dcc41d82fc6fecb813e161fd
• original tag run: 30522484949
• verified recovery run: 30524088015
• wheel SHA-256: 3f5a239bbbd2f85217cf11f691fbb63f647092f67b82da4de38bd6907c5ab0f1
• sdist SHA-256: 03f0e844df2c91deed5c211cdd2dd598d22f03d59d99cd8e792a58211c0b2296

Validation

• 91 focused packaging/release-verifier tests
• ruff check and format check
• mypy
• Markdown/link and generated PyPI-description checks
• python -m build and twine check
• independent no-cache Python 3.10 public install and doctor
• frozen benchmark SHA-256 unchanged