ephemerides-spectral 0.31.0: drop the PyPI-facing README Status banner

[lemonforest]

Remove the bold Status: v0.31.0 — numpy-FREE capstone … banner line under the H1 of the PyPI-facing README (the line visible on test.pypi.org). It duplicates the per-version ## Status section it points to and clutters the package landing page; the subtitle now flows straight into ## Overview.

The README-freshness guard test_readme_status_banner_matches_package_version is relaxed — the banner is now optional: present ⟹ must equal __version__ (no silent drift if re-added), absent ⟹ fine. The ## Status section's *(current)* marker stays the enforced current-version stamp (separate test, unchanged).

Pre-publish, doc-only. Nothing has shipped to PyPI for 0.31.0 yet — the pypi environment deployment is still waiting. After this merges, the ephemerides-spectral-v0.31.0 tag will be re-cut at the new merge commit so the live publish picks up the banner-free README. Version unchanged; no code / ABI change (ES_ABI_VERSION = 10).

🤖 Generated with Claude Code

[github-actions]

📋 ephemerides-spectral docs hygiene advisory

This is a soft warning — the build is green either way. Reviewing the items below before merge keeps the PyPI-facing docs surface aligned with the code. Add [skip-docs-check] to the PR body to silence on cosmetic diffs.

Drift detected

Stale Status: banner in ephemerides_spectral_research_notebook.md (says v0.29.0, version.py says v0.31.0)

docs/antikythera-maths/ephemerides_spectral_research_notebook.md contains Status: v0.29.0 near the top of the file, but version.py is at v0.31.0. The readthedocs.io rendering currently displays the stale banner. Bump the inline version before merge (any historical-context blockquote can stay verbatim). The detection regex is \bStatus[:\s\*]+v(\d+\.\d+\.\d+) — refactoring the banner format to bypass that pattern will silently disable this check.

Watched docs surface (5 files)

• ✅ touched — python/README.md (PyPI README)
• ⬜ not touched — python/CHANGELOG.md (package, PyPI-rendered)
• ⬜ not touched — CHANGELOG.md (project)
• ⬜ not touched — ROADMAP.md
• ⬜ not touched — ephemerides_spectral_research_notebook.md

Generated by .github/workflows/ephemerides-spectral-docs-check.yml. See the workflow header comment for category definitions.