fix: the PyPI page links the docs, issues and changelog, and a stale saved answer says the layout moves before 1.0

[FBumann]

Prompt: Also do this

It came with the four items of section 3 of #1752's checklist, "Before this PR merges: what the PyPI page shows", pasted below it.

Note

The following content was generated by AI.

The four items in section 3 of #1752's checklist. The PyPI page gets links to the docs, issues and changelog. The README's links resolve there. Two error messages drop "0.0.1aN". RELEASING.md stops promising tighter CI by 0.1.0.

What changed, gates, departures

Changes

• pyproject.toml: [project.urls] names Documentation, Repository, Issues and Changelog, as docs: the installation page and the PyPI project page say pip install mathspec, and the README's links resolve on PyPI energy-models/mathspec#707 did. It used to name only repository.
• README.md: the links to CONTRIBUTING.md and docs/about/prior-art.md are now absolute: GitHub for the first, Read the Docs for the second.
• src/specsolve/relational/parquet.py: both LayoutError messages say "The layout moves before 1.0" instead of "while the package is on 0.0.1aN". The docstring of test_an_answer_in_another_layout_is_refused_by_name follows. The test matches on the rewrite ("solve the model again and save it"), not on this clause.
• RELEASING.md, "Relaxed while in early development": it said "Tighten these before 0.1.0". It now says a Python matrix behind a gate job is the first thing to add back when CI is tightened, without a date. I changed the sentence rather than add the matrix. The interpreter is pinned once in [tool.pixi.dependencies], so a matrix needs a pixi feature per Python version. That is its own PR.
• CHANGELOG.md: this PR's line under ## Upcoming version.

Gates, run in a uv environment (dev + docs groups, gurobi and xpress extras), because pixi cannot be installed here:

• ruff check . and ruff format --check . pass.
• pytest -n auto: 4139 passed, 250 skipped, 1 xfailed.
• zensical build --strict: no issues.
• uv build, then twine check: passed. The wheel's metadata has the four Project-URL lines and no direct reference.
• python -m tools.changelog check and entry pass.

Departure from Part 2: one PR for four checklist items rather than one each. They are small, all serve the first PyPI page, and the checklist groups them. The type is fix, the topmost row, because of the messages in src/.

🤖 Generated with Claude Code

https://claude.ai/code/session_016Pv7LzSgzt7Yn2K3ioyJXw

[read-the-docs-community]

Documentation build overview

📚 specsolve | 🛠️ Build #34757766 | 📁 Comparing 8a0b9c8 against latest (a4be39a)

  🔍 Preview build  

1 file changed

± about/changelog/index.html

[codspeed]

Merging this PR will not alter performance

✅ 24 untouched benchmarks
⏩ 82 skipped benchmarks¹

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_{Comparing claude/confident-goodall-2iuw8n (8a0b9c8) with main (8c783ca)²}

Footnotes

1. 82 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on main (fef9c80) during the generation of this report, so 8c783ca was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩