feat: promote Python 3.14 to supported (matrix, classifiers, banner)

[Jammy2211]

Overview

Python 3.14's blocker is fixed and merged (PyAutoFit#1439 / PyAutoFit#1437 — forkserver default start method; the previously-failing factor-graph tutorial completes end-to-end on 3.14.4). This task performs the promotion follow-ups so 3.14 is tested and advertised: required CI matrix legs, classifiers, and the import-time banner.

Plan

• PyAutoHands python_matrix.yml: promote 3.14 into the required unit matrix and the workspace smoke matrix; delete the now-redundant non-required experimental_python_314 job; drop allow-prereleases.
• Add the Programming Language :: Python :: 3.14 classifier to PyAutoNerves, PyAutoArray, PyAutoFit, PyAutoGalaxy, PyAutoLens (requires-python >=3.12 unchanged).
• PyAutoNerves: add (3, 14) to _RECOMMENDED_PYTHON_VERSIONS so 3.14 stops warning as experimental; derive the banner's supported-version strings from the constant.
• Evidence: workflow_dispatch the python matrix after merge and confirm the 3.14 legs are green.

Detailed implementation plan

Affected Repositories

• PyAutoHands (primary — matrix)
• PyAutoNerves (classifier + banner), PyAutoArray, PyAutoFit, PyAutoGalaxy, PyAutoLens (classifiers)

Branch Survey

Repository	Current Branch	Dirty?
./PyAutoHands	main (current)	clean
./PyAutoNerves	main (current)	clean
./PyAutoArray	main (current)	clean
./PyAutoFit	main (current, incl. #1439)	clean
./PyAutoGalaxy	main (current)	clean
./PyAutoLens	main (current)	clean

Suggested branch: feature/py314-promotion

Implementation Steps

1. PyAutoHands/.github/workflows/python_matrix.yml: python-version: ['3.12', '3.13', '3.14'] in the required unit matrix and the workspace smoke matrix; remove the experimental_python_314 job and its explanatory comment; remove allow-prereleases: true.
2. Five pyproject.tomls: add "Programming Language :: Python :: 3.14" after the 3.13 classifier.
3. PyAutoNerves/autonerves/__init__.py: _RECOMMENDED_PYTHON_VERSIONS = {(3, 12), (3, 13), (3, 14)}; replace the hardcoded "3.12 and 3.13" / "3.12 or 3.13" / "3.12/3.13" strings with strings derived from the sorted constant. Update any banner unit tests in test_autonerves.
4. Per-repo PRs (pending-release on the five libraries); PyAutoHands PR plain.
5. Post-merge: dispatch python_matrix.yml, confirm 3.14 unit + smoke legs green; report.

Key Files

• PyAutoHands/.github/workflows/python_matrix.yml
• PyAuto{Nerves,Array,Fit,Galaxy,Lens}/pyproject.toml
• PyAutoNerves/autonerves/__init__.py

Original Prompt

Click to expand starting prompt

See PyAutoMind/draft/feature/libraries/python_314_promotion.md — original request: "do all follow ups now" (follow-ups from PyAutoFit#1437/#1439, merged 2026-07-31).

[Jammy2211]

Shipped and proven. All six PRs merged (PyAutoHands#220, PyAutoNerves#145, PyAutoArray#429, PyAutoFit#1440, PyAutoGalaxy#544, PyAutoLens#683). Evidence: python_matrix dispatch run 30646078121 concluded success with zero non-green jobs — 15/15 unit legs (3.12/3.13/3.14 × five libraries) and 9/9 workspace smoke legs (3.12/3.13/3.14 × three workspaces), including the 3.14 autofit_workspace smoke leg that runs the formerly-failing overview_1_the_basics.py. Python 3.14 is now required-tested, classified, and banner-silent.