ci: align Python support matrix with 3.12 floor

[Jammy2211]

Summary

• Make Python 3.12 and 3.13 the exact required weekly unit-test matrix.
• Make Python 3.12 and 3.13 the exact required workspace-smoke matrix and remove obsolete below-floor/JAX conditionals.
• Add a separate five-library Python 3.14 unit-evidence matrix with continue-on-error, preserving visibility without making 3.14 required or weakening the supported-version jobs.
• Update the legacy autohands verify_install shim help for Heart's A-F checks and --find-links rehearsal path.

Tracks #206

Test Plan

• Focused workflow-contract tests: 4 passed.
• Full PyAutoHands suite on Python 3.12: 240 passed.
• Full PyAutoHands suite on Python 3.13: 240 passed.
• YAML parsing and git diff --check pass.
• Isolated local Python 3.14 evidence: PyAutoNerves 154 passed; PyAutoArray 929 passed; PyAutoFit 1557 passed/3 skipped; PyAutoGalaxy 999 passed/1 skipped; PyAutoLens 488 passed.
• Independent Claude Opus 5 max-effort review: CLEAN on exact head f2e990e0929d929ff84ccd21ad5bf2af92f9181e.

Release Status

No release, tag, upload, or yank is included or authorized. The Python 3.14 evidence remains explicitly non-required while its known workspace-level factor-graph regression is outstanding.

Generated by the PyAutoLabs agent workflow.