feat(workspace): config-aware version check with YAML bypass

[Jammy2211]

Summary

Extend check_version so workspace/library version mismatches surface on every script run (via check_version(__version__) calls landing in PyAutoFit, PyAutoGalaxy, and PyAutoLens), not just welcome.py. The version is now read from config/general.yaml's version.workspace_version first — so the version travels with the user's config directory even when scripts are copy-pasted out of the workspace root — with version.txt retained as a legacy fallback. A new version.workspace_version_check: False YAML flag mirrors the existing python_version_check pattern and lets users on main-branch workspace clones (where mismatches are expected because main updates faster than releases) opt out without an env var.

Tracking: #100

API Changes

check_version is unchanged in signature but its resolution and bypass behaviour are extended:

• New source-of-truth precedence: config/general.yaml → version.txt → warn.
• New bypass: version.workspace_version_check: False in general.yaml.
• New error and warning messages explicitly point users at the YAML override and call out the main-branch case.

See full details below.

Test Plan

• pytest test_autoconf/test_workspace.py — 14 tests cover YAML source, bypass flag, fallback, mismatch, unparseable YAML
• pytest test_autoconf/ — full suite stays green
• Manual: import a downstream library from a workspace dir → no warning; from /tmp → warning text mentions YAML override and main branch
• Manual: synthesise a mismatch (workspace_version: 2025.1.1.1 in a tmp config) → error renders with main-branch guidance

Full API Changes (for automation & release notes)

Changed Behaviour

• autoconf.workspace.check_version(library_version, workspace_root=None) — now reads <workspace_root>/config/general.yaml's version.workspace_version as the primary source, falling back to <workspace_root>/version.txt. Honours version.workspace_version_check: False in general.yaml as a bypass (in addition to the existing PYAUTO_SKIP_WORKSPACE_VERSION_CHECK=1 env var). YAML wins if both sources exist and disagree. Warning and error messages rewritten to surface both bypass mechanisms and the main-branch use case.

Migration

• No call-site changes required. Existing callers (welcome.py, the new library __init__.py calls landing in PyAutoFit/Galaxy/Lens) work unchanged.
• Users on main-branch workspace clones who hit the new mismatch error should add to config/general.yaml:

  version:
    workspace_version_check: False

🤖 Generated with Claude Code

[Jammy2211]

Workspace PRs (paired with this library change):

• feat: embed workspace_version in config + drop welcome.py duplicate check autolens_workspace#112
• feat: embed workspace_version in config + drop welcome.py duplicate check autofit_workspace#48
• feat: embed workspace_version in config + drop welcome.py duplicate check autogalaxy_workspace#51
• feat: embed workspace_version in config + drop welcome.py duplicate check HowToFit#4
• feat: embed workspace_version in config + drop welcome.py duplicate check HowToGalaxy#4
• feat: embed workspace_version in config + drop welcome.py duplicate check HowToLens#5
• feat: embed workspace_version in config/general.yaml euclid_strong_lens_modeling_pipeline#10

All 7 add version.workspace_version + workspace_version_check to config/general.yaml; the 6 with a welcome.py also drop the now-redundant check_version call there. Library PRs in this set must merge first — workspace PRs would otherwise hit the new mismatch error against an older installed library on main.