feat: embed workspace_version in config/general.yaml

[Jammy2211]

Summary

Add a version: block to config/general.yaml with workspace_version: 2026.4.13.6 and a user-facing workspace_version_check: True override flag, so the new config-aware autoconf.workspace.check_version (PyAutoLabs/PyAutoNerves#101, now called from every import autolens) can resolve the workspace version from a canonical source. Previously this pipeline had neither version.txt nor a config-embedded version, so verify_workspace_versions.sh always SKIPped it. With this PR it joins the 6 main/HowTo workspaces in the standard version-pinning flow.

Setting workspace_version_check: False is the recommended bypass for users on main-branch clones, where main updates faster than library releases and mismatches are expected.

Scripts Changed

• config/general.yaml — add a version: block with workspace_version: 2026.4.13.6 and workspace_version_check: True

Upstream PR

• feat(workspace): config-aware version check with YAML bypass PyAutoNerves#101 — config-aware check_version (core change)
• feat: check workspace version on import PyAutoLens#484 — call check_version on import autolens
• feat(release): embed workspace_version in config/general.yaml PyAutoHands#70 — release pipeline writes the new YAML key; verify_workspace_versions.sh reads it

Test Plan

• python -c "import autolens" from this pipeline directory runs silently (no warning, no error)
• bash PyAutoBuild/verify_workspace_versions.sh reports this pipeline as ok (was SKIP before)

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