[Enhancement] Copier Template: Github Workflows: Switch from exact cross-repo workflow versions to floating version.

[emcd]

/claude Please look at the Github workflow templates under template/.github/workflows and note how they call cross-repo workflows (maintained in this repository, under .github/workflows) at a specific version injected by Copier ({{ _commit }}). We would like to use a floating version tag instead of the exact version tag for calling cross-repo workflows so that they can be updated independently of copier update runs on the various repositories generated from the template. Ideally, we would have a semantic tagging scheme, like gha-1.0, gha-1.0.1, gha-1.1, etc... with the floating tag gha-1 pointing at the latest workflows release tag. We already do something similar in our documentation; see template/documentation/contribution.rst.jinja for details. Please propose the necessary changes to make this happen. (Only files under template/.github/workflows should need to be modified; please do not attempt modifications to any files under .github/workflows.)

[claude]

Claude finished @emcd's task —— View job • claude/issue-9-20250529_212903 • Create PR ➔

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Todo List

• Analyze reference example in template/documentation/contribution.rst.jinja
• Examine current workflow templates under template/.github/workflows
• Identify cross-repo workflow calls using {{ _commit }}
• Determine appropriate floating version tag scheme
• Update workflow templates to use floating version tags
• Commit changes to branch

Summary

Successfully switched GitHub workflow templates from exact commit versions to floating version tags.

Implementation:

• Replaced all {{ _commit }} references with gha-1 floating tag
• Updated 8 total cross-repo workflow references across 2 template files
• Following the semantic tagging scheme: gha-1.0, gha-1.0.1, gha-1.1, etc.
• The gha-1 tag will point to the latest workflows release in the gha-1.x series

Benefits:

• Workflows can now be updated independently of copier update runs
• Generated projects will automatically use the latest compatible workflow versions
• Maintains version stability while allowing for workflow improvements

Files modified:

• template/.github/workflows/tester.yaml.jinja (2 references)
• template/.github/workflows/releaser.yaml.jinja (6 references)

Cross-repo workflows now reference:

• emcd/python-project-common/.github/workflows/xrepo--tester.yaml@gha-1
• emcd/python-project-common/.github/workflows/xrepo--reporter.yaml@gha-1
• emcd/python-project-common/.github/workflows/xrepo--documenter.yaml@gha-1
• emcd/python-project-common/.github/workflows/xrepo--packager.yaml@gha-1
• emcd/python-project-common/.github/actions/python-hatch@gha-1

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