* ci: align workflows to .tmp/ model

- ci.yml: add paths filters on push/PR, remove excel marker (not applicable to ezplog)
- auto-tag.yml: restrict trigger to main only, replace tag_created+tags_updated outputs with single tag_action (none/update/create)
- publish-pypi.yml: remove skip_tests input and Run tests step, remove preview-mode guard on publish condition
- docs.yml: remove PyPI polling step, remove excel marker


* chore: upgrade minimum Python requirement from 3.11 to 3.13


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