Summary

Display workflow tags on each tile in the workflow library browser, making it easier to identify workflow categories at a glance.

Tags are shown at the bottom of each workflow tile as "Tags: tag1, tag2, ..." and only appear when the workflow has tags assigned.

Related Issues / Discussions

Follow-up enhancement to #8673 (Tagged workflow browser)
#8697

QA Instructions

1. Open the Workflow Library
2. Navigate to "Your Workflows"
3. Verify that workflows with tags display them at the bottom of the tile
4. Verify that workflows without tags don't show the tags line

Merge Plan

None - straightforward UI enhancement.

Checklist

• The PR has a short but descriptive title, suitable for a changelog
• Tests added / updated (if applicable)
• ❗Changes to a redux slice have a corresponding migration
• Documentation added / updated (if applicable)
• Updated What's New copy (if doing a release after this PR)