[Sprint 19] Merge main into dev to unblock release PR #352

[mpaulosky]

Summary

• Merge origin/main into dev through a squad/* branch so release PR [RELEASE] Sprint 19 — Polish, Markdown Editor & Categories #352 becomes conflict-free.

Done when

• squad/353-resolve-release-pr-352-conflicts is merged into dev
• Release PR [RELEASE] Sprint 19 — Polish, Markdown Editor & Categories #352 is mergeable again
• Release PR [RELEASE] Sprint 19 — Polish, Markdown Editor & Categories #352 is merged, or the remaining blocker is documented

[github-actions]

📋 Assigned to Aragorn (Lead / Architect)

Issue: #355 — [Sprint 19] Merge main into dev to unblock release PR #352

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Aragorn, work on issue #355