Revision History

Removed duplicate in-body wikilinks

Corrected wikilink existence flags

Expanded intro, added material tier and structural-role properties, plan source, log-tier sibling pieces table, and placement tips with wikilinks

Version-drift reconcile: backfill revision at v2 (article was at v2, prior rev_max=1)

Removed redundant H1 heading from article body

Cleaned article wording and added utility details

Added icon image

Created article for Beam (log)