Revision History

Removed duplicate in-body wikilinks

Add wikilinks to table cells (1 new links)

Corrected wikilink existence flags

Replaced generic progression note with overview, beam variant table, build cost detail, and cross-links to sibling beams and base building

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 Wall Beam (planks)