Planet-down cascade workshop (3 rounds, 5 agents): layer-by-layer
generation from empty world through population overlay, city planning,
and street rendering. Includes consultant review by Troblum.
Also commits: pre-Sprint-35 DB backup, Claude Code team-mode tmux
test log (team-test.md).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>