PR #TBD — v0.21.0 Release

The Broader Goal at the End of the Previous PR

[What was the stated/understood goal before this work started?]

Strategic Shifts in This PR (if any)

[What changed in the broader strategy? What moved the goalpost and why?]

What This PR Shipped

[Deep technical description: commands, key implementation decisions, data structures, test approach]

Brainstorm Visuals Used

[Links to any HTML brainstorm files in docs/brainstorm/ that informed decisions in this PR]

What This Achieved on the Path to Autonomy

[Specific ways this PR advances the eventual goal of autonomous multi-agent dispatch]

Strategic Note: The Goal at the End of This PR

[The new goalpost, as understood after this PR's decisions]