The gap planning artifacts close
Before planning artifacts, three forward-producing layers existed:
- architect - produces "what to build"
- orchestration-planner - produces "how to decompose it"
- engineer - implements the units
What was missing: a committed answer to "what problem are we solving and how will we know it is done?"
Without that commitment, multi-unit fan-out and cross-session resume drifted - each engineer spawned against an informal interpretation rather than a locked problem statement, success criteria, and verification plan.
Also missing: operator participation in framing. The Brief was conductor-synthesized, not operator-negotiated. The /ds-brief command adds operator negotiation before the architect spawns.
Planning artifacts add the missing layer: a gate that commits to the framing before the first engineer spawns, keeping that commitment alive through fan-out and resume.