plan-pipeline-eng-review
/plan-pipeline:eng-review: Engineering Architecture Gate
Post-direction, pre-implementation command. Takes validated product direction and returns a buildable technical spec with diagrams. Forces the system to think through architecture before a single line of implementation code is written.
Use after /plan-pipeline:ceo-review has locked direction. Still in plan mode.
The Problem This Solves
Once product direction is locked, the next failure mode is vague architecture. "The system will handle it" is not a plan. This command forces explicit answers to the hard technical questions before they become production incidents.
The key unlock: forcing diagram generation. Diagrams surface hidden assumptions that prose keeps vague. A sequence diagram makes you specify who calls what. A state machine makes you enumerate every failure mode explicitly.