The output is a context.md file — a structured record of every decision with your reasoning. This file gets injected into all downstream work: planning, execution, verification, everything. When the agent is implementing task 4 of slice 2, it still has your discuss-phase decisions in context. It doesn't re-debate them. It doesn't silently make a different choice because it forgot what you said. The decisions are locked and flow through the entire pipeline.
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This feels like one or more documentation context graph -- document. Cool thing is it auto-injects for hierarchically descendent work when you do decomposing work into narrowly scoped work