Artifacts & the DAG
What an artifact is, the workflow metagraph and its five sections of artifact types, the dependency edges that order them, and the coherence rules that keep them mutually consistent.
Epistemic Validation
How waypoint validate produces a signed, machine-checkable proof certificate instead of a single pass/fail bit — the proof tree, the S/R/Q reasoning tags, memoization, and the honest limits of the model.
The Authoring Workflow
The day-to-day loop — authoring artifacts in DAG order top-down, living with the cascade rule, the S3-canonical store model, and the role of a coding agent driving the loop through MCP tools.