---
kind: shim
status: active
source_of_truth: true
current_rev: docs/PRDs/2026-08-31_PRD_rev1/
---

# PRD: Mosaic Stack

This file is a permanent shim, not the PRD body (GOV.1 lifecycle rule). The
project source of truth is the **current revision bundle**:

**[docs/PRDs/2026-08-31_PRD_rev1/](./PRDs/2026-08-31_PRD_rev1/PRD.md)** —
rev1, ratified 2026-09-01 (Jason Woltje). It consolidates the 2026-08-26 North
Star (D1–D15), the fleet north star, the agent-runtime L1/L2 contracts, and the
control-plane-surfaces findings into sectioned documents (AUTHN, AUTHZ, CLI,
DATA, GOV.1–5, HARN, PROV, ROLE, SEAT, SESS, UI, VIS) with a single decision
map and a closed open-questions list.

Revision bundles are frozen at ratification and never deleted. The prior
revision, rev0 (2026-08-26 North Star), is archived verbatim at
[docs/PRDs/2026-08-26_PRD_rev0/PRD.md](./PRDs/2026-08-26_PRD_rev0/PRD.md).
Updating the PRD means ratifying a new bundle under `docs/PRDs/` and repointing
`current_rev:` here; this path never changes.