docs: PRD rev1 review Q90 — Prettier-format the bundle, add rev0 archive README

Addresses CPS-PRD-REV1-REVIEW-Q90 findings F1 and F3 on PR #1491:

F1 (format gate): `prettier --write` on the 18 rev1 bundle documents.
Whitespace, table padding, list markers and emphasis delimiters only — a
normalized token comparison of every file before/after shows zero content
difference, so the ratified text is unchanged and no re-ratification applies.

F3 (rev0 relative links): the archived rev0 PRD stays byte-identical
(sha256 60cc2f98...36afdf verified) per GOV.1 archive-never-edit. A sibling
docs/PRDs/2026-08-26_PRD_rev0/README.md records the digest, the original
location, the owner disposition that the in-file links are intentionally
historical, and a resolution table for all 9 targets (11 occurrences), each
verified to exist. Future relocated archives ship the same README instead of
edited bytes.

F2 (test step) is investigated separately against the CI log.

docs/PRDs/2026-08-31_PRD_rev1/VIS.1-north-star.md

@@ -10,7 +10,6 @@ Successor text to rev0 Part I ([rev0 PRD](../2026-08-26_PRD_rev0/PRD.md) lines
 33–215, preserved there verbatim). Base text unchanged except marked **rev1**
 annotations; the decision registry moves to [[GOV.3-decision-map]].
 
-
 ### 1. What Mosaic Stack is (D1)
 
 Mosaic Stack is an **open-source, AI-first platform for people who want a
@@ -52,7 +51,7 @@ required); git tracking is always on locally.
 rights and data-access control, trusts with boundaries, exfiltration
 monitoring) is intentionally not fully designed. It is deferred, appears on the
 roadmap as a placeholder phase per D11, and nothing in v1 may foreclose it.
-*D3 as amended 2026-09-01 (Q-T1 ruling B):* federation milestones M1–M3
+_D3 as amended 2026-09-01 (Q-T1 ruling B):_ federation milestones M1–M3
 (Step-CA, enrollment, grants, mTLS auth guard, ScopeService, list/get/
 capabilities verbs) are **shipped but frozen** — present in code behind the
 `tier === 'federated'` gate, dormant since 2026-06-25, absent from the canonical
@@ -199,7 +198,6 @@ the merged change (pull + restart). Federation (D3 clause) remains
 deferred and unforeclosed. Implementation plan:
 docs/plans/2026-08-30_containerization.md.
 
-
 ---
 
 ## rev1 annotations (2026-08-31)