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/PROV.1-providers.md

@@ -11,17 +11,18 @@ or local (Ollama, LM Studio, other).
 
 ## Provider configuration surface (WebUI page + CLI)
 
-| Control | Notes |
-|---|---|
-| provider selection | dropdown of supported providers |
-| name | user-chosen instance name (multiple named instances of one provider type are expected) |
-| auth mode | OAuth or API key — the account itself lives in [[AUTHN.1-auth-accounts]] |
-| local provider setup | endpoint/port for Ollama, LM Studio, other local providers |
-| activate / deactivate | inactive providers are not selectable downstream |
+| Control               | Notes                                                                                  |
+| --------------------- | -------------------------------------------------------------------------------------- |
+| provider selection    | dropdown of supported providers                                                        |
+| name                  | user-chosen instance name (multiple named instances of one provider type are expected) |
+| auth mode             | OAuth or API key — the account itself lives in [[AUTHN.1-auth-accounts]]               |
+| local provider setup  | endpoint/port for Ollama, LM Studio, other local providers                             |
+| activate / deactivate | inactive providers are not selectable downstream                                       |
 
 Provider records are runtime state (Postgres-owned, projected). Credentials
 never enter provider records; they live with the credential broker
 ([[AUTHN.1-auth-accounts]]).
+
 ## E2 inputs (triage 2026-08-31; see [[GOV.2-docs-inventory]])
 
 **Canonical ground truth**: `DEVELOPER-GUIDE/architecture/decisions/mos-runtime-portability-m1.md`