feat(approval): Approval Workflow v2 Phase 2 — admin UI reviewer queue + toggle

Phase 2 admin UI на скелете Phase 0/1 (e438c4c, 2020af9). Делает workflow
end-to-end usable: reviewer'ы могут approve/reject через UI; admins
включают approval_required per-dict через checkbox.

API surface (admin-ui):
- types: DraftStatus, DraftOperation, DraftResponse, SubmitDraftRequest,
  ReviewQueuePage. + DictionaryDefinition: approvalRequired, approvalMinRole.
- queries (react-query):
  * useReviewQueue (page, size) — global queue, refetch 30s.
  * useDraft(id) — single draft for diff drawer.
  * useLiveRecord(dict, bk) — current live record for side-by-side comparison.
- mutations:
  * useSubmitDraft(dict) — POST /dictionaries/{n}/records/drafts
  * useApproveDraft() — POST /drafts/{id}/approve
  * useRejectDraft() — POST /drafts/{id}/reject (reason required)
  * useWithdrawDraft() — DELETE /drafts/{id}

New /reviews route:
- Table queue: dict, business_key, operation badge, maker, submitted_at.
- Click "Просмотр" → side-by-side drawer:
  * left: current live (если есть; для CREATE — placeholder).
  * right: proposed (или CLOSE notice).
  * maker comment chip если есть.
  * Reviewer comment input + Approve / Reject buttons.
  * Reject disabled пока comment пустой (mirror's backend 400).
- Auto-invalidates на success — queue refresh, list updates.
- Nav link "Согласования" в header.

DictionaryEditorDialog Metadata tab:
- New checkbox "Требовать approval (maker-checker)" — orbit/8 styled
  (отделимо от Redis projection card visually).
- При checked → shown approval_min_role TextInput (e.g. "ordinis:internal").
- payload sends approvalRequired + approvalMinRole.

i18n RU/EN:
- nav.reviews, reviews.{title,description,empty,queueTotal_*,col.*,
  action.*, drawer.*}
- schema.approvalRequired.{label,hint}, schema.approvalMinRole.{label,hint}
- Plurals для RU queueTotal (one/few/many/other).

Verify:
- pnpm tsc --noEmit: clean.
- pnpm test (vitest): 89/89 PASS.
- pnpm build: clean.
- routeTree.gen.ts auto-regenerated с /reviews.

Phase 3 (next session):
- e2e tests: full flow maker submit → checker approve → record live + outbox event.
- e2e: reject keeps draft, doesn't publish.
- e2e: self-approve blocked (no_self_approve constraint).
- e2e: two pending drafts на one business_key blocked (one_pending_per_key).
- Per-dict opt-in soak: 1-2 dicts (например ground_station) с
  approval_required=true в staging.

ordinis-admin-ui/src/routes/__root.tsx

@@ -58,6 +58,13 @@ function RootLayout() {
             >
               {t('nav.search')}
             </Link>
+            <Link
+              to="/reviews"
+              className="text-carbon hover:text-ultramarain"
+              activeProps={{ className: 'text-ultramarain font-medium' }}
+            >
+              {t('nav.reviews')}
+            </Link>
           </nav>
           <div className="ml-auto flex items-center gap-3">
             <LanguageSwitch