Lets an admin disable rendering when no render node is available — users can't
start new renders and see a localized "service unavailable until <date>" message.
- Admin → فارم رندر → موتور رندر (RenderEngineAdmin): on/off toggle + fa/en message
+ optional Jalali "until" date; saved as one `render_service` Website Setting
(jsonb) via /v1/settings — no backend change, no migration.
- lib/render-service.ts: fetchRenderServiceStatus (fail-open) + renderServiceMessage
(locale + appends the date).
- Enforcement: POST /api/render returns 503 {code:render_disabled, messages} when off;
studio render page reads GET /api/render/service on mount → disables "شروع رندر"
and shows the banner, and handles the 503 on click.
- i18n: appAdminLayout.renderEngine (fa+en, parity 1045/1045). tsc + next build clean.
Verified: disabled setting → /api/render/service returns enabled:false.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
soroush.asadi
61ba526122