feat(deploy): production deployment setup and fixes

- Debian-based api image (bookworm-slim), docker/debian mirrors, prisma
  binaryTargets for openssl 3.0
- nginx: admin SPA under /admin, TLS via acme.sh (ZeroSSL) + auto-renewal
  cron, http->https redirect
- prisma: add origin_goods.delisted migration, sync missing schema
  (good_image/tag_font_color/good_tags), fix users.createdAt Timestamptz
- api: CORS wildcard reflection, helmet CORP cross-origin, price
  backfill in persistProductDetail, categoryIcon ancestor fallback,
  mediaByColor per-color gallery in public goods detail
- admin: /admin base path (vite + router)
- import-data.mjs: udt_name casting, serial sequence advance fix

.agents/skills/impeccable/scripts/detector/shared/page.mjs

@@ -1,7 +0,0 @@
-/** Check if content looks like a full page (not a component/partial) */
-function isFullPage(content) {
-  const stripped = content.replace(/<!--[\s\S]*?-->/g, '');
-  return /<!doctype\s|<html[\s>]|<head[\s>]/i.test(stripped);
-}
-
-export { isFullPage };