Improve explorer SSR, hydration, compaction, and smoke coverage.

Defer heavy getServerSideProps on home, operator, addresses, and wallet to cut TTFB; centralize locale-safe formatters with client-only relative times; add compact ops UX, bridge/operator relay pagination, and Playwright route/scroll smoke in deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/deploy-next-frontend-to-vmid5000.sh

@@ -233,6 +233,27 @@ if [[ -f "${SMOKE_SCRIPT}" ]]; then
     echo "WARN: institutional smoke failed — see ${SMOKE_SCRIPT}" >&2
   }
 fi
+
+SMOKE_ROUTES="${FRONTEND_ROOT}/scripts/smoke-routes.mjs"
+SMOKE_SCROLL="${FRONTEND_ROOT}/scripts/smoke-scroll-height.mjs"
+if [[ -f "${SMOKE_ROUTES}" ]] && [[ "${EXPLORER_SKIP_ROUTE_SMOKE:-}" != "1" ]]; then
+  echo ""
+  echo "== Playwright route smoke (optional) =="
+  if (cd "${FRONTEND_ROOT}" && npm exec -- playwright install chromium >/dev/null 2>&1 && BASE_URL="${EXPLORER_BASE:-https://explorer.d-bis.org}" npm run smoke:routes); then
+    echo "Route smoke: PASS"
+  else
+    echo "WARN: route smoke skipped or failed — set EXPLORER_SKIP_ROUTE_SMOKE=1 to silence; run npm install in frontend first" >&2
+  fi
+fi
+if [[ -f "${SMOKE_SCROLL}" ]] && [[ "${EXPLORER_SKIP_SCROLL_SMOKE:-}" != "1" ]] && [[ "${EXPLORER_SKIP_ROUTE_SMOKE:-}" != "1" ]]; then
+  echo ""
+  echo "== Playwright scroll-height smoke (optional) =="
+  if (cd "${FRONTEND_ROOT}" && BASE_URL="${EXPLORER_BASE:-https://explorer.d-bis.org}" npm run smoke:scroll); then
+    echo "Scroll-height smoke: PASS"
+  else
+    echo "WARN: scroll-height smoke failed — set EXPLORER_SKIP_SCROLL_SMOKE=1 to silence" >&2
+  fi
+fi
 echo ""
 echo "Nginx follow-up:"
 echo "  Switch the explorer server block to proxy / and /_next/ to 127.0.0.1:${FRONTEND_PORT}"