Optimize dashboard overview loading

scripts/smoke_dashboard_load.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+API_PORT="${API_PORT:-8012}"
+DASHBOARD_PORT="${DASHBOARD_PORT:-3012}"
+API_BASE="http://127.0.0.1:${API_PORT}"
+DASHBOARD_URL="http://127.0.0.1:${DASHBOARD_PORT}/?api_base=${API_BASE}"
+
+API_LOG="${API_LOG:-/tmp/statehub-api-${API_PORT}.log}"
+DASHBOARD_LOG="${DASHBOARD_LOG:-/tmp/statehub-dashboard-${DASHBOARD_PORT}.log}"
+OVERVIEW_JSON="${OVERVIEW_JSON:-/tmp/statehub-overview-${API_PORT}.json}"
+OVERVIEW_HEADERS="${OVERVIEW_HEADERS:-/tmp/statehub-overview-${API_PORT}.headers}"
+DASHBOARD_HTML="${DASHBOARD_HTML:-/tmp/statehub-dashboard-${DASHBOARD_PORT}.html}"
+
+rm -f "$API_LOG" "$DASHBOARD_LOG" "$OVERVIEW_JSON" "$OVERVIEW_HEADERS" "$DASHBOARD_HTML"
+
+.venv/bin/python -m uvicorn api.main:app --host 127.0.0.1 --port "$API_PORT" \
+  > "$API_LOG" 2>&1 &
+api_pid=$!
+
+(cd dashboard && npm run dev -- --host 127.0.0.1 --port "$DASHBOARD_PORT" \
+  > "$DASHBOARD_LOG" 2>&1) &
+dashboard_pid=$!
+
+cleanup() {
+  kill "$api_pid" "$dashboard_pid" 2>/dev/null || true
+}
+trap cleanup EXIT
+
+wait_for_url() {
+  local label="$1"
+  local url="$2"
+  local output="$3"
+  local attempts="${4:-40}"
+  local i
+  for i in $(seq 1 "$attempts"); do
+    if curl -fsS "$url" -o "$output" >/dev/null 2>&1; then
+      return 0
+    fi
+    sleep 1
+  done
+  echo "$label did not become ready: $url" >&2
+  return 1
+}
+
+if ! wait_for_url "API overview" "${API_BASE}/state/overview" "$OVERVIEW_JSON"; then
+  echo "API log:" >&2
+  tail -80 "$API_LOG" >&2 || true
+  exit 1
+fi
+
+if ! wait_for_url "Dashboard" "$DASHBOARD_URL" "$DASHBOARD_HTML"; then
+  echo "Dashboard log:" >&2
+  tail -80 "$DASHBOARD_LOG" >&2 || true
+  exit 1
+fi
+
+curl -sS -D "$OVERVIEW_HEADERS" -o "$OVERVIEW_JSON" \
+  -w "overview %{http_code} %{time_total} %{size_download}\n" \
+  "${API_BASE}/state/overview"
+printf "dashboard 200 %s\n" "$DASHBOARD_URL"
+wc -c "$OVERVIEW_JSON"
+grep -i "x-statehub" "$OVERVIEW_HEADERS" || true