feat: blue dot + Weather Delay notice for storm-closed parks

- Dot turns blue (instead of green) during weather delay on homepage
- Mobile card "Open today" badge becomes blue "⛈ Weather Delay"
- Park page LiveRidePanel shows a blue "⛈ Weather Delay — all rides currently closed" badge instead of "Not open yet — check back soon"
- Added --color-weather-* CSS variables (blue palette)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

components/ParkCard.tsx

@@ -63,17 +63,17 @@ export function ParkCard({ park, weekDates, parkData, today, openRideCount, coas
           <div style={{ display: "flex", flexDirection: "column", alignItems: "flex-end", gap: 5, flexShrink: 0 }}>
           {isOpenToday ? (
             <div style={{
-              background: isClosing ? "var(--color-closing-bg)" : "var(--color-open-bg)",
-              border: `1px solid ${isClosing ? "var(--color-closing-border)" : "var(--color-open-border)"}`,
+              background: isWeatherDelay ? "var(--color-weather-bg)" : isClosing ? "var(--color-closing-bg)" : "var(--color-open-bg)",
+              border: `1px solid ${isWeatherDelay ? "var(--color-weather-border)" : isClosing ? "var(--color-closing-border)" : "var(--color-open-border)"}`,
               borderRadius: 20,
               padding: "4px 10px",
               fontSize: "0.65rem",
               fontWeight: 700,
-              color: isClosing ? "var(--color-closing-text)" : "var(--color-open-text)",
+              color: isWeatherDelay ? "var(--color-weather-text)" : isClosing ? "var(--color-closing-text)" : "var(--color-open-text)",
               whiteSpace: "nowrap",
               letterSpacing: "0.03em",
             }}>
-              {isClosing ? "Closing" : "Open today"}
+              {isWeatherDelay ? "⛈ Weather Delay" : isClosing ? "Closing" : "Open today"}
             </div>
           ) : (
             <div style={{
@@ -89,17 +89,7 @@ export function ParkCard({ park, weekDates, parkData, today, openRideCount, coas
               Closed today
             </div>
           )}
-          {isOpenToday && isWeatherDelay && (
-            <div style={{
-              fontSize: "0.65rem",
-              color: "var(--color-text-muted)",
-              fontWeight: 500,
-              textAlign: "right",
-            }}>
-              ⛈ Weather Delay
-            </div>
-          )}
-          {isOpenToday && openRideCount !== undefined && (
+          {isOpenToday && !isWeatherDelay && openRideCount !== undefined && (
             <div style={{
               fontSize: "0.65rem",
               color: isClosing ? "var(--color-closing-hours)" : "var(--color-open-hours)",