fix: keep outage labels in-frame + show Fast Lane line based on data

Two refinements after the previous label change:

1. Outage labels rendered at position="top" were clipping against the
   chart's 8px top margin. Bumped to 24px so #N · Hh Mm sits above the
   band fully visible.

2. Fast Lane line was only rendered when the ride's metadata flag
   has_fast_lane was true. Some rides report Fast Lane waits without
   getting flagged, so we now also render the line whenever today's
   samples carry any non-null fastLaneMinutes — catches rides that are
   walk-on all day with a flat line at 0.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

components/charts/WaitTimeTodayChart.tsx

@@ -36,6 +36,12 @@ export default function WaitTimeTodayChart({ samples, hasFastLane }: Props) {
   const outages = computeOutages(samples);
   const outageByTime = outageLookup(samples, outages);
 
+  // Show the Fast Lane line if either the ride metadata flags it as a Fast
+  // Lane ride OR we have any actual Fast Lane data in today's samples. The
+  // metadata flag can lag (or read false even when SF is reporting waits),
+  // so the data-driven check rescues those rides.
+  const showFastLane = hasFastLane || samples.some((s) => s.fastLaneMinutes !== null);
+
   // X-axis time is rendered in the viewer's local timezone (Intl with no
   // tz arg) so an Eastern-time user sees ET regardless of which park.
   // Each point also carries its outage (if any) so the custom tooltip can
@@ -57,7 +63,8 @@ export default function WaitTimeTodayChart({ samples, hasFastLane }: Props) {
   return (
     <div style={{ width: "100%", height: 280 }}>
       <ResponsiveContainer>
-        <LineChart data={data} margin={{ top: 8, right: 16, left: 0, bottom: 4 }}>
+        {/* top margin leaves room for outage labels rendered with position="top" */}
+        <LineChart data={data} margin={{ top: 24, right: 16, left: 0, bottom: 4 }}>
           <CartesianGrid stroke="#272727" strokeDasharray="3 3" vertical={false} />
           <XAxis
             dataKey="time"
@@ -97,7 +104,7 @@ export default function WaitTimeTodayChart({ samples, hasFastLane }: Props) {
               }}
             />
           ))}
-          <Tooltip content={<RideTooltip hasFastLane={hasFastLane} />} />
+          <Tooltip content={<RideTooltip hasFastLane={showFastLane} />} />
           <Legend wrapperStyle={{ fontSize: "0.72rem", paddingTop: 4 }} />
           <Line
             name="Wait"
@@ -109,7 +116,7 @@ export default function WaitTimeTodayChart({ samples, hasFastLane }: Props) {
             connectNulls={false}
             isAnimationActive={false}
           />
-          {hasFastLane && (
+          {showFastLane && (
             <Line
               name="Fast Lane"
               type="monotone"