polish: clamp park column width, prevent park name line wrap

Column uses clamp(220px, 22%, 280px) — scales on small screens, caps at
280px on large ones. Park name gets whiteSpace:nowrap so it stays one line.

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

components/WeekCalendar.tsx

@@ -229,7 +229,7 @@ function ParkRow({
         }}>
           <div style={{ minWidth: 0, flex: 1 }}>
             <div style={{ display: "flex", alignItems: "center", gap: 6 }}>
-              <span style={{ fontWeight: 500, fontSize: "0.85rem", lineHeight: 1.2, color: "var(--color-text)" }}>
+              <span style={{ fontWeight: 500, fontSize: "0.85rem", lineHeight: 1.2, color: "var(--color-text)", whiteSpace: "nowrap" }}>
                 {park.name}
               </span>
               {rideCounts?.[park.id] !== undefined && (
@@ -294,7 +294,7 @@ export function WeekCalendar({ parks, weekDates, data, grouped, rideCounts, coas
         tableLayout: "fixed",
       }}>
         <colgroup>
-          <col style={{ width: "25%" }} />
+          <col style={{ width: "clamp(220px, 22%, 280px)" }} />
           {weekDates.map((d) => (
             <col key={d} style={{ width: 130 }} />
           ))}