Highlight seasonal Community Center priorities

static/availability.js

@@ -0,0 +1,41 @@
+(function exposeAvailability(root, factory) {
+  const api = factory();
+  if (typeof module === "object" && module.exports) module.exports = api;
+  if (root) root.ValleyAvailability = api;
+})(typeof window === "undefined" ? globalThis : window, () => {
+  const weatherFor = entry => {
+    if (!String(entry.id || "").startsWith("fish-")) return null;
+    const detail = String(entry.meta || "").toLowerCase();
+    if (detail.includes("rain")) return "Rain";
+    if (detail.includes("sunny")) return "Sun";
+    return null;
+  };
+
+  const classify = (entry, { checked, chooseGroupComplete, season }) => {
+    const seasons = Array.isArray(entry.seasons) ? entry.seasons : [];
+    const seasonal = seasons.length > 0;
+    const inSeason = seasons.includes(season);
+    const availableNow = !seasonal || inSeason;
+    const needed = !checked && !chooseGroupComplete;
+    return {
+      checked,
+      needed,
+      seasonal,
+      inSeason,
+      availableNow,
+      seasonExclusive: needed && inSeason && seasons.length === 1,
+      weather: weatherFor(entry),
+      seasons
+    };
+  };
+
+  const matchesFilter = (status, filter) => {
+    if (filter === "open") return status.needed;
+    if (filter === "now") return status.needed && status.availableNow;
+    if (filter === "exclusive") return status.seasonExclusive;
+    if (filter === "weather") return status.needed && status.availableNow && Boolean(status.weather);
+    return true;
+  };
+
+  return { classify, matchesFilter, weatherFor };
+});