fix: prevent browser caching of booked dates and ensure booked dates are immediately disabled

public/checkout.js

@@ -79,6 +79,14 @@
       })
       .then((data) => {
         if (data.success) {
+          try {
+            const localBooked = JSON.parse(localStorage.getItem("bookedDates") || "[]");
+            if (!localBooked.includes(selectedDate)) {
+              localBooked.push(selectedDate);
+              localStorage.setItem("bookedDates", JSON.stringify(localBooked));
+            }
+          } catch (e) {}
+
           summarySection.classList.add("hidden");
           if (backLink) {
             backLink.classList.add("hidden");

public/datetime.js

@@ -38,22 +38,31 @@
   }
 
   Promise.all([
-    fetch("appsettings.json").then((res) => res.json()),
-    fetch("/api/booked-dates")
+    fetch("appsettings.json?t=" + Date.now()).then((res) => res.json()),
+    fetch("/api/booked-dates?t=" + Date.now(), { cache: "no-store" })
       .then((res) => (res.ok ? res.json() : []))
       .catch(() => []),
   ])
     .then(([settings, bookedDates]) => {
-      bookedDatesSet = new Set(bookedDates || []);
+      let localBooked = [];
+      try {
+        localBooked = JSON.parse(localStorage.getItem("bookedDates") || "[]");
+      } catch (e) {}
+
+      const allBooked = [...(bookedDates || []), ...localBooked]
+        .map((d) => (typeof d === "string" ? d.trim() : ""))
+        .filter(Boolean);
+
+      bookedDatesSet = new Set(allBooked);
 
       const datesList = settings.availableDates || [];
       datesList.forEach((item) => {
         let key = "";
         let type = "long";
         if (typeof item === "string") {
-          key = item;
+          key = item.trim();
         } else if (item && item.date) {
-          key = item.date;
+          key = item.date.trim();
           type = item.type || "long";
         }