time picker closing fix

frontend/src/routes/book/+page.svelte

@@ -351,7 +351,6 @@
 			: []
 	);
 
-	// NEW: Generate grouped time slots (available as individual buttons, unavailable as grouped blocks)
 	function generateGroupedTimeSlots(
 		duration: number,
 		date: CalendarDate | undefined
@@ -429,28 +428,50 @@
 					startTime: timeStr,
 					endTime: slotEndTime
 				});
+
+				// If this available slot ends at or after closing time, break out early
+				// to avoid generating unnecessary slots
+				if (timeToMinutes(slotEndTime) >= endTotalMinutes) {
+					break;
+				}
 			} else {
 				// Start or continue unavailable group
 				if (currentUnavailableStart === null) {
 					currentUnavailableStart = timeStr;
 				}
-				// Continue the group - we'll close it when we hit an available slot or end
 			}
 		}
 
 		// Close any remaining unavailable group at the end of the day
+		// BUT only if there are no available slots that already reach closing time
 		if (currentUnavailableStart !== null) {
-			groupedSlots.push({
-				type: 'unavailable',
-				startTime: currentUnavailableStart,
-				endTime: dayWorkingHours.endTime,
-				isGrouped: true
-			});
+			const lastAvailableSlot = groupedSlots.filter((s) => s.type === 'available').pop();
+			const lastAvailableEnd = lastAvailableSlot ? timeToMinutes(lastAvailableSlot.endTime) : 0;
+
+			// Only add the final unavailable group if:
+			// 1. It actually contains some time before closing
+			// 2. No available slot already reaches closing time
+			const unavailableStartMinutes = timeToMinutes(currentUnavailableStart);
+
+			if (unavailableStartMinutes < endTotalMinutes && lastAvailableEnd < endTotalMinutes) {
+				groupedSlots.push({
+					type: 'unavailable',
+					startTime: currentUnavailableStart,
+					endTime: dayWorkingHours.endTime,
+					isGrouped: true
+				});
+			}
 		}
 
 		return groupedSlots;
 	}
 
+	// Helper: Convert time string to total minutes
+	function timeToMinutes(time: string): number {
+		const [hours, minutes] = time.split(':').map(Number);
+		return hours * 60 + minutes;
+	}
+
 	// Helper: Calculate the previous 15-minute time slot
 	function calculatePreviousTime(time: string): string {
 		const [hours, minutes] = time.split(':').map(Number);
@@ -462,7 +483,6 @@
 		return `${String(prevHours).padStart(2, '0')}:${String(prevMinutes).padStart(2, '0')}`;
 	}
 
-	// NEW: Generate available time slots within available segments
 	function generateAvailableTimeSlots(duration: number, date: CalendarDate | undefined): string[] {
 		if (!date || !workingHours || !availableHours) {
 			return [];