Use qty dropdown for availability count, not just scarcity text

The 'We have X left' scarcity indicator only appears when availability is
low (typically ≤5). The quantity <select> dropdown in the booking form
always shows 0..N where N = actual available qty (capped at 10).

Extract max option value from the <select> in the last table cell per rate
plan row, falling back to regex parsing of the cell text if the select
isn't rendered, then to the scarcity text as a last resort.

Stored in both rooms_left and available_qty on RateData.

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

backend/services/scraper_backends/playwright_hotel_page.py

@@ -73,15 +73,39 @@ _EXTRACT_RATES_JS = """
                 const cancelMatch = condCell.match(/free cancellation before ([\\w\\s]+)/i);
                 const freeCancelText = cancelMatch ? cancelMatch[1].trim() : null;
 
-                // Persons: first <td> ("Max persons: 2" or "Only for 1 guest")
+                        // Persons: first <td> ("Max persons: 2" or "Only for 1 guest")
                 const personsCell = cells.length >= 1 ? cells[0].innerText || '' : '';
                 const personsMatch = personsCell.match(/\\d+/);
                 const maxPersons = personsMatch ? parseInt(personsMatch[0]) : null;
 
+                // Quantity dropdown: last <td> has a <select> with options 0..N
+                // where N = actual available qty (capped at 10 by Booking.com).
+                // This is more reliable than the "X left" scarcity text which only
+                // appears when availability is low (typically ≤5).
+                let qtyAvailable = availCount; // fallback to scarcity text
+                const qtyCell = cells.length >= 4 ? cells[cells.length - 1] : null;
+                if (qtyCell) {
+                    const sel = qtyCell.querySelector('select');
+                    if (sel) {
+                        const vals = Array.from(sel.options)
+                            .map(o => parseInt(o.value))
+                            .filter(v => !isNaN(v) && v > 0);
+                        if (vals.length > 0) qtyAvailable = Math.max(...vals);
+                    } else {
+                        // Fallback: parse max number from cell text
+                        // "Select rooms\\n0\\n1  (£208)\\n2  (£416)" → [1,2] → max 2
+                        const nums = (qtyCell.innerText || '').match(/^(\\d+)/gm);
+                        if (nums && nums.length > 0) {
+                            const parsed = nums.map(n => parseInt(n)).filter(v => v > 0);
+                            if (parsed.length > 0) qtyAvailable = Math.max(...parsed);
+                        }
+                    }
+                }
+
                 results.push({
                     room_id:            roomId,
                     room_name:          roomName,
-                    avail_count:        availCount,
+                    avail_count:        qtyAvailable,
                     block_id:           blockId,
                     price:              priceRaw ? parseInt(priceRaw) : null,
                     breakfast_included: breakfastIncluded,
@@ -282,7 +306,8 @@ class PlaywrightHotelPageBackend(ScraperBackend):
                     room_type=plan['room_name'] or None,
                     breakfast_included=plan['breakfast_included'],
                     free_cancellation=not plan['non_refundable'],
-                    rooms_left=plan['avail_count'],
+                    rooms_left=plan['avail_count'],   # qty from dropdown (max 10) or scarcity text
+                    available_qty=plan['avail_count'],
                     rate_plan_id=plan['block_id'] or None,
                     max_persons=plan['max_persons'],
                 ))