diff --git a/backend/src/routes/rooms.js b/backend/src/routes/rooms.js
index f10b541..1477329 100644
--- a/backend/src/routes/rooms.js
+++ b/backend/src/routes/rooms.js
@@ -47,6 +47,83 @@ function filterBookingData(booking, canSeeGuest, canSeeRate, canSeeAllNotes, vis
 export async function roomRoutes(app) {
   app.addHook('preHandler', requireAuth)
 
+  // GET /api/rooms/debug-room?room=101&date=YYYY-MM-DD
+  // Returns raw NewBook data for a single room — use to diagnose bracket/booking issues.
+  app.get('/api/rooms/debug-room', async (req, reply) => {
+    if (!hasCap(req, 'settings')) return reply.status(403).send({ error: 'Forbidden' })
+
+    const viewDate = req.query.date || new Date().toISOString().slice(0, 10)
+    const roomName = req.query.room
+    const yesterday       = dateOffset(viewDate, -1)
+    const tomorrow        = dateOffset(viewDate, +1)
+    const dayAfterTomorrow = dateOffset(viewDate, +2)
+
+    const [sites, bookings] = await Promise.all([
+      fetchSites(),
+      fetchBookings(yesterday, dayAfterTomorrow),
+    ])
+
+    if (!roomName) {
+      const sample = bookings[0] || {}
+      return {
+        hint: 'Pass ?room=<site_name> to inspect a specific room',
+        view_date: viewDate,
+        total_sites: sites.length,
+        total_bookings: bookings.length,
+        booking_field_names: Object.keys(sample),
+        site_field_names: sites.length ? Object.keys(sites[0]) : [],
+        site_list: sites.map(s => ({ id: s.site_id, name: s.site_name })),
+      }
+    }
+
+    const site = sites.find(s => s.site_name === roomName)
+    if (!site) return { error: `Room "${roomName}" not found`, available: sites.map(s => s.site_name) }
+
+    const siteId = String(site.site_id)
+    const idFields = bookings.length
+      ? Object.keys(bookings[0]).filter(k =>
+          k.toLowerCase().includes('site') || k.toLowerCase().includes('room') ||
+          k.toLowerCase().includes('unit') || k.toLowerCase().includes('location')
+        )
+      : []
+
+    const matchFn = b =>
+      idFields.some(f => String(b[f] || '') === siteId) ||
+      String(b.site_id || '') === siteId ||
+      String(b.booking_site_id || '') === siteId ||
+      (b.site_name && b.site_name === roomName)
+
+    const siteBookings = bookings.filter(matchFn)
+
+    const classified = classifyRoom(site, bookings, viewDate, yesterday, tomorrow)
+
+    return {
+      view_date: viewDate, yesterday, tomorrow, day_after_tomorrow: dayAfterTomorrow,
+      site: { id: siteId, name: site.site_name, fields: Object.keys(site) },
+      booking_id_fields: idFields,
+      total_bookings_fetched: bookings.length,
+      matching_bookings: siteBookings.map(b => {
+        const out = {}
+        for (const f of ['booking_id', 'booking_status', 'booking_arrival', 'booking_departure', ...idFields]) {
+          out[f] = b[f]
+        }
+        return out
+      }),
+      classified: {
+        flow_type:       classified.flow_type,
+        spans_previous:  classified.spans_previous,
+        spans_next:      classified.spans_next,
+        previous_status: classified.previous_status,
+        next_status:     classified.next_status,
+        booking_id:      classified.booking?.booking_id,
+        booking_arrival: classified.booking?.booking_arrival,
+        booking_departure: classified.booking?.booking_departure,
+        next_booking_id: classified.next_booking?.booking_id,
+        next_booking_arrival: classified.next_booking?.booking_arrival,
+      },
+    }
+  })
+
   // GET /api/rooms?date=YYYY-MM-DD
   app.get('/api/rooms', async (req, reply) => {
     if (!hasCap(req, 'view')) return reply.status(403).send({ error: 'Missing capability: view' })
diff --git a/frontend/src/components/RoomCard.tsx b/frontend/src/components/RoomCard.tsx
index f5a6008..74acb71 100644
--- a/frontend/src/components/RoomCard.tsx
+++ b/frontend/src/components/RoomCard.tsx
@@ -104,8 +104,8 @@ function RoomCard({ room, viewDate, config, onClick }: Props) {
   }
   if (room.spans_next) {
     dataAttrs['data-spans-next'] = 'true'
-  } else if (room.next_status) {
-    dataAttrs['data-next-status'] = room.next_status.toLowerCase()
+  } else if (room.next_status != null) {
+    dataAttrs['data-next-status'] = room.next_status || 'unknown'
   }
 
   // Task status pill