feat: display Sensors from repo on sensor list

lib/features/sensors/sensor_list_screen.dart

@@ -10,9 +10,7 @@ class SensorListScreen extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    // TODO: replace Placeholder with AsyncValue-driven list.
+    final sensors = ref.watch(sensorsProvider);
-    // final sensors = ref.watch(sensorsProvider); // define a FutureProvider
-
     final selectedId = ref.watch(selectedSensorIdProvider);
 
     return Scaffold(
@@ -34,9 +32,36 @@ class SensorListScreen extends ConsumerWidget {
                 ),
               ],
             ),
-          // TODO: ListView.builder with sensor tiles.
+          Expanded(
-          //       Highlight tile whose id == selectedId.
+            child: sensors.when(
-          const Expanded(child: Placeholder()),
+              loading: () =>
+                  const Center(child: CircularProgressIndicator()),
+              error: (e, _) => Center(child: Text(e.toString())),
+              data: (list) => list.isEmpty
+                  ? const Center(child: Text('No sensors enrolled yet'))
+                  : ListView.builder(
+                      itemCount: list.length,
+                      itemBuilder: (context, i) {
+                        final sensor = list[i];
+                        final isSelected =
+                            selectedId == sensor.id.toString();
+                        return ListTile(
+                          selected: isSelected,
+                          leading: Icon(sensor.isPlaced
+                              ? Icons.sensors
+                              : Icons.sensors_off_outlined),
+                          title: Text(sensor.displayName),
+                          subtitle: Text(sensor.isPlaced
+                              ? 'Placed'
+                              : 'Not placed on floor plan'),
+                          trailing: const Icon(Icons.chevron_right),
+                          onTap: () =>
+                              context.push('/sensors/${sensor.id}'),
+                        );
+                      },
+                    ),
+            ),
+          ),
         ],
       ),
       floatingActionButton: FloatingActionButton(
@@ -44,7 +69,7 @@ class SensorListScreen extends ConsumerWidget {
           context: context,
           isScrollControlled: true,
           builder: (_) => const BleProvisionSheet(),
-        ),
+        ).then((_) => ref.invalidate(sensorsProvider)),
         child: const Icon(Icons.add),
       ),
     );