feat: add sensor move mode to floor plan

lib/features/floorplan/floor_plan_screen.dart

@@ -32,7 +32,26 @@ class _FloorPlanScreenState extends ConsumerState<FloorPlanScreen> {
         .then((rooms) => _editorKey.currentState?.loadFloorPlan(rooms));
     ref
         .read(sensorsProvider.future)
-        .then((sensors) => _editorKey.currentState?.loadSensors(sensors));
+        .then((sensors) {
+          _editorKey.currentState?.loadSensors(sensors);
+          _applyPlacementState();
+        });
+  }
+
+  void _applyPlacementState() {
+    final placing = ref.read(sensorPlacementProvider);
+    if (placing == null) {
+      _editorKey.currentState?.highlightSensor(null);
+      return;
+    }
+    final currentMode = ref.read(floorPlanModeProvider);
+    if (currentMode != FloorPlanMode.view) {
+      ref.read(floorPlanModeProvider.notifier).state = FloorPlanMode.view;
+      _editorKey.currentState?.setMode(FloorPlanMode.view);
+    }
+    if (placing.isPlaced) {
+      _editorKey.currentState?.highlightSensor(placing.id.toString());
+    }
   }
 
   Future<void> _confirmPlacement(Sensor sensor) async {
@@ -81,9 +100,7 @@ class _FloorPlanScreenState extends ConsumerState<FloorPlanScreen> {
     ref.listen(particleCloudProvider, (_, next) {
       next.whenData((p) => _editorKey.currentState?.updateParticleCloud(p));
     });
-    ref.listen(selectedSensorIdProvider, (_, id) {
-      _editorKey.currentState?.highlightSensor(id);
-    });
+    ref.listen(sensorPlacementProvider, (prev, next) => _applyPlacementState());
 
     final unplaced = sensorsAsync.valueOrNull
             ?.where((s) => !s.isPlaced)
@@ -103,23 +120,37 @@ class _FloorPlanScreenState extends ConsumerState<FloorPlanScreen> {
         appBar: AppBar(
           title: const Text('Floor Plan'),
           actions: [
-            if (placingSensor == null)
-              IconButton(
-                tooltip:
-                    mode == FloorPlanMode.edit ? 'View mode' : 'Edit mode',
-                icon: Icon(
-                  mode == FloorPlanMode.edit
-                      ? Icons.visibility
-                      : Icons.edit,
+            if (placingSensor == null) ...[
+              if (mode == FloorPlanMode.view) ...[
+                IconButton(
+                  tooltip: 'Edit mode',
+                  icon: const Icon(Icons.edit),
+                  onPressed: () {
+                    ref.read(floorPlanModeProvider.notifier).state =
+                        FloorPlanMode.edit;
+                    _editorKey.currentState?.setMode(FloorPlanMode.edit);
+                  },
                 ),
-                onPressed: () {
-                  final next = mode == FloorPlanMode.edit
-                      ? FloorPlanMode.view
-                      : FloorPlanMode.edit;
-                  ref.read(floorPlanModeProvider.notifier).state = next;
-                  _editorKey.currentState?.setMode(next);
-                },
-              ),
+                IconButton(
+                  tooltip: 'Sensor move mode',
+                  icon: const Icon(Icons.sensors),
+                  onPressed: () {
+                    ref.read(floorPlanModeProvider.notifier).state =
+                        FloorPlanMode.sensorMove;
+                    _editorKey.currentState?.setMode(FloorPlanMode.sensorMove);
+                  },
+                ),
+              ] else
+                IconButton(
+                  tooltip: 'Done',
+                  icon: const Icon(Icons.check),
+                  onPressed: () {
+                    ref.read(floorPlanModeProvider.notifier).state =
+                        FloorPlanMode.view;
+                    _editorKey.currentState?.setMode(FloorPlanMode.view);
+                  },
+                ),
+            ],
           ],
         ),
         body: Column(
@@ -131,8 +162,6 @@ class _FloorPlanScreenState extends ConsumerState<FloorPlanScreen> {
                     key: _editorKey,
                     mode: mode,
                     onSensorTapped: (id) {
-                      ref.read(selectedSensorIdProvider.notifier).state =
-                          id;
                       showSensorDetailSheet(context, int.parse(id));
                     },
                     onSensorMoved: (sensorId, roomId, x, y) async {
@@ -163,8 +192,6 @@ class _FloorPlanScreenState extends ConsumerState<FloorPlanScreen> {
                     },
                     onRoomAdded: (x, y) => _showAddRoomDialog(x, y),
                     onEditRoomTapped: _showRoomEditSheet,
-                    onEditSensorTapped: (id) =>
-                        showSensorDetailSheet(context, int.parse(id)),
                     onAddSensorTapped: () => showModalBottomSheet<void>(
                       context: context,
                       isScrollControlled: true,

lib/features/floorplan/widgets/floor_plan_editor.dart

@@ -20,7 +20,6 @@ class FloorPlanEditor extends StatefulWidget {
     this.onRoomsUpdated,
     this.onRoomAdded,
     this.onEditRoomTapped,
-    this.onEditSensorTapped,
     this.onAddSensorTapped,
   });
 
@@ -31,7 +30,6 @@ class FloorPlanEditor extends StatefulWidget {
   final void Function(List<Room> rooms)? onRoomsUpdated;
   final void Function(double x, double y)? onRoomAdded;
   final void Function(int roomId)? onEditRoomTapped;
-  final void Function(String sensorId)? onEditSensorTapped;
   final void Function()? onAddSensorTapped;
 
   @override
@@ -44,7 +42,7 @@ class FloorPlanEditorState extends State<FloorPlanEditor> {
   final _pending = <Future<void> Function()>[];
 
   int? _selectedRoomId;
-  String? _selectedSensorId;
+  String? _repositioningSensorId;
   Completer<({int? roomId, double? x, double? y})>? _placementCompleter;
 
   @override
@@ -78,19 +76,17 @@ class FloorPlanEditorState extends State<FloorPlanEditor> {
     switch (data['type'] as String?) {
       case 'sensorTapped':
         final id = data['id'] as String;
-        if (widget.mode == FloorPlanMode.edit) {
-          setState(() {
-            _selectedSensorId = id;
-            _selectedRoomId = null;
-          });
-        } else {
-          widget.onSensorTapped(id);
-          Vibration.hasVibrator()
-              .then((t) { if(t) Vibration.vibrate(duration: 20); });
-        }
+        widget.onSensorTapped(id);
+        Vibration.hasVibrator()
+            .then((t) { if (t) Vibration.vibrate(duration: 20); });
       case 'sensorMoved':
+        final id = data['id'] as String;
+        if (_repositioningSensorId == id) {
+          setState(() => _repositioningSensorId = null);
+          setRepositioningSensor(null);
+        }
         widget.onSensorMoved(
-          data['id'] as String,
+          id,
           (data['roomId'] as num).toInt(),
           (data['x'] as num).toDouble(),
           (data['y'] as num).toDouble(),
@@ -106,15 +102,9 @@ class FloorPlanEditorState extends State<FloorPlanEditor> {
           (data['y'] as num).toDouble(),
         );
       case 'roomTapped':
-        setState(() {
-          _selectedRoomId = (data['id'] as num).toInt();
-          _selectedSensorId = null;
-        });
+        setState(() => _selectedRoomId = (data['id'] as num).toInt());
       case 'selectionCleared':
-        setState(() {
-          _selectedRoomId = null;
-          _selectedSensorId = null;
-        });
+        setState(() => _selectedRoomId = null);
       case 'positionAtCenter':
         final roomId = (data['roomId'] as num?)?.toInt();
         final x = (data['x'] as num?)?.toDouble();
@@ -204,7 +194,7 @@ class FloorPlanEditorState extends State<FloorPlanEditor> {
   Future<void> setMode(FloorPlanMode mode) {
     setState(() {
       _selectedRoomId = null;
-      _selectedSensorId = null;
+      _repositioningSensorId = null;
     });
     return _run(() async {
       await _controller.runJavaScript(
@@ -213,6 +203,16 @@ class FloorPlanEditorState extends State<FloorPlanEditor> {
     });
   }
 
+  Future<void> setRepositioningSensor(String? id) {
+    setState(() => _repositioningSensorId = id);
+    return _run(() async {
+      final jsId = id == null ? 'null' : jsonEncode(id);
+      await _controller.runJavaScript(
+        'window.companion.setRepositioningSensor($jsId)',
+      );
+    });
+  }
+
   Future<void> addRoom() {
     return _run(() async {
       await _controller.runJavaScript('window.companion.addRoom()');
@@ -245,16 +245,6 @@ class FloorPlanEditorState extends State<FloorPlanEditor> {
             crossAxisAlignment: CrossAxisAlignment.end,
             children: [
               if (inEditMode) ...[
-                if (_selectedSensorId != null) ...[
-                  FloatingActionButton.small(
-                    heroTag: 'editor-info-sensor',
-                    tooltip: 'Sensor details',
-                    onPressed: () =>
-                        widget.onEditSensorTapped?.call(_selectedSensorId!),
-                    child: const Icon(Icons.info_outline),
-                  ),
-                  const SizedBox(height: 8),
-                ],
                 if (_selectedRoomId != null) ...[
                   FloatingActionButton.small(
                     heroTag: 'editor-edit-room',