feat: add sensor move mode to floor plan

assets/konva/app.js

@@ -364,7 +364,7 @@ function renderSensors() {
     const group = new Konva.Group({
       id: `sensor-${sensor.id}`,
       x: absX, y: absY,
-      draggable: mode === 'edit',
+      draggable: mode === 'sensorMove',
     });
 
     group.add(new Konva.Circle({
@@ -395,8 +395,15 @@ function renderSensors() {
       listening: false,
     }));
 
+    group.on('click tap', () => {
+      if (mode === 'view') {
+        notifyFlutter({ type: 'sensorTapped', id: String(sensor.id) });
+      }
+    });
+
     let pressTimer = null;
     group.on('mousedown touchstart', () => {
+      if (mode === 'view') return;
       pressTimer = setTimeout(() => {
         notifyFlutter({ type: 'sensorTapped', id: String(sensor.id) });
         pressTimer = null;
@@ -544,15 +551,21 @@ window.companion = {
 
   setMode(newMode) {
     mode = newMode;
-    const edit = newMode === 'edit';
-    roomsLayer.find('Group').forEach(g => g.draggable(edit));
-    sensorsLayer.find('Group').forEach(g => g.draggable(edit));
-    tagsLayer.visible(!edit);
-    particlesLayer.visible(!edit);
+    roomsLayer.find('Group').forEach(g => g.draggable(newMode === 'edit'));
+    sensorsLayer.find('Group').forEach(g => g.draggable(newMode === 'sensorMove'));
+    tagsLayer.visible(newMode === 'view');
+    particlesLayer.visible(newMode === 'view');
     _clearDimensions();
     stage.batchDraw();
   },
 
+  setRepositioningSensor(id) {
+    sensorsLayer.find('Group').forEach(g => {
+      g.draggable(mode === 'sensorMove' && (id == null || g.id() === `sensor-${id}`));
+    });
+    stage.batchDraw();
+  },
+
   highlightSensor(id) {
     sensorsLayer.find('.highlight-ring').forEach(r => r.visible(false));
     if (id) {