Carry the level everywhere a position is drawn, and gate it per occurrence

frontend/src/components/DashboardCards.vue

@@ -22,7 +22,7 @@
           <!-- With coordinates, the name carries the same floor-plan preview
                the asset's own page uses. Without them, a plain link. -->
           <LocationMapTooltip v-if="row.link && row.maphover"
-                              :left="row.maphover.x" :top="row.maphover.y"
+                              :left="row.maphover.x" :top="row.maphover.y" :levelid="row.maphover.levelid"
                               :machineName="row.maphover.label">
             <router-link :to="row.link" class="dc-row-title"
                          :title="row.titletip || undefined">

frontend/src/components/dashboardCards.js

@@ -127,7 +127,15 @@ export function mapHover(card, item) {
   const x = item[spec.x]
   const y = item[spec.y]
   if (x === null || x === undefined || y === null || y === undefined) return null
-  return { x, y, label: spec.label ? (item[spec.label] || '') : '' }
+  // The level travels with the coordinates (ADR-017) - they are pixels of ONE
+  // drawing. Read `levelid` unless the card names another field, so a card that
+  // predates levels still previews on the right floor instead of none.
+  const levelid = item[spec.level || 'levelid']
+  return {
+    x, y,
+    levelid: levelid === undefined ? null : levelid,
+    label: spec.label ? (item[spec.label] || '') : '',
+  }
 }
 
 export function cardRows(card) {