feat(map): focus selected marker at max zoom and tighten collapsed device panel

frontend/src/routes/_layout/index.tsx

@@ -67,6 +67,10 @@ type TelemetrySnapshot = {
 
 type ConnectionState = "connecting" | "live" | "retrying"
 type BaseMapType = "osm" | "amap" | "amap-satellite"
+type MapControlBridge = {
+  __mapFitAll?: () => void
+  __mapFocusDevice?: (coordinate: [number, number]) => void
+}
 
 /* ---------- constants ---------- */
 
@@ -338,17 +342,38 @@ function FitBoundsControl({
   coordinates: Array<[number, number]>
 }) {
   const map = useMap()
-  const fitAll = () => {
+  const fitAll = useCallback(() => {
     if (!coordinates.length) return
     if (coordinates.length === 1) {
       map.setView(coordinates[0], 14, { animate: true })
     } else {
       map.fitBounds(coordinates, { padding: [40, 40] })
     }
-  }
-  // expose via a ref so the outside button can call it
-  const ref = window as unknown as Record<string, () => void>
-  ref.__mapFitAll = fitAll
+  }, [coordinates, map])
+
+  const focusDevice = useCallback(
+    (coordinate: [number, number]) => {
+      const maxZoom = map.getMaxZoom()
+      const targetZoom = Number.isFinite(maxZoom) ? maxZoom : 18
+      map.setView(coordinate, targetZoom, { animate: true })
+    },
+    [map],
+  )
+
+  useEffect(() => {
+    const ref = window as unknown as MapControlBridge
+    ref.__mapFitAll = fitAll
+    ref.__mapFocusDevice = focusDevice
+    return () => {
+      if (ref.__mapFitAll === fitAll) {
+        delete ref.__mapFitAll
+      }
+      if (ref.__mapFocusDevice === focusDevice) {
+        delete ref.__mapFocusDevice
+      }
+    }
+  }, [fitAll, focusDevice])
+
   return null
 }
 
@@ -490,9 +515,14 @@ function Dashboard() {
     [devicesWithCoords, isGcj02],
   )
 
-  const handleDeviceClick = useCallback((deviceId: string) => {
-    setActiveDeviceId(deviceId)
-  }, [])
+  const handleDeviceClick = useCallback(
+    (deviceId: string, coordinate: [number, number]) => {
+      setActiveDeviceId(deviceId)
+      const mapBridge = window as unknown as MapControlBridge
+      mapBridge.__mapFocusDevice?.(coordinate)
+    },
+    [],
+  )
 
   const isLive = status === "live"
 
@@ -574,11 +604,12 @@ function Dashboard() {
             {devicesWithCoords.map((device) => {
               const isOffline = checkIsOffline(device.last_event_time)
               const isSelected = activeDeviceId === device.device_id
-              const [projLat, projLon] = projectCoord(
+              const projectedCoordinate = projectCoord(
                 device.lat as number,
                 device.lon as number,
                 isGcj02,
               )
+              const [projLat, projLon] = projectedCoordinate
               const color = deviceMarkerColor(device.fix_status, isOffline)
               const icon = buildDeviceIcon(color, isSelected, isOffline)
 
@@ -587,7 +618,8 @@ function Dashboard() {
                   position={[projLat, projLon]}
                   icon={icon}
                   eventHandlers={{
-                    click: () => handleDeviceClick(device.device_id),
+                    click: () =>
+                      handleDeviceClick(device.device_id, projectedCoordinate),
                   }}
                   key={device.device_id}
                 >
@@ -639,12 +671,14 @@ function Dashboard() {
         <div
           className={`absolute bottom-6 right-6 z-9999 w-80 max-w-[calc(100%-3rem)] transition-all duration-300 ${isPanelExpanded ? "opacity-80" : "opacity-100"}`}
         >
-          <Card className="shadow-lg border bg-background/50 backdrop-blur-md overflow-hidden">
+          <Card className="shadow-lg border bg-background/50 backdrop-blur-md overflow-hidden py-0 gap-0">
             <CardHeader
-              className="p-3 flex flex-row items-center justify-between space-y-0 cursor-pointer select-none"
+              className={`flex flex-row items-center justify-between space-y-0 cursor-pointer select-none transition-all duration-300 ${
+                isPanelExpanded ? "p-3 min-h-11" : "px-3 py-0 min-h-0"
+              }`}
               onClick={() => setIsPanelExpanded(!isPanelExpanded)}
             >
-              <CardTitle className="text-sm font-semibold flex items-center gap-2">
+              <CardTitle className="font-semibold flex items-center gap-2 text-sm">
                 Selected Device
                 {activeDevice?.signal_health &&
                   !isPanelExpanded &&