dev(container): make load-devices script portable (mktemp fallback)

.vscode/tasks.json

@@ -21,7 +21,6 @@
         "showReuseMessage": false,
         "group": "POSIX Tasks"
       },
-      
       "problemMatcher": [],
       "group": {
         "kind": "build",
@@ -59,6 +58,31 @@
         "color": "terminal.ansiRed"
       }
     },
+    {
+      "label": "[Dev Container] Load Sample Devices",
+      "type": "shell",
+      "command": "./isDevContainer.sh || exit 1; ./load-devices.sh",
+      "detail": "Generates a synthetic device inventory and imports it into the devcontainer database via /devices/import.",
+      "options": {
+        "cwd": "/workspaces/NetAlertX/.devcontainer/scripts",
+        "env": {
+          "CSV_PATH": "/tmp/netalertx-devices.csv"
+        }
+      },
+      "presentation": {
+        "echo": true,
+        "reveal": "always",
+        "panel": "shared",
+        "showReuseMessage": false,
+        "clear": false,
+        "group": "Devcontainer"
+      },
+      "problemMatcher": [],
+      "icon": {
+        "id": "cloud-upload",
+        "color": "terminal.ansiYellow"
+      }
+    },
     {
       "label": "[Dev Container] Re-Run Startup Script",
       "type": "shell",
@@ -73,7 +97,6 @@
         "panel": "shared",
         "showReuseMessage": false
       },
-
       "problemMatcher": [],
       "icon": {
         "id": "beaker",