Package portal and close UI API gaps

cezen-portal/system-status.json

@@ -0,0 +1,13 @@
+{
+  "updated": "2025-06-01T09:00:00Z",
+  "cpu_pct": 12,
+  "gpu_pct": 45,
+  "gpu_temp": 62,
+  "ram_pct": 38,
+  "ram_used": "48 GB",
+  "ram_total": "128 GB",
+  "disk_pct": 22,
+  "disk_used": "880 GB",
+  "disk_total": "4.0 TB",
+  "uptime": "14 days, 3 hours"
+}