Add dev stacks

stacks/network-mcp/static/host_metadata.json

@@ -0,0 +1,9 @@
+{
+  "mac:aa:bb:cc:dd:ee:ff": {
+    "role": "router",
+    "owner": "admin",
+    "location": "server-room",
+    "tags": ["critical", "gateway"],
+    "notes": "Main gateway"
+  }
+}