Fix network interface display for VLANs and physical NICs

Agent changes:
- Filter out ifb* interfaces from network display
- Parse @parent notation for VLAN interfaces (e.g., lan@enp0s31f6)
- Show physical interfaces even without IP addresses
- Only filter virtual interfaces that have no IPs
- Extract parent interface relationships for proper nesting

Dashboard changes:
- Nest VLAN/child interfaces under their physical parent
- Show physical NICs with status icons even when down
- Display child interfaces grouped under parent interface
- Keep standalone virtual interfaces at root level

Updated to version 0.1.169

Cargo.lock

@@ -279,7 +279,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.168"
+version = "0.1.169"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.168"
+version = "0.1.169"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -324,7 +324,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.168"
+version = "0.1.169"
 dependencies = [
  "chrono",
  "serde",