Add network interface collection and display

Extend NixOS collector to gather network interfaces using ip command JSON output. Display all interfaces with IPv4 and IPv6 addresses in Network section above CPU metrics. Filters out loopback and link-local addresses.

Version bump to 0.1.161

dashboard/src/ui/widgets/system.rs

@@ -8,13 +8,16 @@ use ratatui::{
 
 use crate::ui::theme::{StatusIcons, Typography};
 
-/// System widget displaying NixOS info, CPU, RAM, and Storage in unified layout
+/// System widget displaying NixOS info, Network, CPU, RAM, and Storage in unified layout
 #[derive(Clone)]
 pub struct SystemWidget {
     // NixOS information
     nixos_build: Option<String>,
     agent_hash: Option<String>,
-    
+
+    // Network interfaces
+    network_interfaces: Vec<cm_dashboard_shared::NetworkInterfaceData>,
+
     // CPU metrics
     cpu_load_1min: Option<f32>,
     cpu_load_5min: Option<f32>,
@@ -89,6 +92,7 @@ impl SystemWidget {
         Self {
             nixos_build: None,
             agent_hash: None,
+            network_interfaces: Vec::new(),
             cpu_load_1min: None,
             cpu_load_5min: None,
             cpu_load_15min: None,
@@ -164,6 +168,9 @@ impl Widget for SystemWidget {
         // Extract build version
         self.nixos_build = agent_data.build_version.clone();
 
+        // Extract network interfaces
+        self.network_interfaces = agent_data.system.network.interfaces.clone();
+
         // Extract CPU data directly
         let cpu = &agent_data.system.cpu;
         self.cpu_load_1min = Some(cpu.load_1min);
@@ -573,8 +580,46 @@ impl SystemWidget {
         lines
     }
 
-    /// Render system widget  
-    pub fn render(&mut self, frame: &mut Frame, area: Rect, hostname: &str, config: Option<&crate::config::DashboardConfig>) {
+    /// Render network section for display
+    fn render_network(&self) -> Vec<Line<'_>> {
+        let mut lines = Vec::new();
+
+        if self.network_interfaces.is_empty() {
+            return lines;
+        }
+
+        for (i, interface) in self.network_interfaces.iter().enumerate() {
+            let is_last = i == self.network_interfaces.len() - 1;
+            let tree_symbol = if is_last { "  └─ " } else { "  ├─ " };
+
+            // Show interface name
+            let mut interface_text = format!("{}: ", interface.name);
+
+            // Add IPv4 addresses
+            if !interface.ipv4_addresses.is_empty() {
+                interface_text.push_str(&interface.ipv4_addresses.join(", "));
+            }
+
+            // Add IPv6 addresses
+            if !interface.ipv6_addresses.is_empty() {
+                if !interface.ipv4_addresses.is_empty() {
+                    interface_text.push_str(", ");
+                }
+                interface_text.push_str(&interface.ipv6_addresses.join(", "));
+            }
+
+            let mut spans = vec![
+                Span::styled(tree_symbol, Typography::tree()),
+            ];
+            spans.extend(StatusIcons::create_status_spans(Status::Ok, &interface_text));
+            lines.push(Line::from(spans));
+        }
+
+        lines
+    }
+
+    /// Render system widget
+    pub fn render(&mut self, frame: &mut Frame, area: Rect, hostname: &str, _config: Option<&crate::config::DashboardConfig>) {
         let mut lines = Vec::new();
 
         // NixOS section
@@ -591,17 +636,16 @@ impl SystemWidget {
         lines.push(Line::from(vec![
             Span::styled(format!("Agent: {}", agent_version_text), Typography::secondary())
         ]));
-        
-        // Display detected connection IP
-        if let Some(config) = config {
-            if let Some(host_details) = config.hosts.get(hostname) {
-                let detected_ip = host_details.get_connection_ip(hostname);
-                lines.push(Line::from(vec![
-                    Span::styled(format!("IP: {}", detected_ip), Typography::secondary())
-                ]));
-            }
+
+        // Network section
+        if !self.network_interfaces.is_empty() {
+            lines.push(Line::from(vec![
+                Span::styled("Network:", Typography::widget_title())
+            ]));
+
+            let network_lines = self.render_network();
+            lines.extend(network_lines);
         }
-        
 
         // CPU section
         lines.push(Line::from(vec![