Fix system panel layout and switch to version-based agent reporting

- Remove auto-close behavior from terminal popup for manual review
- Fix system panel to show correct NixOS section layout
- Add missing Active users line after Agent version
- Switch agent version from nix store hash to actual version number (v0.1.11)
- Display full version string without truncation for clear version tracking

dashboard/src/ui/widgets/system.rs

@@ -427,25 +427,15 @@ impl SystemWidget {
             Span::styled(format!("Build: {}", build_text), Typography::secondary())
         ]));
         
-        let config_text = self.config_hash.as_deref().unwrap_or("unknown");
+        let agent_version_text = self.agent_hash.as_deref().unwrap_or("unknown");
         lines.push(Line::from(vec![
-            Span::styled(format!("Config: {}", config_text), Typography::secondary())
+            Span::styled(format!("Agent: {}", agent_version_text), Typography::secondary())
         ]));
         
         let users_text = self.active_users.as_deref().unwrap_or("unknown");
         lines.push(Line::from(vec![
             Span::styled(format!("Active users: {}", users_text), Typography::secondary())
         ]));
-        
-        let agent_hash_text = self.agent_hash.as_deref().unwrap_or("unknown");
-        let short_hash = if agent_hash_text.len() > 8 && agent_hash_text != "unknown" {
-            &agent_hash_text[..8]
-        } else {
-            agent_hash_text
-        };
-        lines.push(Line::from(vec![
-            Span::styled(format!("Agent: {}", short_hash), Typography::secondary())
-        ]));
 
         // CPU section
         lines.push(Line::from(vec![