Fix SSH connection count and re-enable nginx site accessibility check

- Use full path /run/current-system/sw/bin/ss for SSH connection counting
- Re-enable nginx site accessibility checking with full curl path
- This should show SSH connection counts and verify which nginx sites are accessible

agent/src/collectors/service.rs

@@ -446,7 +446,7 @@ impl ServiceCollector {
 
     async fn get_ssh_active_users(&self) -> Option<String> {
         // Use ss to find established SSH connections on port 22
-        let output = Command::new("ss")
+        let output = Command::new("/run/current-system/sw/bin/ss")
             .args(["-tn", "state", "established", "sport", "= :22"])
             .stdout(Stdio::piped())
             .stderr(Stdio::piped())
@@ -701,9 +701,10 @@ impl ServiceCollector {
         // Check which sites are actually accessible
         let mut accessible_sites = Vec::new();
         for site in sites {
-            // Temporarily disable accessibility check - show all parsed sites
+            if self.check_site_accessibility(&site).await {
                 accessible_sites.push(site); // Remove checkmark - status will be shown via sub_service row status
             }
+        }
         
         // Limit to reasonable number
         accessible_sites.truncate(15);
@@ -766,7 +767,7 @@ impl ServiceCollector {
             
             match tokio::time::timeout(
                 Duration::from_secs(5),
-                Command::new("curl")
+                Command::new("/run/current-system/sw/bin/curl")
                     .args(["-s", "-I", "--max-time", "3", &url])
                     .stdout(Stdio::piped())
                     .stderr(Stdio::piped())