Fix storage display and improve UI formatting

- Fix duplicate storage pool issue by clearing cache on agent startup
- Change storage pool header text to normal color for better readability
- Improve services panel tree icons with proper └─ symbols for last items
- Ensure fresh metrics data on each agent restart

agent/src/cache/mod.rs

@@ -19,8 +19,8 @@ impl SimpleCache {
             persist_path: config.persist_path,
         };
         
-        // Load from disk on startup
+        // Clear cache file on startup to ensure fresh data
-        cache.load_from_disk();
+        cache.clear_cache_file();
         cache
     }
 
@@ -82,6 +82,16 @@ impl SimpleCache {
             }
         }
     }
+
+    /// Clear cache file on startup to ensure fresh data
+    fn clear_cache_file(&self) {
+        if Path::new(&self.persist_path).exists() {
+            match fs::remove_file(&self.persist_path) {
+                Ok(_) => info!("Cleared cache file {} on startup", self.persist_path),
+                Err(e) => warn!("Failed to clear cache file {}: {}", self.persist_path, e),
+            }
+        }
+    }
 }
 
 

dashboard/src/ui/mod.rs

@@ -578,7 +578,7 @@ impl TuiApp {
                     ),
                     ratatui::text::Span::styled(
                         pool_header_text,
-                        Typography::widget_title(),
+                        Style::default().fg(Theme::primary_text()),
                     ),
                 ];
                 let pool_header_para = Paragraph::new(ratatui::text::Line::from(pool_header_spans));

dashboard/src/ui/widgets/services.rs

@@ -129,6 +129,7 @@ impl ServicesWidget {
         &self,
         name: &str,
         info: &ServiceInfo,
+        is_last: bool,
     ) -> Vec<ratatui::text::Span<'static>> {
         // Truncate long sub-service names to fit layout (accounting for indentation)
         let short_name = if name.len() > 18 {
@@ -163,11 +164,12 @@ impl ServicesWidget {
         };
 
         let icon = StatusIcons::get_icon(info.widget_status);
+        let tree_symbol = if is_last { "└─" } else { "├─" };
 
         vec![
             // Indentation and tree prefix
             ratatui::text::Span::styled(
-                "  ├─ ".to_string(),
+                format!("  {} ", tree_symbol),
                 Style::default()
                     .fg(Theme::secondary_text())
                     .bg(Theme::background()),
@@ -333,7 +335,7 @@ impl Widget for ServicesWidget {
         }
 
         // Build hierarchical service list for display
-        let mut display_lines = Vec::new();
+        let mut display_lines: Vec<(String, Status, bool, Option<(ServiceInfo, bool)>)> = Vec::new();
 
         // Sort parent services alphabetically for consistent order
         let mut parent_services: Vec<_> = self.parent_services.iter().collect();
@@ -350,14 +352,15 @@ impl Widget for ServicesWidget {
                 let mut sorted_subs = sub_list.clone();
                 sorted_subs.sort_by(|(a, _), (b, _)| a.cmp(b));
 
-                for (sub_name, sub_info) in sorted_subs {
+                for (i, (sub_name, sub_info)) in sorted_subs.iter().enumerate() {
+                    let is_last_sub = i == sorted_subs.len() - 1;
                     // Store sub-service info for custom span rendering
                     display_lines.push((
                         sub_name.clone(),
                         sub_info.widget_status,
                         true,
-                        Some(sub_info.clone()),
+                        Some((sub_info.clone(), is_last_sub)),
-                    )); // true = sub-service
+                    )); // true = sub-service, with is_last info
                 }
             }
         }
@@ -377,7 +380,8 @@ impl Widget for ServicesWidget {
             {
                 let spans = if *is_sub && sub_info.is_some() {
                     // Use custom sub-service span creation
-                    self.create_sub_service_spans(line_text, sub_info.as_ref().unwrap())
+                    let (service_info, is_last) = sub_info.as_ref().unwrap();
+                    self.create_sub_service_spans(line_text, service_info, *is_last)
                 } else {
                     // Use regular status spans for parent services
                     StatusIcons::create_status_spans(*line_status, line_text)