feat: implement server-wide management actions and enhance TUI dashboard

pkg/tui/view.go

@@ -16,6 +16,8 @@ func View(model Model) string {
 		return viewAgentActions(model)
 	case ScreenLogs:
 		return viewLogs(model)
+	case ScreenServer:
+		return viewServer(model)
 	default:
 		return ""
 	}
@@ -78,6 +80,10 @@ func viewAgentList(m Model) string {
 
 		b.WriteString(fmt.Sprintf("  %s%s %-20s %-8s %s\n",
 			cursor, icon, a.ID, a.Version, status))
+
+		if a.Instances > 1 {
+			b.WriteString(fmt.Sprintf("     ⚠ WARNING: %d instances running!\n", a.Instances))
+		}
 	}
 
 	if m.StatusMsg != "" {
@@ -177,6 +183,54 @@ func viewLogs(m Model) string {
 	return b.String()
 }
 
+func viewServer(m Model) string {
+	var b strings.Builder
+
+	b.WriteString("\n  Server Management\n")
+	b.WriteString("  " + strings.Repeat("─", 44) + "\n")
+
+	// Summary
+	running, stopped, disabled := countStatuses(m.Agents)
+	total := len(m.Agents)
+	if total > 0 {
+		b.WriteString(fmt.Sprintf("  %d agents: %d running, %d stopped, %d disabled\n", total, running, stopped, disabled))
+	} else {
+		b.WriteString("  Loading...\n")
+	}
+
+	// Agent status list (compact)
+	if total > 0 {
+		b.WriteString("\n")
+		for _, a := range m.Agents {
+			icon := "○"
+			if !a.Enabled {
+				icon = " "
+			} else if a.Running {
+				icon = "●"
+			}
+			b.WriteString(fmt.Sprintf("  %s %s\n", icon, a.ID))
+		}
+	}
+
+	b.WriteString("\n")
+
+	// Action menu
+	for i, opt := range ServerMenuOptions() {
+		cursor := "  "
+		if i == m.Cursor {
+			cursor = "> "
+		}
+		b.WriteString(fmt.Sprintf("  %s%-16s %s\n", cursor, opt.Label, opt.Desc))
+	}
+
+	if m.StatusMsg != "" {
+		b.WriteString("\n  " + m.StatusMsg + "\n")
+	}
+
+	b.WriteString("\n  ↑↓ navegar  enter ejecutar  0 volver\n")
+	return b.String()
+}
+
 func countStatuses(agents []AgentView) (running, stopped, disabled int) {
 	for _, a := range agents {
 		switch {