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

pkg/tui/model.go

@@ -10,6 +10,7 @@ const (
 	ScreenAgentList           // list all agents with status
 	ScreenAgentActions        // actions for a selected agent
 	ScreenLogs                // tail log output
+	ScreenServer              // server-wide process management
 )
 
 // Model is the complete TUI state — pure data.
@@ -34,10 +35,11 @@ type AgentView struct {
 	Enabled bool
 	Running bool
 	PID     int
-	Uptime  string // formatted: "2h 15m"
-	Memory  string // formatted: "42 MB"
-	CPU     string // formatted: "1.2%"
-	LogSize string // formatted: "350 KB"
+	Instances int    // number of running instances (>1 means duplicates)
+	Uptime    string // formatted: "2h 15m"
+	Memory    string // formatted: "42 MB"
+	CPU       string // formatted: "1.2%"
+	LogSize   string // formatted: "350 KB"
 }
 
 // MenuOption represents a selectable menu item.
@@ -50,10 +52,21 @@ type MenuOption struct {
 func MainMenuOptions() []MenuOption {
 	return []MenuOption{
 		{Label: "Agents", Desc: "Gestionar agentes"},
+		{Label: "Server", Desc: "Gestionar servidor"},
 		{Label: "Quit", Desc: "Salir"},
 	}
 }
 
+// ServerMenuOptions returns the available server-wide actions.
+func ServerMenuOptions() []MenuOption {
+	return []MenuOption{
+		{Label: "Start All", Desc: "Iniciar todos los agentes habilitados"},
+		{Label: "Stop All", Desc: "Detener todos los agentes"},
+		{Label: "Restart All", Desc: "Reiniciar todos los agentes"},
+		{Label: "Kill All", Desc: "SIGKILL forzado a todos"},
+	}
+}
+
 // AgentActionOptions returns the available actions based on agent state.
 func AgentActionOptions(running bool) []MenuOption {
 	if running {