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

pkg/tui/update.go

@@ -14,6 +14,12 @@ const (
 	IntentLoadLogs     IntentKind = "load_logs"
 	IntentTick         IntentKind = "tick"
 	IntentQuit         IntentKind = "quit"
+
+	// Server-wide bulk operations
+	IntentStartAll   IntentKind = "start_all"
+	IntentStopAll    IntentKind = "stop_all"
+	IntentRestartAll IntentKind = "restart_all"
+	IntentKillAll    IntentKind = "kill_all"
 )
 
 // Intent is pure data describing a side effect to execute.
@@ -45,9 +51,11 @@ func Update(model Model, msg interface{}) (Model, []Intent) {
 
 	case MsgAgentsLoaded:
 		model.Agents = m.Agents
-		// Clamp cursor
-		if model.Cursor >= len(model.Agents) && len(model.Agents) > 0 {
-			model.Cursor = len(model.Agents) - 1
+		// Clamp cursor only on screens that use the agent list
+		if model.Screen == ScreenAgentList {
+			if model.Cursor >= len(model.Agents) && len(model.Agents) > 0 {
+				model.Cursor = len(model.Agents) - 1
+			}
 		}
 		return model, []Intent{{Kind: IntentTick}}
 
@@ -59,6 +67,14 @@ func Update(model Model, msg interface{}) (Model, []Intent) {
 		}
 		return model, []Intent{{Kind: IntentLoadAgents}}
 
+	case MsgServerActionDone:
+		if m.Failed == 0 {
+			model.StatusMsg = fmt.Sprintf("%s: %d agents OK", m.Action, m.Total)
+		} else {
+			model.StatusMsg = fmt.Sprintf("%s: %d/%d failed", m.Action, m.Failed, m.Total)
+		}
+		return model, []Intent{{Kind: IntentLoadAgents}}
+
 	case MsgLogsLoaded:
 		model.LogLines = m.Lines
 		model.LogScroll = max(0, len(m.Lines)-visibleLogLines(model))
@@ -92,6 +108,8 @@ func updateKey(model Model, key KeyMsg) (Model, []Intent) {
 		return updateAgentActions(model, key)
 	case ScreenLogs:
 		return updateLogs(model, key)
+	case ScreenServer:
+		return updateServerScreen(model, key)
 	}
 	return model, nil
 }
@@ -109,6 +127,11 @@ func updateMainScreen(model Model, key KeyMsg) (Model, []Intent) {
 			model.Screen = ScreenAgentList
 			model.Cursor = 0
 			return model, []Intent{{Kind: IntentLoadAgents}}
+		case "Server":
+			model.Screen = ScreenServer
+			model.Cursor = 0
+			model.StatusMsg = ""
+			return model, []Intent{{Kind: IntentLoadAgents}}
 		case "Quit":
 			return model, []Intent{{Kind: IntentQuit}}
 		}
@@ -210,6 +233,44 @@ func updateLogs(model Model, key KeyMsg) (Model, []Intent) {
 	return model, nil
 }
 
+func updateServerScreen(model Model, key KeyMsg) (Model, []Intent) {
+	opts := ServerMenuOptions()
+
+	switch key.Str {
+	case "0":
+		model.Screen = ScreenMain
+		model.Cursor = 0
+		model.StatusMsg = ""
+	case "up", "k":
+		model.Cursor = clamp(model.Cursor-1, 0, len(opts)-1)
+	case "down", "j":
+		model.Cursor = clamp(model.Cursor+1, 0, len(opts)-1)
+	case "enter":
+		if model.Cursor < len(opts) {
+			return executeServerAction(model, opts[model.Cursor].Label)
+		}
+	}
+	return model, nil
+}
+
+func executeServerAction(model Model, action string) (Model, []Intent) {
+	switch action {
+	case "Start All":
+		model.StatusMsg = "Starting all agents..."
+		return model, []Intent{{Kind: IntentStartAll}}
+	case "Stop All":
+		model.StatusMsg = "Stopping all agents..."
+		return model, []Intent{{Kind: IntentStopAll}}
+	case "Restart All":
+		model.StatusMsg = "Restarting all agents..."
+		return model, []Intent{{Kind: IntentRestartAll}}
+	case "Kill All":
+		model.StatusMsg = "Killing all agents..."
+		return model, []Intent{{Kind: IntentKillAll}}
+	}
+	return model, nil
+}
+
 // ── pure helpers ─────────────────────────────────────────────────────────
 
 func visibleLogLines(m Model) int {