Display tool call metrics: Add ⚒ counter to token usage display

- Show tool call count alongside token metrics in TUI and console renderers
- TUI: Display at bottom with format "↑X ↓Y ⚒Z"
- Console: Show metrics after assistant messages complete
- Counter increments on each tool_call event

packages/agent/src/renderers/tui-renderer.ts

@@ -61,6 +61,7 @@ export class TuiRenderer implements AgentEventReceiver {
 	private lastOutputTokens = 0;
 	private lastCacheReadTokens = 0;
 	private lastCacheWriteTokens = 0;
+	private toolCallCount = 0;
 	private tokenStatusComponent: TextComponent | null = null;
 
 	constructor() {
@@ -200,6 +201,8 @@ export class TuiRenderer implements AgentEventReceiver {
 			}
 
 			case "tool_call":
+				this.toolCallCount++;
+				this.updateTokenDisplay();
 				this.chatContainer.addChild(new TextComponent(chalk.yellow(`[tool] ${event.name}(${event.args})`)));
 				break;
 
@@ -300,6 +303,11 @@ export class TuiRenderer implements AgentEventReceiver {
 			tokenText += chalk.dim(` (${cacheText.join(" ")})`);
 		}
 
+		// Add tool call count
+		if (this.toolCallCount > 0) {
+			tokenText += chalk.dim(` ⚒${this.toolCallCount}`);
+		}
+
 		this.tokenStatusComponent = new TextComponent(tokenText);
 		this.tokenContainer.addChild(this.tokenStatusComponent);
 	}