fix(ai): honor codex transport option

closes #4083

packages/agent/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Changed
+
+- Changed the default agent transport to `auto` so providers can use their best available transport by default ([#4083](https://github.com/badlogic/pi-mono/issues/4083)).
+
 ## [0.72.0] - 2026-05-01
 
 ### Added

packages/agent/src/agent.ts

@@ -201,7 +201,7 @@ export class Agent {
 		this.followUpQueue = new PendingMessageQueue(options.followUpMode ?? "one-at-a-time");
 		this.sessionId = options.sessionId;
 		this.thinkingBudgets = options.thinkingBudgets;
-		this.transport = options.transport ?? "sse";
+		this.transport = options.transport ?? "auto";
 		this.maxRetryDelayMs = options.maxRetryDelayMs;
 		this.toolExecution = options.toolExecution ?? "parallel";
 	}