fix(agent-codex): launch workers with codex exec

.changeset/fix-codex-exec-launch.md

@@ -0,0 +1,5 @@
+---
+"@aoagents/ao-plugin-agent-codex": patch
+---
+
+Launch Codex worker sessions with `codex exec` so spawned AO workers run non-interactively.

packages/plugins/agent-codex/src/index.test.ts

@@ -267,7 +267,7 @@ describe("getLaunchCommand", () => {
 
   it("generates base command", () => {
     expect(agent.getLaunchCommand(makeLaunchConfig())).toBe(
-      "'codex' -c check_for_update_on_startup=false",
+      "'codex' exec -c check_for_update_on_startup=false",
     );
   });
 
@@ -317,7 +317,7 @@ describe("getLaunchCommand", () => {
       makeLaunchConfig({ permissions: "permissionless", model: "o3", prompt: "Go" }),
     );
     expect(cmd).toBe(
-      "'codex' -c check_for_update_on_startup=false --dangerously-bypass-approvals-and-sandbox --model 'o3' -c model_reasoning_effort=high -- 'Go'",
+      "'codex' exec -c check_for_update_on_startup=false --dangerously-bypass-approvals-and-sandbox --model 'o3' -c model_reasoning_effort=high -- 'Go'",
     );
   });
 
@@ -1971,15 +1971,15 @@ describe("postLaunchSetup", () => {
 
     // Before postLaunchSetup, binary is "codex"
     expect(agent.getLaunchCommand(makeLaunchConfig())).toBe(
-      "'codex' -c check_for_update_on_startup=false",
+      "'codex' exec -c check_for_update_on_startup=false",
     );
 
     // After postLaunchSetup resolves the binary
     await agent.postLaunchSetup!(makeSession({ workspacePath: "/workspace/test" }));
 
     // Now getLaunchCommand should use the resolved binary
     expect(agent.getLaunchCommand(makeLaunchConfig())).toBe(
-      "'/opt/bin/codex' -c check_for_update_on_startup=false",
+      "'/opt/bin/codex' exec -c check_for_update_on_startup=false",
     );
   });
 });

packages/plugins/agent-codex/src/index.ts

@@ -606,7 +606,7 @@ function createCodexAgent(): Agent {
 
     getLaunchCommand(config: AgentLaunchConfig): string {
       const binary = resolvedBinary ?? "codex";
-      const parts: string[] = [shellEscape(binary)];
+      const parts: string[] = [shellEscape(binary), "exec"];
       appendNoUpdateCheckFlag(parts);
 
       appendApprovalFlags(parts, config.permissions);