fix(agent-loop): preserve unified send contracts

packages/ui/tui/src/index.ts

@@ -2519,7 +2519,7 @@ export function createTuiChat(
   }
 
   const dispatchMessage = (content: ContentBlock[], contexts: HookContext[]): void => {
-    if (agent.status === 'disposed') {
+    if (disposed) {
       appendNotice(`Agent "${agent.id}" is disposed.`, 'error')
     } else if (agent.status === 'running') {
       agent.steer(content, { source: { kind: 'user' }, contexts })

packages/ui/user-approval/src/index.ts

@@ -235,8 +235,8 @@ export class ApprovalService extends Service {
       })
     })
 
-    // Visibility layer 2: the boundary narrator. pre-step runs after prompt
-    // assembly but before the request history is derived, so the notice is
+    // Visibility layer 2: the boundary narrator. agent/step runs before the
+    // request history is derived, so the notice is
     // seen by THIS step's request: idle-time flip-flops coalesce at the
     // turn's first step (net-zero → nothing), and a mid-turn switch is
     // narrated no later than the next step. What each session was last told
@@ -246,7 +246,7 @@ export class ApprovalService extends Service {
     // switch by the user; otherwise the configured default moved under the
     // session (operator/config).
     const narrated = new WeakMap<Agent['session'], ApprovalPolicy>()
-    ctx.on('agent/pre-step', (agent) => {
+    ctx.on('agent/step', (agent) => {
       const session = agent.session
       const events = session.events
       let overrideIndex = -1