refactor(agent): scope queue actions to edit and remove

packages/client/runtime/src/client/contract/session.ts

@@ -41,7 +41,7 @@ export interface ISession {
   /**
    * Apply one mutation to a still-pending queue occurrence.
    * @param itemId - agent-owned inbox occurrence identity.
-   * @param action - edit, remove, or promote operation.
+   * @param action - edit or remove operation.
    * @returns acceptance, or a business/transport error.
    */
   updateQueue(itemId: InboxItemId, action: QueueAction): Promise<RpcResult<{ accepted: true }>>

packages/client/runtime/src/client/sessions/conversation.ts

@@ -222,7 +222,6 @@ export interface QueuedMessage {
   readonly preview: string
   /** Complete editable text; null when the message contains non-text blocks. */
   readonly text: string | null
-  readonly placement: 'queued' | 'steering'
 }
 
 /** In-progress assistant output (chunk accumulator product). */

packages/client/runtime/src/client/sessions/session.ts

@@ -407,7 +407,6 @@ export class Session implements SessionFace {
           id: item.id,
           preview: queuePreviewOf(item.message.content),
           text: queueTextOf(item.message.content),
-          placement: item.placement,
         }))
         this.queueRev++
         this.notifier.markDirty()