Revert the timeline optimistic and pagination rework (#2596)

* Add npm release track invariant and beta dist-tag procedure

* Revert "Keep older chat history and image previews stable (#2490)"

The timeline optimistic/pagination rework needs more work than main releases can wait for. Reverted together with #2484; both are reapplied on integration/timeline-optimistic-rework.

* Revert "Stop completed turns from appearing stuck (#2484)"

See the #2490 revert. #2490 built on this submission-authority change, so the two revert and reapply as a pair.

packages/client/src/daemon-client.ts

@@ -324,11 +324,6 @@ export interface SendMessageOptions {
   attachments?: SendAgentMessageRequest["attachments"];
 }
 
-export interface SendMessageResult {
-  /** Undefined when connected to a daemon predating message submission disposition. */
-  outOfBand?: boolean;
-}
-
 export interface AgentAttentionRequiredNotification {
   agentId: string;
   reason: "finished" | "error" | "permission";
@@ -2864,7 +2859,7 @@ export class DaemonClient {
     agentId: string,
     text: string,
     options?: SendMessageOptions,
-  ): Promise<SendMessageResult> {
+  ): Promise<void> {
     const requestId = this.createRequestId();
     const messageId = options?.messageId ?? crypto.randomUUID();
     const message = SessionInboundMessageSchema.parse({
@@ -2893,7 +2888,6 @@ export class DaemonClient {
     if (!payload.accepted) {
       throw new Error(payload.error ?? "sendAgentMessage rejected");
     }
-    return payload.outOfBand === undefined ? {} : { outOfBand: payload.outOfBand };
   }
 
   async sendMessage(agentId: string, text: string, options?: SendMessageOptions): Promise<void> {

packages/client/src/index.ts

@@ -478,9 +478,7 @@ function createAgentHandleFactory(daemonClient: DaemonClient): AgentHandleFactor
         latest = result?.agent ?? null;
         return result;
       },
-      send: async (text, options) => {
-        await daemonClient.sendAgentMessage(id, text, options);
-      },
+      send: (text, options) => daemonClient.sendAgentMessage(id, text, options),
       archive: async () => {
         const result = await daemonClient.archiveAgent(id);
         if (latest) {