refactor: consolidate typing lifecycle and queue policy

src/discord/monitor/message-handler.process.ts

@@ -569,6 +569,7 @@ export async function processDiscordMessage(ctx: DiscordMessagePreflightContext)
   const { dispatcher, replyOptions, markDispatchIdle } = createReplyDispatcherWithTyping({
     ...prefixOptions,
     humanDelay: resolveHumanDelayConfig(cfg, route.agentId),
+    typingCallbacks,
     deliver: async (payload: ReplyPayload, info) => {
       const isFinal = info.kind === "final";
       if (payload.isReasoning) {
@@ -669,8 +670,6 @@ export async function processDiscordMessage(ctx: DiscordMessagePreflightContext)
       await typingCallbacks.onReplyStart();
       await statusReactions.setThinking();
     },
-    onIdle: typingCallbacks.onIdle,
-    onCleanup: typingCallbacks.onCleanup,
   });
 
   let dispatchResult: Awaited<ReturnType<typeof dispatchInboundMessage>> | null = null;