Polish desktop typing and agents UI (#92)

desktop/src/shared/api/relayClient.ts

@@ -9,6 +9,7 @@ import type { PresenceStatus, RelayEvent } from "@/shared/api/types";
 import {
   CHANNEL_EVENT_KINDS,
   KIND_STREAM_MESSAGE,
+  KIND_TYPING_INDICATOR,
 } from "@/shared/constants/kinds";
 import {
   getTextPayload,
@@ -118,6 +119,20 @@ class RelayClient {
     return this.subscribe(this.buildChannelFilter(channelId, 50), onEvent);
   }
 
+  async subscribeToTypingIndicators(
+    channelId: string,
+    onEvent: (event: RelayEvent) => void,
+  ) {
+    return this.subscribe(
+      {
+        kinds: [KIND_TYPING_INDICATOR],
+        "#h": [channelId],
+        limit: 10,
+      },
+      onEvent,
+    );
+  }
+
   async subscribeToAllStreamMessages(onEvent: (event: RelayEvent) => void) {
     return this.subscribe(this.buildGlobalStreamFilter(50), onEvent);
   }