fix: Chat SDK bridge delivery and typing for non-Discord adapters

- Use platformId directly as thread ID in deliver() and setTyping()
  instead of calling encodeThreadId with Discord-shaped args — platformId
  is already in the adapter's encoded format (e.g. "telegram:6037840640")
- Add triggerTyping() in delivery.ts, call from router on message route
- Enable Telegram channel in barrel
- Verified E2E: Telegram message in → agent → typing indicator → response

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/channels/chat-sdk-bridge.ts

@@ -162,7 +162,9 @@ export function createChatSdkBridge(config: ChatSdkBridgeConfig): ChannelAdapter
     },
 
     async deliver(platformId: string, threadId: string | null, message) {
-      const tid = threadId ?? adapter.encodeThreadId({ guildId: '', channelId: platformId } as never);
+      // platformId is already in the adapter's encoded format (e.g. "telegram:6037840640",
+      // "discord:guildId:channelId") — use it directly as the thread ID
+      const tid = threadId ?? platformId;
       const content = message.content as Record<string, unknown>;
 
       if (content.operation === 'edit' && content.messageId) {
@@ -210,7 +212,7 @@ export function createChatSdkBridge(config: ChatSdkBridgeConfig): ChannelAdapter
     },
 
     async setTyping(platformId: string, threadId: string | null) {
-      const tid = threadId ?? adapter.encodeThreadId({ guildId: '', channelId: platformId } as never);
+      const tid = threadId ?? platformId;
       await adapter.startTyping(tid);
     },
 

src/channels/index.ts

@@ -8,7 +8,7 @@ import './discord.js';
 // import './slack.js';
 
 // telegram
-// import './telegram.js';
+import './telegram.js';
 
 // github
 // import './github.js';

src/delivery.ts

@@ -42,6 +42,15 @@ export function setDeliveryAdapter(adapter: ChannelDeliveryAdapter): void {
   deliveryAdapter = adapter;
 }
 
+/** Show typing indicator on a channel. Called when a message is routed to the agent. */
+export async function triggerTyping(channelType: string, platformId: string, threadId: string | null): Promise<void> {
+  try {
+    await deliveryAdapter?.setTyping?.(channelType, platformId, threadId);
+  } catch {
+    // Typing is best-effort — don't fail routing if it errors
+  }
+}
+
 /** Start the active container poll loop (~1s). */
 export function startActiveDeliveryPoll(): void {
   if (activePolling) return;

src/router.ts

@@ -5,6 +5,7 @@
  * → resolve/create session → write messages_in → wake container
  */
 import { getMessagingGroupByPlatform, createMessagingGroup, getMessagingGroupAgents } from './db/messaging-groups.js';
+import { triggerTyping } from './delivery.js';
 import { log } from './log.js';
 import { resolveSession, writeSessionMessage } from './session-manager.js';
 import { wakeContainer } from './container-runner.js';
@@ -99,7 +100,10 @@ export async function routeInbound(event: InboundEvent): Promise<void> {
     created,
   });
 
-  // 5. Wake container
+  // 5. Show typing indicator while agent processes
+  triggerTyping(event.channelType, event.platformId, event.threadId);
+
+  // 6. Wake container
   const freshSession = getSession(session.id);
   if (freshSession) {
     await wakeContainer(freshSession);