Refactor index (#156)

* feat: add Telegram channel with agent swarm support

Add Telegram as a messaging channel that can run alongside WhatsApp
or standalone (TELEGRAM_ONLY mode). Includes bot pool support for
agent swarms where each subagent appears as a different bot identity
in the group.

- Add grammy dependency for Telegram Bot API
- Route messages through tg: JID prefix convention
- Add storeMessageDirect for non-Baileys channels
- Add sender field to IPC send_message for swarm identity
- Support TELEGRAM_BOT_TOKEN, TELEGRAM_ONLY, TELEGRAM_BOT_POOL config

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add index.ts refactor plan

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* refactor: extract channel abstraction, IPC, and router from index.ts

Break the 1088-line monolith into focused modules:
- src/channels/whatsapp.ts: WhatsAppChannel class implementing Channel interface
- src/ipc.ts: IPC watcher and task processing with dependency injection
- src/router.ts: message formatting, outbound routing, channel lookup
- src/types.ts: Channel interface, OnInboundMessage, OnChatMetadata types

Also adds regression test suite (98 tests), updates all documentation
and skill files to reflect the new architecture.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* ci: add test workflow for PRs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: remove accidentally committed pool-bot assets

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(ci): remove grammy from base dependencies

Grammy is installed by the /add-telegram skill, not a base dependency.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/types.ts

@@ -48,6 +48,7 @@ export interface NewMessage {
   sender_name: string;
   content: string;
   timestamp: string;
+  is_from_me?: boolean;
 }
 
 export interface ScheduledTask {
@@ -73,3 +74,28 @@ export interface TaskRunLog {
   result: string | null;
   error: string | null;
 }
+
+// --- Channel abstraction ---
+
+export interface Channel {
+  name: string;
+  connect(): Promise<void>;
+  sendMessage(jid: string, text: string): Promise<void>;
+  isConnected(): boolean;
+  ownsJid(jid: string): boolean;
+  disconnect(): Promise<void>;
+  // Optional: typing indicator. Channels that support it implement it.
+  setTyping?(jid: string, isTyping: boolean): Promise<void>;
+  // Whether to prefix outbound messages with the assistant name.
+  // Telegram bots already display their name, so they return false.
+  // WhatsApp returns true. Default true if not implemented.
+  prefixAssistantName?: boolean;
+}
+
+// Callback type that channels use to deliver inbound messages
+export type OnInboundMessage = (chatJid: string, message: NewMessage) => void;
+
+// Callback for chat metadata discovery.
+// name is optional — channels that deliver names inline (Telegram) pass it here;
+// channels that sync names separately (WhatsApp syncGroupMetadata) omit it.
+export type OnChatMetadata = (chatJid: string, timestamp: string, name?: string) => void;