Function handleChannelMessage

server/src/addie/bolt-app.ts:3708–4247

* Handle channel messages (not mentions) for HITL proposed responses * * When Addie sees a message in a channel it's in, it uses the router to * determine if/how to respond. Responses are queued for admin approval.

({
  event,
  context,
}: SlackEventMiddlewareArgs<'message'> & { context: { botUserId?: string } })

 * determine if/how to respond. Responses are queued for admin approval.
 */
async function handleChannelMessage({
  event,
  context,
}: SlackEventMiddlewareArgs<'message'> & { context: { botUserId?: string } }): Promise<void> {
  // Skip if not initialized
  if (!claudeClient || !addieDb || !addieRouter) {
    return;
  }

  // Skip bot messages (including our own)
  if ('bot_id' in event && event.bot_id) {
    return;
  }

  // Skip subtypes (edits, deletes, etc.) - but only for non-DM messages
  // DMs can have forwarded messages where text is empty but attachments have content
  const hasText = 'text' in event && event.text;
  const hasAttachments = 'attachments' in event && Array.isArray(event.attachments) && event.attachments.length > 0;
  const hasFiles = 'files' in event && Array.isArray(event.files) && event.files.length > 0;
  const hasSubtype = 'subtype' in event && event.subtype;

  const userId = 'user' in event ? event.user : undefined;

  // Handle message_deleted for any channel type (DMs included)
  if (hasSubtype && 'subtype' in event && event.subtype === 'message_deleted') {
    const deletedTs = 'deleted_ts' in event ? (event as { deleted_ts: string }).deleted_ts : undefined;
    if (deletedTs) {
      const externalId = `${event.channel}:${deletedTs}`;
      const threadService = getThreadService();
      const deleted = await threadService.markSlackDeleted('slack', externalId);
      if (deleted) {
        logger.info({ channelId: event.channel, deletedTs }, 'Addie Bolt: Marked thread slack_deleted for deleted Slack message');
      }
    }
    return;
  }

  // Handle DMs differently - route to the user message handler
  // For DMs, allow messages with attachments or files even if text is empty
  if (event.channel_type === 'im') {
    // Log detailed info for DM debugging (use same check as middleware for consistency)
    const hasThreadTs = 'thread_ts' in event && event.thread_ts !== undefined;
    logger.debug({
      channelId: event.channel,
      userId,
      hasText,
      hasAttachments,
      hasFiles,
      hasSubtype,
      subtype: 'subtype' in event ? event.subtype : undefined,
      hasThreadTs,
      threadTs: 'thread_ts' in event ? event.thread_ts : undefined,
      ts: 'ts' in event ? event.ts : undefined,
    }, 'Addie Bolt: Received DM in handleChannelMessage');

    // DMs with thread_ts are handled by the Assistant framework (handleUserMessage).
    // Only handle first DMs (no thread_ts) here to avoid sending duplicate responses.
    if (hasThreadTs) {