Summary

• Extract duplicated helper logic from Discord, Slack, and Telegram adapters into src/adapters/shared/:
  • attachments.ts — createAttachmentTarget and downloadAttachmentToFile for unified attachment handling
  • channel-log.ts — appendChannelLog and createBotLogEntry for consistent JSONL logging
  • serial-queue.ts — SerialWorkQueue for sequential event processing
• Refactor all three adapter bots to use the shared modules, removing ~200 lines of duplicated code
• Add dedicated unit tests for each shared module

Test plan

• test/shared-attachments.test.ts — attachment target creation and file download
• test/shared-channel-log.test.ts — log directory creation and entry formatting
• test/shared-serial-queue.test.ts — queue ordering, error handling, and concurrency

🤖 Generated with Claude Code