v2 phase 4+5: Discord via Chat SDK, expanded MCP tools, message seq IDs
- Chat SDK bridge + Discord adapter (gateway listener, message routing)
- MCP tools refactored into modular structure: core (send_message, send_file,
edit_message, add_reaction), scheduling (schedule/list/cancel/pause/resume
tasks), interactive (ask_user_question, send_card), agents (send_to_agent)
- Message seq IDs: shared integer sequence across messages_in/out so agents
see small numeric IDs instead of platform snowflakes
- busy_timeout=5000 for session DB (poll loop + MCP server concurrent access)
- Always copy agent-runner source to fix stale cache when non-index files change
- Seed script for Discord testing, e2e test script
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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