**Features Added**: 1. **Agent Registry (agent_registry.py)** - Thread-safe global singleton for MCP tool access to Agent instance - Enables MCP tools to call Agent.delegate() without circular imports - Registered at bot startup in bot_runner.py 2. **Sub-Agent Manager (sub_agent_manager.py)** - Watchdog system monitoring sub-agent lifecycle - Detects hung agents (5min timeout, 30s check interval) - Auto-cleanup and status tracking 3. **delegate_task MCP Tool (mcp_tools.py)** - Exposes Agent.delegate() to Claude via MCP protocol - Enables parallel sub-agent execution via tool calls - Supports specialist prompts and agent ID caching 4. **Memory Write Locks (memory_system.py)** - Thread-safe writes to prevent file corruption - Protects write_memory(), update_soul(), update_user() 5. **Diagram Tools** - Mermaid MCP server (flowcharts, sequence diagrams, etc.) - Excalidraw MCP server (hand-drawn style diagrams) - Config files in config/ directory 6. **Adapter Improvements** - Enhanced error handling across all adapters - Unified logging patterns **Testing**: Ready for parallel sub-agent testing Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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