docs: Update workflow rules, create new async tool track, and log journal

conductor/tracks/async_tool_execution_20260303/plan.md

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+# Implementation Plan: Asynchronous Tool Execution Engine (async_tool_execution_20260303)
+
+## Phase 1: Engine Refactoring
+- [ ] Task: Initialize MMA Environment `activate_skill mma-orchestrator`
+- [ ] Task: Refactor `mcp_client.py` for async execution
+    - [ ] WHERE: `mcp_client.py`
+    - [ ] WHAT: Convert tool execution wrappers to `async def` or wrap them in thread executors.
+    - [ ] HOW: Use `asyncio.to_thread` for blocking I/O bound tools.
+    - [ ] SAFETY: Ensure thread safety for shared resources.
+- [ ] Task: Update `ai_client.py` dispatcher
+    - [ ] WHERE: `ai_client.py` (around tool dispatch loop)
+    - [ ] WHAT: Use `asyncio.gather` to execute multiple tool calls concurrently.
+    - [ ] HOW: Await the gathered results before proceeding with the AI loop.
+    - [ ] SAFETY: Handle tool execution exceptions gracefully without crashing the gather group.
+- [ ] Task: Conductor - User Manual Verification 'Phase 1' (Protocol in workflow.md)
+
+## Phase 2: Testing & Validation
+- [ ] Task: Implement async tool execution tests
+    - [ ] WHERE: `tests/test_async_tools.py`
+    - [ ] WHAT: Write a test verifying that multiple tools run concurrently (e.g., measuring total time vs sum of individual sleep times).
+    - [ ] HOW: Use a mock tool with an explicit sleep delay.
+    - [ ] SAFETY: Standard pytest setup.
+- [ ] Task: Full Suite Validation
+- [ ] Task: Conductor - User Manual Verification 'Phase 2' (Protocol in workflow.md)