The interceptor __call__ method must be async and follow the proper
signature: async __call__(request, handler) -> result
Previous implementation was synchronous and had wrong signature, causing
'object function can't be used in await expression' error.
Resolves issue where MCP trade tools couldn't access SIGNATURE and TODAY_DATE
during concurrent API simulations, causing "SIGNATURE environment variable is
not set" errors.
Problem:
- MCP services run as separate HTTP processes
- Multiple simulations execute concurrently via ThreadPoolExecutor
- Environment variables from executor process not accessible to MCP services
Solution:
- Add ContextInjector that implements ToolCallInterceptor
- Automatically injects signature and today_date into buy/sell tool calls
- Trade tools accept optional parameters, falling back to config/env
- BaseAgent creates interceptor and updates today_date per session
Changes:
- agent/context_injector.py: New interceptor for context injection
- agent/base_agent/base_agent.py: Create and use ContextInjector
- agent_tools/tool_trade.py: Add optional signature/today_date parameters
Benefits:
- Supports concurrent multi-model simulations
- Maintains backward compatibility with CLI mode
- AI model unaware of injected parameters
- Remove _log_message() and _setup_logging() methods
- Remove all calls to logging methods in run_trading_session()
- Update log_path parameter docstring for clarity
- Update integration test to verify conversation history instead of JSONL files
- Reasoning logs now stored exclusively in database via model_day_executor
- Conversation history tracking preserved in memory
Related: Task 6 of reasoning logs API feature
- Add conversation_history instance variable to BaseAgent.__init__
- Create _capture_message() method to capture messages with timestamps
- Create get_conversation_history() method to retrieve conversation
- Create clear_conversation_history() method to reset history
- Modify run_trading_session() to capture user prompts and AI responses
- Add comprehensive unit tests for conversation tracking
- Fix datetime deprecation warning by using timezone-aware datetime
All tests pass successfully.
