trading-mcp

## ADDED Requirements ### Requirement: Configuration is validated The system SHALL validate configuration values using pydantic models and reject invalid types or missing required fields. #### Scenario: Invalid configuration is rejected - **WHEN** a required configuration field is missing or has the wrong type - **THEN** a validation error is raised that includes the field name ### Requirement: Configuration supports environment overrides The system SHALL allow configuration values to be provided via environment variables in addition to explicit instantiation. #### Scenario: Environment overrides are applied - **WHEN** an environment variable corresponding to a configuration field is set - **THEN** the resolved configuration uses the environment value