Introduces the Operator subsystem — persistent agents that run on a schedule
with automatic state management. Built on a new OperativeAgent (extends
ToolUsingAgent) with built-in session persistence, memory state recall, and
tick-aware lifecycle. Includes OperatorManager for lifecycle management,
TOML manifest format, 4 bundled operators, 9 CLI commands, and 39 tests.
New: OperativeAgent, operators package (types/loader/manager),
operators CLI, OperatorsConfig, OPERATOR_TICK_START/END events.
Modified: system.py (system_prompt/operator_id passthrough),
scheduler.py (operator metadata forwarding), config.py, events.py.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
