#230 OpenAPI: Replay & Debugging Endpoints (7 endpoints)

## Scope Document replay and debugging endpoints: - `api/blueprints/v1/replay.py` (3 endpoints) - `api/blueprints/v1/circuit_breakers.py` (4 endpoints) ## Replay Endpoints (3) 1. GET /workflows/{id}/replay - Get replay data - Query: format (text|json), verbose, include_children 2. POST /workflows/{id}/simulate - Run simulation - Body: resume_from (step name) 3. GET /workflows/{id}/replay/steps - List checkpoints ## Circuit Breakers Endpoints (4) 1. GET /circuit-breakers - List circuit breakers 2. GET /circuit-breakers/{name} - Get circuit breaker state 3. POST /circuit-breakers/{name}/reset - Reset circuit breaker 4. GET /circuit-breakers/stats - Get circuit breaker stats ## Pydantic Models ```python class ReplayData(BaseModel): run_metadata: dict task_params: dict checkpoints: dict audit_log: list[dict] run_result: Any class SimulationRequest(BaseModel): resume_from: str | None = None class SimulationReport(BaseModel): status: str # success, failed, diverged simulation_status: str workflow_run_id: str executed_steps: list[str] divergences: list[dict] replay_logs: list[str] original_result: Any simulated_result: Any class CircuitBreakerState(BaseModel): name: str state: str # closed, open, half_open failure_count: int last_failure: datetime | None cooldown_until: datetime | None ``` ## Depends On - #224 (Infrastructure Setup) ## Acceptance Criteria - [ ] All 7 endpoints documented - [ ] Simulation workflow explained - [ ] Circuit breaker states documented