Edit Issue - .issue.db

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Description

## 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

Due Date (YYYY-MM-DD)

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Edit Issue #230