# Architecture Governance

## Runtime Flow (Authoritative)
```
SimpleORBNT8.cs
  -> NT8StrategyBase.cs
  -> SimpleORBStrategy.cs
  -> NT8OrderAdapter.cs
  -> PortfolioRiskManager.cs
  -> NinjaTrader 8
```

## Responsibilities
- `SimpleORBNT8.cs`: NT8 entry point and platform lifecycle bridge.
- `NT8StrategyBase.cs`: orchestration, risk gate sequencing, execution handoff, platform callbacks.
- `SimpleORBStrategy.cs`: signal generation and confluence grading only.
- `NT8OrderAdapter.cs`: execution bridge to NT8 managed order APIs.
- `PortfolioRiskManager.cs`: cross-strategy risk controls and account-level enforcement.

## Architectural Constraints
- Risk-first flow is mandatory; no strategy-level bypass of risk validation.
- Managed-order sequence remains required (`SetStopLoss` / `SetProfitTarget` before entry).
- C# 5.0 syntax only, .NET Framework 4.8 only.
- NT8 signatures must be verified against official NinjaTrader docs before API-touching edits.

## Governance Notes
- Core Risk/Sizing/OMS/Intelligence/Analytics layers are treated as complete and stable unless explicitly re-opened by approved work.
- Hardening changes are concentrated in targeted adapter/utility components per active-work scope.