# Compile Guardrails
**Last Updated:** 2026-04-05

Preventive rules to reduce repeat compile failures.

## Core Prevention Rules
- [ ] Verify NT8 signatures in official docs before adding/changing any `protected override`.
- [ ] Keep NinjaScript edits within task scope and allowed file boundaries.
- [ ] Enforce C# 5.0 syntax only; reject C# 6+ constructs.
- [ ] Keep managed order sequence correct (stop/target before entry on same bar).
- [ ] Guard `OnBarUpdate` by `BarsInProgress` and bar readiness.
- [ ] Do not use unsupported attributes/types/enums without confirmation.

## Verification Gates
- [ ] Run `.\verify-build.bat` after changes.
- [ ] Run focused tests for changed area.
- [ ] If NinjaScript touched, compile in NT8 NinjaScript Editor.

## Update Rule
- [ ] Add a new guardrail entry whenever a compile issue reveals a missing prevention rule.