guardrails

name	guardrails
description	Pre-flight checklists before coding, post-implementation self-review after. Catches arch violations, missing observability, security oversights.

Guardrails

When to Invoke

• Pre-Flight: before writing any code
• Self-Review: after writing code, before verification

Pre-Flight

• Identified applicable rules from .gemini/rules/
• Searched for existing patterns (Pattern Discovery, architectural-pattern.md)
• Project structure aligned (project-structure.md)
• I/O boundaries identified for abstraction
• Test strategy determined (unit/integration/E2E)
• Reviewed rule-priority.md for conflicts

Any item unchecked → STOP and resolve.

Post-Implementation Self-Review

Security:

• No hardcoded secrets/config
• User input validated at boundaries
• Parameterized queries (no SQL concat)

Testability:

• I/O behind interfaces
• Business logic pure (no side effects in calcs)
• Dependencies injected

Observability:

• Public ops logged (start/success/failure)
• Structured logging with correlationId
• Appropriate log levels

Error Handling:

• Explicit error paths (no empty catch)
• Errors wrapped with context
• Resources cleaned up (defer/finally)

Testing:

• Happy path covered
• ≥2 error paths covered
• Domain edge cases
• I/O adapters modified → integration tests
• UI modified → E2E tests exist/planned

Consistency:

• Follows codebase patterns (>80%)
• Naming conventions match
• File org matches project-structure.md

Language-Specific

Language	File
Go	languages/go.md
TypeScript	languages/typescript.md
Flutter/Dart	languages/flutter.md
Rust	languages/rust.md

Load only for active languages. Missing file → flag for creation.

Compliance

• All mandates (always-on rules)
• Architectural Patterns @.gemini/rules/architectural-pattern.md
• Testing Strategy @.gemini/rules/testing-strategy.md
• Rule Priority @.gemini/rules/rule-priority.md