No handwritten runtime code

Allowed edits

• specs/**, .github/**, tools/**, tools/nx/**, .vscode/**, .githooks/**, .github/workflows/**
• generated **/src/gen/**

If you need behavior

• Model it in SDS/SEA™ (entities, flows, tags)
• Extend schemas if needed
• Update AST→IR→manifest mapping
• Update code generator templates

Anti-patterns

• Patching generated code
• Adding runtime “helpers” by hand
• Hiding logic in adapters instead of modeling it