Extensibility Model

A good extension point in bijux-proteomics-foundation makes future change cheaper without obscuring who still owns the result. A bad one turns the package into a generic hook system.

Extension Rules

• add a shared type only when multiple packages need the same durable meaning
• prefer versioned migrations over ad hoc fallback parsing
• keep extensions small enough that every downstream package can still review the change

First Proof Check

• the modules exposing extension points
• tests that prove extension behavior stays inside the package boundary
• neighboring handbooks if the extension changes a cross-package contract