Extensibility Model

Extensibility only helps when it preserves the core package argument. In bijux-canon-ingest, extension points should widen source preparation before retrieval begins intentionally rather than invite neighboring concerns in through convenience hooks.

What To Check

• name the extension points that are safe because they preserve the package role
• name the boundaries that extensions must not cross
• prefer extension seams that keep review pressure visible in code and tests

First Proof Check

• src/bijux_canon_ingest/processing, retrieval, and application for the structural ownership boundary
• tests for deterministic preparation evidence for executable confirmation that the structure still holds

Bottom Line

If bijux-canon-ingest needs hidden structure to defend source preparation before retrieval begins, the architecture is already too opaque.