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Extensibility Model

Extensibility only helps when it preserves the core package argument. In bijux-canon-runtime, extension points should widen acceptance, persistence, replay, and governed execution 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_runtime/application/execute_flow.py, model/, and observability/ for the structural ownership boundary
  • tests for acceptance, replay, and persistence evidence for executable confirmation that the structure still holds

Bottom Line

If bijux-canon-runtime needs hidden structure to defend acceptance, persistence, replay, and governed execution, the architecture is already too opaque.