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Local failure model

Local calls use three channels:
Do not catch a dirty file as if the engine disappeared.

Remote hierarchy

REMOTE ERROR TREE ยท PREVIEW
Catch from specific to general:

Diagnostics belong to the owning layer

  • Language findings link to the error register.
  • Engine exits keep the machine surface contract.
  • Remote API errors carry status, response body and optional request id.
  • Product errors should wrap these facts, not replace them.

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Type index

Scan every exported result and error type.

Security boundary

Refuse before execution where possible.