What Happens If Things Go Wrong?

Crashes

• Incomplete runs are marked invalid and excluded from replay and compare.
• Artifacts written partially are refused on load.

Partial writes

• Atomic write strategy prevents partial state from being treated as valid.
• If partial state is detected, execution refuses and explains why.

Backend outages

• Requests fail fast with structured error payloads.
• Circuit breakers stop repeated failures from cascading.

ND failures

• ND refuses when bounds cannot be met.
• Witness failures are recorded in provenance.