synthetic-undocumented-type expectations (manually calculated, synthetic)
messages[1] has type=“info”, an existing but undocumented message type. Reject the whole file with undocumented_message_type; do not guess its format.
Expectations
- files[0].status=“pending”; no imported events. Clear events from messages visited before rejection, and do not advance the cursor.
- One diagnostic, code=undocumented_message_type.