Per the reap-use mandate: 'identical file + different instruction' is a
DIFFERENT operation. bindOperationToUploadIdentity() folds instruction,
field contract, model, data class and export format into the DOC0-compatible
upload filename so the durable fingerprint covers every result-affecting
input. The bytes' SHA-256 stays stable; DOC0 still receives the caller's
x-idempotency-key (its own idempotency, its own contract).
Classification: STANDARDIZE/0pt-owned (upstream DOC0 untouched).
admin