EVIDENCE - PaperBack MinGW rebuild (2026-09-29, SCANNER01)

KDF test (derive_key; pwd="paperbak-test", salt=00..0f, iter=524288, dklen=24):
  C build : 606ccf84b56bbbf1e1c6e1af78746d665782a37605a96854
  Python  : 606ccf84b56bbbf1e1c6e1af78746d665782a37605a96854  (hashlib.pbkdf2_hmac sha1)  -> MATCH

AES-192-CBC KAT (key=00..17, iv=bytes(i*16), pt=bytes(0..31), 32 bytes):
  C build : dda97ca4864cdfe06eaf70a0ec0d719131abeb8b5fcbb4d757812603b01188cc  (roundtrip decrypt OK)
  Python  : dda97ca4864cdfe06eaf70a0ec0d719131abeb8b5fcbb4d757812603b01188cc  (PyCryptodome CBC)  -> MATCH

Struct parity: sizeof(aes_encrypt_ctx)=244 == sizeof(aes_decrypt_ctx)=244 under both header sets; KS_LENGTH=60.
Launch test: PaperBak.exe starts; main window title "[PaperBack]".