070901f2dd
Multi-output CARROT transactions store per-output D_e in additional_pubkeys (tag 0x04) with no tx_pubkey (tag 0x01), so the single-D_e pre-computation path was skipped entirely — every output hit the full _scanCarrotOutput path (~40ms each via FFI). Added per-output X25519 + 3-byte view tag rejection that restores post-fork sync from ~10 blk/s back to ~900+ blk/s. Also fixed parseExtra to handle 0xDE (minergate tag) and gracefully skip unknown tags via varint-length instead of aborting all remaining extra bytes.