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0291318c95
send and channel_send took a JSON string the Nim side parsed with
parseJson — JSON as the argument-passing mechanism, which defeats the
point of the CBOR ABI. They now take typed {.ffi.} request objects
(SendRequest, ChannelSendRequest) that ride the wire as CBOR, so the
arguments are structured on both sides with no JSON parsing.
payload is a base64 string rather than seq[byte]: nim-ffi's Rust codegen
maps seq[byte] to Vec<u8> without the serde_bytes annotation a CBOR byte
string needs, so native bytes do not round-trip (ciborium emits an array,
the Nim decoder wants a byte string). A base64 string value inside the
CBOR struct is the documented fallback until that codegen gap is fixed
upstream. create_node keeps its JSON string param — there the JSON is the
value, not an argument encoding.
Fields are unexported to keep the export marker out of the generated
bindings, and the reading proc lives in the same module.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>