CTraderCodec implements tokio_util Decoder+Encoder with 4-byte BE length
prefix framing. Handles partial frames, multiple frames in buffer, and
rejects oversized frames (16 MiB max). 5 unit tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Downloads 4 proto files from spotware/openapi-proto-messages (MIT license),
compiles with prost-build, and adds payload-type constants + dispatch helpers.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New workspace crate for cTrader Open API client (Protobuf over TCP+TLS).
Includes CTraderConfig, CTraderEnvironment, CTraderError, and RateLimitBucket types.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
