iotta Opus voice codec — libopus (xiph/opus pinned by commit sha) plus the shared iotta make_opus_encoder/decoder factories. Optional: only needed by firmwares that enable the voice path (CONFIG_IOTTA_ENABLE_VOICE).
ESP Service is a three-layer service infrastructure providing a lifecycle base class, a dynamic service registry, and an optional MCP server for AI-agent tool invocation over multiple transports