Adopts the fuzzing pattern proven in alkcall/alktty/alktunnels/ alksocks: fuzz/ workspace with stable-toolchain shared invariant crate, committed seed corpora, corpus replay as the standing gate, detached runner for campaigns. Four targets planned — sse_parser and ws_chunk_framing (this session), spec_import and the stateful wave (later sessions). §3 table and §6 sequencing track progress.