Captures the current state of the D→P RDMA snapshot push work for
the next agent (or future me): which commits land which phase, which
phases are verified vs in-flight, and the known unverified surfaces
(byte-level KV layout, cross-node, multi-D contention, token_id
consistency, D-side evict races, chunked-prefill interactions).
Also maps the §2 design points to their implementation locations so
the doc-to-code traceability is explicit.