proxima-storage

Kernel-bypass storage as pipes: the prime-native NVMe queue-pair engine (nvme feature) over the sans-IO proxima-protocols::nvme codec, the sans-IO persistent-memory crash-consistency leaf — copy-on-write atomic root swap and the cache-line persist barriers (tier-3 no_std + no-alloc, unconditional, no PMDK linked), and the std DAX/file-backed mmap facade over it (dax feature, Linux-only fast tier).