Revision history for Data-Queue-Shared

0.03  2026-04-26
    - create: init under flock; mutex recovery wakes 1
    - queue str clear wakes all producers/consumers
    - eventfd consume returns accumulated count
    - harden DESTROY; factor MAKE OBJ macro
    - hoist SV construction out of pop multi/drain mutex
    - stat recoveries uint64 t; aarch64 CI matrix


0.02  2026-04-12
    - Add SEE ALSO cross-links to family modules


0.01  2026-04-05
    - Initial release
    - Int queue: lock-free Vyukov bounded MPMC
    - Str queue: futex-mutex with circular arena, deque ops (push_front, pop_back)
    - Backing: file-backed mmap, anonymous (MAP_ANONYMOUS), memfd
    - Blocking push/pop with timeout via futex
    - Batch ops under single mutex (push_multi, pop_multi, drain)
    - eventfd integration (opt-in notify)
    - PID-based stale lock recovery
    - peek, sync, stats with waiter counts