v2.0.0

Added

• Added an explicitly selected C# lock-free key-value profile using mapped
  layout 2.0 and resource protocol 2, with direct reservation publication,
  shared zero-copy leases, generation-fenced removal/reuse, participant
  incarnations, explicit recovery, and bounded diagnostics.
• Added StoreProfile, CreateLockFree, profile-aware sizing,
  ParticipantRecordCount, immutable StoreProtocolInfo, and the appended
  ParticipantTableFull open status.

Changed

• NuGet SharedMemoryStore advances to 2.0.0. Lock-free wait options bound
  local retry, revalidation, helping, and backoff; they do not acquire a named
  operation lock or wait for keys/capacity to appear.
• Documented reservation tokens as exclusive single-producer lifetimes and
  clarified logical removal, RemovePending, borrowed-view, recovery, and
  local-handle disposal semantics.

Compatibility

• The legacy profile remains the default and preserves layout 1.2, resource
  protocol 1, public workflow signatures, and existing status numbers.
• Layout 1.2 and 2.0 are never reinterpreted in place or used by mixed
  synchronization participants. Same-name upgrade and rollback require draining
  handles, recreating the mapping, and republishing application-owned values.
• C++ and Python 0.1.0 remain layout-1.2-only and reject layout 2.0; their
  independently versioned packages and C ABI 1.0 are unchanged.