New Arena Range#855

Draft

mjp41 wants to merge 31 commits into

mainfrom

BackendArenaRange

Commits on May 15, 2026

Base idea

mjp41
and
Copilot
committed

Commits on May 20, 2026

Add BackendArenaBins<B>: bin scheme, per-sc tables, and bitmap

mjp41
and
Copilot
committed
Add RBTree::neighbours probe helper (Phase 2)

mjp41
and
Copilot
committed

Commits on May 21, 2026

Add BackendArena: dual-tree free-range manager with consolidation

mjp41
and
Copilot
committed
Add multi-instance BackendArena tests with shared pagemap

mjp41
and
Copilot
committed

Commits on May 22, 2026

Commits on May 23, 2026

Commits on May 25, 2026

Commits on Jun 3, 2026

Phase 14: per-chunk pagemap offset encoding

mjp41
and
Copilot
committed

Commits on Jun 4, 2026

Commits on Jun 8, 2026

Add non-pow2 metadata sub-allocator: InplaceRep + SmallArenaRange

mjp41
and
Copilot
committed

Commits on Jun 9, 2026

Commits on Jun 10, 2026