A new way to manage memory: no garbage collection, extremely fast & safe access

The design replaces tracing garbage collection with a DAG ownership model and owner-scoped slab chains: parents hold strong references to children, back-references are annotated +R(parent) and treated as weak, and a static linter rejects cycles without a parent edge. Deallocation is subtree-scoped so cost is proportional to owned allocation, not total heap size. Each owner allocates into a chain of power-of-two slabs (bump-pointer within a slab; new slab doubles size), so n bytes occupy at most ⌈log₂(n/initial)⌉ slabs and deallocation is O(log n) in worst case but effectively constant for typical scopes. Dynamic values use 8-byte NaN-boxed tagged representations so integers, pointers, booleans, None and tombstones fit a single word. Lists use stable power-of-two slabs that never relocate existing entries, giving O(1) random access via bit operations.

Map access treats index → (key,value) as authoritative and avoids unnecessary reverse lookup: iterator provenance, compiler-constant keys (symbols), and shared insertion shapes provide cached stable indices. Deletions write tombstones; reinsertion semantics (append-on-reinsert vs revive) are a language policy. Stable indices belong to storage generations and are invalidated only when the index→entry mapping changes; resolver compaction reorganizes reverse-index metadata without renumbering storage. Residual dynamic lookup is handled by a two-stage pipeline - deterministic key hashing → per-Map resolver → candidate stable indices → exact equals check - with resolvers evolving from SIMD scans to SwissTable or ART, assisted by bloom/negative-membership filters and generational strategies to avoid moving historical data.