Status: IN
The codebase achieves correctness through two complementary mechanisms: spatial reuse (repurposing existing structures like heaps, topics, and lists with structural constraints) and temporal ratchets (monotonic cursors, irreversible finalization that prevent state regression) — together covering both structure-domain and time-domain consistency without purpose-built validation.
Structural reuse constrains existing abstractions (depth-3); construction-not-validation uses ratchets and immutability (depth-3) — combining reveals spatial and temporal correctness are unified
Depends on (SL): correctness-through-structural-reuse, correctness-by-construction-not-validation