Status: OUT
The codebase's deterministic test infrastructure validates exactly the properties that structural construction already guarantees (immutability, synchronized structures, state ratchets), while the performance strategy (write-time caching, stdlib-only hermetic modules) ensures these constructions remain testable — creating a closed loop where correctness, testability, and performance are mutually reinforcing but collectively unable to reach temporal properties outside the loop.
Construction guarantees what tests validate, tests validate what construction guarantees, and performance choices keep the loop hermetic — but nothing inside can reach temporal gaps
Depends on (SL): tested-properties-are-already-safe-by-construction, quality-and-performance-strategies-are-aligned