Function max_entities_per_memory 

pub fn max_entities_per_memory() -> usize

Resolves the per-memory entity cap (flag/XDG/runtime_config).

v1.0.43: makes the cap (default 50) configurable without product env. Stress tests showed inputs with 33-46 candidates being truncated at the old cap of 30. Values outside [1, 1000] fall back to the default.