loudink-v1.5 1.5.1: honesty-safe writing FP + structure/SQL paths + gate; justify release vs v1.1

loudink-v1.5 1.5.0: slim unified-only package (no promoted_core); honest size 835MiB

loudink-v1.5 1.5.0: beats v1.1 on writing latency + IR honesty neural

initial commit