--- canonical/proof_pilot.tex
+++ derived/proof_pilot.tex
@@ -10,6 +10,8 @@
 \title{Evolutionary CM/LM Proof Pilot\\Compatibility, Closure, and Sharp Robustness Bounds}
 \author{Research working note prepared for Brian}
 \date{4 November 2026}
+% Reading-copy typography only: flexible line breaking for prior-art URLs.
+\setlength{\emergencystretch}{2em}
 \begin{document}
 \maketitle
 \begin{abstract}