+Code sharing between client and server
+--------------------------------------
+[ ] Eliminate duplication of loa-board.js (currently copied into both
+ lmno.games and lmno-server). Games with shared logic need a single
+ canonical copy usable by both Node require() and browser <script>.
+ Options: (a) have Express serve static files in production too
+ (replacing the Apache static / Express dynamic split), so shared
+ files can live in lmno-server and be both required and served;
+ (b) symlinks from lmno.games into lmno-server (simple but
+ assumes sibling repo layout).
+