fix(frontend): align legacy title, selector and grid contracts

Ref keeps the page title row at its default alignment and centres only the
heading, rules the yearbook selector row with 1px gray edges, and lets the log
panels overflow instead of clipping. The shared Lumen control family gets Ref's
middle baseline, and the general grid drops a bottom rule and clip that Ref does
not have.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

app/game-frontend/src/assets/styles/legacy-controls.css

@@ -61,6 +61,8 @@
     background: var(--legacy-button-bg);
     color: #fff;
     line-height: 21px;
+    /* Ref's framework baseline for these controls. */
+    vertical-align: middle;
 }
 
 .legacy-button.legacy-button--secondary {