Scale LCD panel and pot SVG to 200%, shrink progress column

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DF16nV2ispNw1C9SbvqbRQ

web/style.css

@@ -116,7 +116,7 @@ header#connection-bar {
     display: grid;
     grid-template-columns: 9em 4em 4em;
     gap: 0.25em 0.5em;
-    font-size: 1.1em;
+    font-size: 2.2em;
 }
 .lcd-row    { display: contents; }
 .lcd-header { font-weight: bold; color: var(--text-muted); font-size: 0.85em; text-transform: uppercase; letter-spacing: 0.06em; }
@@ -163,7 +163,7 @@ header#connection-bar {
     flex-shrink: 0;
 }
 #pot-svg {
-    width: 288px;
+    width: 576px;
     height: auto;
     display: block;
 }