Brighten footer copyright and Made-with text to match social icons

Target the correct Material classes (.md-copyright, .md-copyright__highlight, .md-footer-meta a) with --one-fg so copyright, highlight, and the Material-for-MkDocs link read at full contrast.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ORB-8888

docs/stylesheets/extra.css

@@ -756,12 +756,18 @@ body {
   border-top: 1px solid var(--one-border-strong);
 }
 
-.md-footer-meta .md-footer-copyright,
-.md-footer-meta .md-footer-copyright__highlight {
+.md-footer-meta .md-copyright,
+.md-footer-meta .md-copyright__highlight,
+.md-footer-meta.md-typeset a {
   color: var(--one-fg);
   opacity: 1;
 }
 
+.md-footer-meta.md-typeset a:hover,
+.md-footer-meta.md-typeset a:focus {
+  color: var(--one-accent);
+}
+
 .md-footer__link {
   background-color: var(--one-bg);
   border: 1px solid var(--one-border);