revert: restore CSS to working state before logo column experiments

app/static/style.css

@@ -42,17 +42,15 @@ body {
   width: auto;
 }
 .page-logo-wrap {
-  grid-area: logo;
-  padding: 1.2rem 0 0 1.5rem;
-  align-self: start;
-  position: sticky;
+  position: fixed;
+  left: 1.5rem;
   top: 4.5rem;
+  z-index: 90;
 }
 .page-logo {
   height: clamp(2.5rem, 5vw, 3.5rem);
   width: auto;
   opacity: 0.9;
-  display: block;
 }
 .panel {
   background: var(--card);
@@ -772,22 +770,6 @@ button {
   transform: none !important;
 }
 
-/* Dashboard grid layout */
-.dashboard-page {
-  display: grid;
-  grid-template-columns: 130px 1fr;
-  grid-template-rows: auto 1fr;
-  grid-template-areas:
-    header header
-    logo main
-    . footer;
-  min-height: 100vh;
-}
-.dashboard-page .header   { grid-area: header; }
-.dashboard-page .page-logo-wrap { grid-area: logo; }
-.dashboard-page .admin-layout   { grid-area: main; margin: 0; max-width: 100%; }
-.dashboard-page .made-by-wrap   { grid-area: footer; }
-
 /* Richer background */
 .dashboard-page {
   background: