fix(ui): remove decorative outlines and restore lab spacing

apps/control-station/src/styles/system-telemetry.css

@@ -55,7 +55,6 @@
 .compute-contour-settings__install code {
   overflow: auto;
   padding: 0.8rem;
-  border: 1px solid var(--station-hairline);
   border-radius: var(--nodedc-radius-control);
   background: var(--station-panel-deep);
   color: var(--nodedc-text-secondary);
@@ -132,7 +131,6 @@
 .system-telemetry-series,
 .network-stat-card {
   min-width: 0;
-  border: 1px solid var(--station-hairline);
   border-radius: var(--nodedc-radius-card);
   background: var(--station-panel-soft);
 }
@@ -213,8 +211,8 @@
 
 .worker-hardware__facts dl {
   grid-template-columns: repeat(2, minmax(0, 1fr));
-  border: 1px solid var(--station-hairline);
   border-radius: var(--nodedc-radius-control);
+  background: var(--station-panel-soft);
 }
 
 .worker-hardware__facts dl > div,
@@ -383,13 +381,11 @@
   gap: 0.75rem;
   padding: 0.72rem 0.8rem;
   isolation: isolate;
-  border: 1px solid var(--station-hairline);
   border-radius: var(--nodedc-radius-control);
   background: var(--station-panel-soft);
 }
 
 .worker-stage-list li[data-state="active"] {
-  border-color: var(--station-hairline-strong);
   background: var(--nodedc-focus-surface);
 }
 
@@ -498,7 +494,6 @@
   min-width: 0;
   gap: 0.3rem;
   padding: 0.78rem;
-  border: 1px solid var(--station-hairline);
   border-radius: var(--nodedc-radius-control);
   background: var(--station-panel-soft);
 }