fix(ui): keep workspace and rig context visible

src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css

@@ -1404,36 +1404,20 @@ small { color: var(--text-muted); }
   padding: 0.9rem 0.2rem 0;
 }
 .header-rig-switch {
-  display: flex;
+  display: grid;
+  grid-template-columns: minmax(0, 1fr);
   align-items: center;
   gap: 0.35rem;
-  position: relative;
 }
 .header-rig-summary {
-  position: absolute;
-  top: calc(100% + 0.3rem);
-  left: 0;
-  z-index: 20;
-  width: max-content;
-  max-width: min(28rem, calc(100vw - 2rem));
-  padding: 0.25rem 0.45rem;
-  border: 1px solid color-mix(in srgb, var(--border-light) 75%, transparent);
-  border-radius: var(--radius-sm);
-  background: color-mix(in srgb, var(--card-bg) 96%, transparent);
+  display: block;
+  max-width: 20rem;
   color: var(--text-muted);
-  box-shadow: 0 7px 20px color-mix(in srgb, #000 24%, transparent);
   font-size: var(--fs-xs);
   line-height: 1.35;
-  opacity: 0;
-  visibility: hidden;
-  pointer-events: none;
-  transition: opacity var(--dur-fast) var(--ease-out), visibility var(--dur-fast);
-}
-.header-rig-switch:hover .header-rig-summary,
-.header-rig-switch:focus-within .header-rig-summary,
-.header-rig-switch.is-switching .header-rig-summary {
-  opacity: 1;
-  visibility: visible;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
 }
 .header-rig-switch select {
   min-width: 8rem;
@@ -2964,9 +2948,10 @@ button.is-active {
 #ptt-btn.is-active { background: var(--accent-red) !important; border-color: var(--accent-red) !important; color: white !important; }
 .is-busy { cursor: progress !important; opacity: 0.68; }
 .operator-layout-picker {
-  display: inline-flex;
+  display: inline-grid;
+  grid-template-columns: auto auto;
   align-items: center;
-  height: 2rem;
+  min-height: 2rem;
   padding-left: 0.6rem;
   border: 1px solid var(--border-light);
   border-radius: var(--radius-md);
@@ -2977,7 +2962,6 @@ button.is-active {
   letter-spacing: 0.04em;
   text-transform: uppercase;
   overflow: visible;
-  position: relative;
 }
 .operator-layout-picker::before { content: "Layout"; }
 .operator-layout-picker select {
@@ -2996,34 +2980,15 @@ button.is-active {
 .operator-layout-picker:focus-within { border-color: var(--accent-green); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-green) 20%, transparent); }
 .operator-layout-picker select:focus-visible { outline: 0; }
 .operator-layout-description {
-  position: absolute;
-  top: calc(100% + 0.35rem);
-  left: 0;
-  z-index: 25;
-  width: max-content;
-  max-width: min(22rem, calc(100vw - 2rem));
-  padding: 0.35rem 0.55rem;
-  border: 1px solid var(--border-light);
-  border-radius: var(--radius-sm);
-  background: var(--card-bg);
+  grid-column: 1 / -1;
+  max-width: 22rem;
+  padding: 0 0.55rem 0.35rem 0;
   color: var(--text-muted);
-  box-shadow: 0 8px 24px color-mix(in srgb, #000 28%, transparent);
   font-size: var(--fs-xs);
   font-weight: 500;
   letter-spacing: 0;
   line-height: 1.35;
   text-transform: none;
-  opacity: 0;
-  transform: translateY(-0.2rem);
-  visibility: hidden;
-  pointer-events: none;
-  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), visibility var(--dur-fast);
-}
-.operator-layout-picker:hover .operator-layout-description,
-.operator-layout-picker:focus-within .operator-layout-description {
-  opacity: 1;
-  transform: none;
-  visibility: visible;
 }
 .advanced-radio-controls {
   margin-top: var(--space-3);