Polish populated workbench states

frontend/src/styles/app.css

@@ -679,7 +679,7 @@ section li strong + div {
 }
 
 .workspace-grid-data {
-  grid-template-columns: minmax(16rem, 0.75fr) minmax(18rem, 0.95fr) minmax(22rem, 1.35fr);
+  grid-template-columns: repeat(2, minmax(0, 1fr));
 }
 
 .workspace-grid-analysis,
@@ -701,6 +701,10 @@ section li strong + div {
   overflow: visible;
 }
 
+.workspace-grid-data > section:nth-child(3) {
+  grid-column: 1 / -1;
+}
+
 .workspace-grid-ai > section {
   align-self: stretch;
 }
@@ -943,6 +947,16 @@ button.entity-card {
   margin-top: 0.7rem;
 }
 
+.dataset-card .button-row {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
+}
+
+.dataset-card .button-row button {
+  width: 100%;
+  margin-top: 0;
+}
+
 .button-row {
   display: flex;
   flex-wrap: wrap;
@@ -1068,6 +1082,29 @@ button.entity-card {
   background: var(--accent-soft);
 }
 
+.list-limit-banner {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto;
+  gap: 0.7rem;
+  align-items: center;
+  margin-top: 0.8rem;
+  border: 1px solid var(--line);
+  border-radius: 8px;
+  padding: 0.62rem 0.72rem;
+  background: #ffffff;
+}
+
+.list-limit-banner span {
+  color: var(--muted);
+  font-size: 0.86rem;
+  line-height: 1.35;
+}
+
+.list-limit-banner button {
+  width: auto;
+  min-height: 2.15rem;
+}
+
 .export-list {
   margin-top: 0.8rem;
 }
@@ -1311,7 +1348,8 @@ button.entity-card {
   .quality-summary-grid,
   .quality-score-row,
   .export-action-grid,
-  .inspector-action-bar {
+  .inspector-action-bar,
+  .list-limit-banner {
     grid-template-columns: 1fr;
   }