refactor(ui): checkpoints in-grid styles + drop retired row-list/history CSS

ui/src/pages/AppsTab/AppDeploymentPage/AppDeploymentPage.module.css

@@ -73,42 +73,6 @@
   border: 0;
 }
 
-.checkpointsRow {
-  margin-top: 8px;
-}
-
-.disclosureToggle {
-  background: none;
-  border: none;
-  color: var(--text-muted);
-  cursor: pointer;
-  font-size: 13px;
-  padding: 4px 0;
-}
-
-.checkpointList {
-  display: flex;
-  flex-direction: column;
-  gap: 4px;
-  padding: 6px 0 0 12px;
-}
-
-.checkpointRow {
-  display: flex;
-  align-items: center;
-  gap: 10px;
-  font-size: 13px;
-}
-
-.checkpointMeta {
-  color: var(--text-muted);
-}
-
-.checkpointArchived {
-  color: var(--warning);
-  font-size: 12px;
-}
-
 .checkpointsTable tr.checkpointArchived {
   opacity: 0.55;
 }
@@ -281,9 +245,6 @@
 }
 .logFill { flex: 1 1 auto; min-height: 200px; }
 
-/* HistoryDisclosure */
-.historyRow { margin-top: 16px; }
-
 /* Environment pill (Identity section) */
 .envPill {
   display: inline-block;
@@ -401,38 +362,37 @@
   z-index: 1;
 }
 
-/* Collapsible Checkpoints header */
-.checkpointsSection {
+/* Checkpoints row — lives inside .configGrid */
+.checkpointsTriggerCell {
   display: flex;
-  flex-direction: column;
+  align-items: center;
 }
 
-.checkpointsHeader {
+.checkpointsTrigger {
   display: inline-flex;
   align-items: center;
   gap: 6px;
   background: none;
   border: none;
-  padding: 8px 0;
-  font-size: 13px;
-  font-weight: 600;
+  padding: 0;
   color: var(--text-primary);
   cursor: pointer;
+  font: inherit;
   text-align: left;
 }
 
-.checkpointsHeader:hover {
+.checkpointsTrigger:hover {
   color: var(--amber);
 }
 
+.checkpointsTableFullRow {
+  grid-column: 1 / -1;
+  margin-top: 4px;
+}
+
 .checkpointsChevron {
   color: var(--text-muted);
   font-size: 11px;
   width: 12px;
   text-align: center;
 }
-
-.checkpointsCount {
-  color: var(--text-muted);
-  font-weight: 400;
-}