feat(ui): align admin project detail with enterprise system

frontend/src/styles/unified-page.css

@@ -203,6 +203,15 @@
   font-size: 34px;
 }
 
+.setup-page .setup-header.unified-action-bar {
+  padding: var(--unified-shell-padding-y) var(--unified-shell-padding-x);
+  border-bottom: 1px solid var(--unified-shell-divider);
+}
+
+.setup-page .setup-content.unified-section {
+  padding: 0;
+}
+
 @media (max-width: 960px) {
   .unified-action-bar,
   .unified-section {

frontend/src/views/admin/ProjectDetail.vue

@@ -1,7 +1,7 @@
 <template>
-  <div class="ctms-page setup-page">
+  <div class="ctms-page setup-page ctms-page-shell">
     <div class="setup-shell unified-shell">
-      <div class="setup-header">
+      <div class="setup-header unified-action-bar">
       <div class="setup-flow">
         <div
           v-for="(step, index) in steps"
@@ -108,7 +108,7 @@
         @click="closeEditDrawer"
       />
       <div
-        class="setup-content"
+        class="setup-content unified-section"
         :class="{
           'setup-content-drawer': drawerVisible,
           'is-closing': drawerClosing,