ui(deploy): port missing agent-config fields, var-view switcher, env pill, tab seam

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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

@@ -6,6 +6,25 @@
   min-height: 100%;
 }
 
+/* Tabs + content grouped together with no internal gap */
+.tabGroup {
+  display: flex;
+  flex-direction: column;
+  flex: 1 1 auto;
+  min-height: 0;
+}
+
+/* The tab-content card sits flush against the Tabs strip — no gap */
+.tabContent {
+  border: 1px solid var(--border);
+  border-top: none;
+  border-radius: 0 0 6px 6px;
+  padding: 16px;
+  background: var(--bg-surface);
+  flex: 1 1 auto;
+  min-height: 0;
+}
+
 .section {
   border: 1px solid var(--border);
   border-radius: 6px;
@@ -246,6 +265,17 @@
 /* HistoryDisclosure */
 .historyRow { margin-top: 16px; }
 
+/* Environment pill (Identity section) */
+.envPill {
+  display: inline-block;
+  padding: 2px 10px;
+  border-radius: 10px;
+  font-size: 12px;
+  font-weight: 500;
+  color: var(--text-inverse, white);
+  width: max-content;
+}
+
 /* Env vars list */
 .envVarsList {
   display: flex;