ui(deploy): HistoryDisclosure with inline log expansion

Collapsible deployment history table (sorted newest-first) with
click-to-expand StartupLogPanel for any historical deployment row.

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

ui/src/pages/AppsTab/AppDeploymentPage/DeploymentTab/HistoryDisclosure.tsx

@@ -0,0 +1,64 @@
+import { useState } from 'react';
+import { DataTable } from '@cameleer/design-system';
+import type { Column } from '@cameleer/design-system';
+import type { Deployment, AppVersion } from '../../../../api/queries/admin/apps';
+import { timeAgo } from '../../../../utils/format-utils';
+import { StartupLogPanel } from '../../../../components/StartupLogPanel';
+import styles from '../AppDeploymentPage.module.css';
+
+interface Props {
+  deployments: Deployment[];
+  versions: AppVersion[];
+  appSlug: string;
+  envSlug: string;
+}
+
+export function HistoryDisclosure({ deployments, versions, appSlug, envSlug }: Props) {
+  const [open, setOpen] = useState(false);
+  const [expanded, setExpanded] = useState<string | null>(null);
+  const versionMap = new Map(versions.map((v) => [v.id, v]));
+
+  const rows = deployments
+    .slice()
+    .sort((a, b) => (b.createdAt ?? '').localeCompare(a.createdAt ?? ''));
+
+  const columns: Column<Deployment>[] = [
+    { key: 'createdAt', header: 'Started', render: (_, d) => timeAgo(d.createdAt) },
+    {
+      key: 'appVersionId', header: 'Version',
+      render: (_, d) => {
+        const v = versionMap.get(d.appVersionId);
+        return v ? `v${v.version}` : '?';
+      },
+    },
+    { key: 'status', header: 'Status' },
+    {
+      key: 'deployedAt', header: 'Duration',
+      render: (_, d) => d.deployedAt && d.createdAt
+        ? `${Math.round((Date.parse(d.deployedAt) - Date.parse(d.createdAt)) / 1000)}s`
+        : '—',
+    },
+  ];
+
+  return (
+    <div className={styles.historyRow}>
+      <button type="button" className={styles.disclosureToggle} onClick={() => setOpen(!open)}>
+        {open ? '▼' : '▶'} History ({rows.length})
+      </button>
+      {open && (
+        <>
+          <DataTable
+            columns={columns}
+            data={rows}
+            onRowClick={(row) => setExpanded(expanded === row.id ? null : row.id)}
+          />
+          {expanded && (() => {
+            const d = rows.find((r) => r.id === expanded);
+            if (!d) return null;
+            return <StartupLogPanel deployment={d} appSlug={appSlug} envSlug={envSlug} />;
+          })()}
+        </>
+      )}
+    </div>
+  );
+}