feat(sessions): add detail page, Notification component, and session API improvements

- add SessionDetailPage with breadcrumbs, DescriptionList, status badge, masked token
- add Notification component (info/success/error/warning/note variants) for contextual messages
- use Notification for 404 errors on session and environment detail pages
- add GET /sessions/:id endpoint; sanitize token (head…tail) and strip cookies/localStorage
- change DELETE /sessions/:id to return 204 No Content so client redirect works correctly
- add onRowClick prop to Table for clickable rows; stop propagation on actions column
- update status badges: open=success (green), closed=error (red) on both list and detail

client/src/ui/Table/Table.tsx

@@ -21,6 +21,8 @@ export interface TableProps<T> {
   pageSize?: number;
   /** Offer a page-size selector when pagination is enabled */
   pageSizeOptions?: number[];
+  /** Called when a row is clicked */
+  onRowClick?: (row: T) => void;
 }
 
 export function Table<T>({
@@ -32,6 +34,7 @@ export function Table<T>({
   className,
   pageSize: defaultPageSize,
   pageSizeOptions,
+  onRowClick,
 }: TableProps<T>) {
   const [page, setPage] = useState(1);
   const [pageSize, setPageSize] = useState(defaultPageSize ?? 0);
@@ -77,12 +80,17 @@ export function Table<T>({
             </tr>
           ) : (
             visibleData.map((row) => (
-              <tr key={rowKey(row)} className={styles.tr}>
+              <tr
+                key={rowKey(row)}
+                className={[styles.tr, onRowClick ? styles.clickable : ''].filter(Boolean).join(' ')}
+                onClick={onRowClick ? () => onRowClick(row) : undefined}
+              >
                 {columns.map((col) => (
                   <td
                     key={col.key}
                     className={styles.td}
                     style={{ textAlign: col.align ?? 'left' }}
+                    onClick={col.key === 'actions' ? (e) => e.stopPropagation() : undefined}
                   >
                     {col.render(row)}
                   </td>