fix(web): review-bot round one + regenerate doc catalogs

- rename same-title no-op moves inside the serialized creation chain
- insertSessionBefore maps only the typed WorkspaceMoveInvalidError to
  workspace-move-invalid; storage failures stay internal
- workspace upsert rejects snapshots older than the installed projection
- flat-mode empty state shows when the query hides the intent row
- intent row no longer forces group expansion; header twist stays live
- group-by menu rides a portal; menu clicks stop propagating to the row
- intent row uses the same single-slot indent in both list modes
- regenerate cordis api/catalog + doc graphs

packages/client/ui-workspace/src/client/WorkspaceBrowser.tsx

@@ -209,7 +209,7 @@ function FlatList({ useSessions, open, query }: Pick<SessionTreeProps, 'useSessi
         {rows.length === 0 && !intentRow && (
           <div className={css.empty}>{query === '' ? 'No sessions yet' : 'No matches'}</div>
         )}
-        {intentRow && <IntentRowItem flat />}
+        {intentRow && <IntentRowItem />}
         {rows.map(node => (
           <SessionNodeItem
             key={node.id}

packages/client/ui-workspace/src/client/rows/Rows.tsx

@@ -108,14 +108,13 @@ export function ProjectRowItem({ group, onToggle, onCreate, onRename }: {
 /**
  * The selected "New session" row for a frontend Session Intent targeted to a
  * real Workspace. The row disappears when the Intent is replaced or connects.
- * @param props.flat - flat-list variant: no twist slot (figma flat cell), so
- * only the status slot indents the title.
+ * One status-slot indent in both grouped and flat lists (session rows carry
+ * no twist slot either, so titles align).
  * @returns the placeholder row element.
  */
-export function IntentRowItem({ flat = false }: { flat?: boolean } = {}) {
+export function IntentRowItem() {
   return (
     <div className={clsx(css.sessionRow, css.selected)} role="treeitem" aria-selected style={{ paddingLeft: 8 }}>
-      {!flat && <span className={css.slot} />}
       <span className={css.slot} />
       <span className={css.title}>New session</span>
     </div>