fix(web): show "No results." in virtualized empty tables

apps/web/src/components/data-table.tsx

@@ -267,7 +267,7 @@ export function DataTable<TData extends RowData>({
             ))}
           </TableHeader>
           <TableBody>
-            {enableVirtualization && virtualRows ? (
+            {enableVirtualization && virtualRows && rows.length ? (
               <>
                 {/* Top spacer */}
                 {virtualRows.length > 0 && virtualRows[0].start > 0 && (

tests/fixtures/lead_selection_server.ts

@@ -12,15 +12,16 @@ const selection=rows=>window.selected=rows.map(row=>row.id);
 const columns=[{accessorKey:'email',header:'Email'}];
 function Probe(){const [rows,setRows]=useState(initial);window.refresh=()=>flushSync(()=>setRows([...initial]));window.replace=()=>flushSync(()=>setRows([second,third]));return <DataTable columns={columns} data={rows} enableSelection enableVirtualization={false} onSelectionChange={selection}/>;}
 const root=createRoot(document.getElementById('root'));root.render(<Probe/>);
-window.unmount=()=>root.unmount();
+const emptyRoot=createRoot(document.getElementById('virtual-empty'));emptyRoot.render(<DataTable columns={columns} data={[]}/>);
+window.unmount=()=>{root.unmount();emptyRoot.unmount();};
 `);
 let result;
 try {result=await Bun.build({entrypoints:[entry],target:'browser'});} finally {await Bun.file(entry).delete();}
 if(!result.success)throw new Error(String(result.logs));
 const bundle=await result.outputs[0].text();
 const server=Bun.serve({hostname:'127.0.0.1',port:0,fetch(req){
  if(new URL(req.url).pathname==='/bundle.js')return new Response(bundle,{headers:{'Content-Type':'application/javascript'}});
- return new Response('<style>[role=checkbox]{display:inline-block;width:20px;height:20px;border:1px solid black}</style><div id="root"></div><script type="module" src="/bundle.js"></script>',{headers:{'Content-Type':'text/html'}});
+ return new Response('<style>[role=checkbox]{display:inline-block;width:20px;height:20px;border:1px solid black}</style><div id="root"></div><div id="virtual-empty"></div><script type="module" src="/bundle.js"></script>',{headers:{'Content-Type':'text/html'}});
 }});
 console.log(JSON.stringify({port:server.port}));
 process.on('SIGTERM',()=>{server.stop(true);process.exit(0);});

tests/test_lead_selection_browser.py

@@ -41,6 +41,8 @@ def test_lead_table_clears_selection_when_backing_records_change():
                 snapshot={'selected_ids':page.evaluate('selected'),'first_visible_lead':'second@example.test','checked':page.get_by_role('checkbox',name='Select row').first.is_checked(),'unchanged_rows_preserve_selection':unchanged,'errors':errors}
                 print(json.dumps(snapshot,indent=2))
                 assert snapshot['selected_ids']==[] and not snapshot['checked'] and unchanged and not errors
+                # Virtualized (default) table with no rows still renders its empty state.
+                page.locator('#virtual-empty').get_by_text('No results.',exact=True).wait_for(timeout=5000)
                 page.evaluate('unmount()')
             finally:browser.close()
     finally: