fix(virtual_table): Commit pending changes on tab_out

When user tabs out of the table with pending changes in RowEditBuffer,
commit them before exiting. Prevents data loss when leaving ghost row.

src/widgets/virtual_advanced_table/virtual_advanced_table.zig

@@ -1139,11 +1139,30 @@ fn handleKeyboard(
     }
 
     // =========================================================================
-    // Tab navigation
+    // Tab navigation (con commit de cambios pendientes)
     // =========================================================================
     if (events.tab_out) {
         // Solo si CellEditor no procesó Tab (evita doble procesamiento)
         if (result.navigate_direction == .none) {
+            // IMPORTANTE: Commit cambios pendientes antes de salir de la tabla
+            if (list_state.row_edit_buffer.has_changes) {
+                const current_row_id = list_state.row_edit_buffer.row_id;
+                const is_ghost = table_core.isGhostRow(current_row_id);
+
+                // Forzar commit de la fila actual (pasamos NEW_ROW_ID para forzar diferencia)
+                if (table_core.checkRowChangeAndCommit(
+                    &list_state.row_edit_buffer,
+                    table_core.NEW_ROW_ID - 1, // ID diferente para forzar commit
+                    0,
+                    false,
+                    &result.row_changes,
+                )) |commit_info| {
+                    result.row_committed = true;
+                    result.row_commit_id = current_row_id;
+                    result.row_commit_is_insert = is_ghost;
+                    result.row_changes_count = commit_info.change_count;
+                }
+            }
             result.tab_out = true;
             result.tab_shift = events.tab_shift;
         }