Change sx logo to (<x>)

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

sx/sxc/sx_components.py

@@ -125,7 +125,7 @@ async def _sx_header_sx(nav: str | None = None, *, child: str | None = None) ->
     return await render_to_sx("menu-row-sx",
         id="sx-row", level=1, colour="violet",
         link_href="/", link_label="sx",
-        link_label_content=SxExpr('(span :class "font-mono" "(</>) sx")'),
+        link_label_content=SxExpr('(span :class "font-mono" "(<x>)")'),
         nav=SxExpr(nav) if nav else None,
         child_id="sx-header-child",
         child=SxExpr(child) if child else None,