fix: Sentinel SSE URL — /SenSu/plugin/... → /plugin/... (匹配实际路由)

plugins/sentinel/dashboard.html

@@ -118,7 +118,7 @@
 
     function connectSSE() {
       if (sseConn) { sseConn.close(); sseConn = null; }
-      sseConn = new EventSource("/SenSu/plugin/sentinel/sse");
+      sseConn = new EventSource("/plugin/sentinel/sse");
       sseConn.addEventListener("nodes_update", function(e){
         var d = JSON.parse(e.data);
         if (d.nodes) renderNodes(d.nodes);