Fix code analysis warnings

web/backend/.config/dotnet-tools.json

@@ -8,6 +8,13 @@
         "csharpier"
       ],
       "rollForward": false
+    },
+    "jetbrains.resharper.globaltools": {
+      "version": "2026.2.1",
+      "commands": [
+        "jb"
+      ],
+      "rollForward": false
     }
   }
 }