feat: add provider-native request switches (#5254)

webui/src/tests/agent-activity-cluster.test.tsx

@@ -1165,12 +1165,13 @@ describe("AgentActivityCluster", () => {
             id: "search-start",
             role: "tool",
             kind: "trace",
-            content: line,
-            traces: [line],
+            content: "web_search()",
+            traces: ["web_search()"],
             toolEvents: [{
               phase: "start",
+              call_id: "hosted-search-1",
               name: "web_search",
-              arguments: { query: "site:linkedin.com/company Evomap startup" },
+              arguments: {},
             }],
             createdAt: 1,
           },
@@ -1182,6 +1183,7 @@ describe("AgentActivityCluster", () => {
             traces: [line],
             toolEvents: [{
               phase: "error",
+              call_id: "hosted-search-1",
               name: "web_search",
               arguments: { query: "site:linkedin.com/company Evomap startup" },
               error: "Search provider rate limited the request",