Revert "Merge branch 'revert-d8af6c8f' into 'master'"

This reverts merge request !158

frontend-web/src/core/plugin-management/domain-agent.test.mjs

@@ -166,3 +166,25 @@ test("mapped domain overrides the user's manual selection for that incoming mess
     },
   );
 });
+
+test("unmapped incoming url resets auto-selected agent back to default when there is no manual selection", () => {
+  assert.deepEqual(
+    resolveIncomingIframeSelection({
+      pageUrl: "https://another-unknown.example.com/article",
+      mappings: [
+        {
+          id: "m1",
+          domain: "foo.example.com",
+          agentId: "agent-1",
+          enabled: true,
+        },
+      ],
+      availableAgentIds: ["agent-1", "agent-2"],
+      manualSelectedAgentId: null,
+    }),
+    {
+      selectedAgentId: null,
+      forceDefaultAssistant: true,
+    },
+  );
+});