fix: extend transcript hover surfaces

web/src/structuredRender.test.ts

@@ -23,6 +23,7 @@ describe("buildTranscriptRow: user/agent/thought", () => {
     );
     expect(el.className).toContain("st-row-user");
     expect(el.textContent).toContain("hi <b>there</b>");
+    expect(el.querySelector(".st-who")).toBeNull();
     // never actual markup from user input
     expect(el.querySelector("b")).toBeNull();
   });
@@ -61,12 +62,11 @@ describe("buildTranscriptRow: user/agent/thought", () => {
     const el = buildTranscriptRow(
       row("agent_text", { content: { type: "text", text: "copy **this** exactly" } }),
     );
-    const body = el.querySelector<HTMLElement>(".st-body")!;
-    expect(body.getAttribute("role")).toBe("button");
-    body.click();
+    expect(el.getAttribute("role")).toBe("button");
+    el.click();
     await Promise.resolve();
     expect(writeText).toHaveBeenCalledWith("copy **this** exactly");
-    body.dispatchEvent(new KeyboardEvent("keydown", { key: "Enter", bubbles: true }));
+    el.dispatchEvent(new KeyboardEvent("keydown", { key: "Enter", bubbles: true }));
     await Promise.resolve();
     expect(writeText).toHaveBeenCalledTimes(2);
   });