feat(web): collapse resolved approval rows

Resolved permission boxes vanish from the transcript instead of
lingering as "answered" cards. When a turn has 2+ tools the resolved
approval is absorbed into the tool group as a compact italic line;
otherwise it is hidden entirely.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/structuredRender.test.ts

@@ -368,13 +368,14 @@ describe("buildTranscriptRow: approval", () => {
     expect(el.querySelector(".st-approval-path")!.textContent).toBe("/etc/x");
   });
 
-  it("hides the buttons and shows an answered note once resolved", () => {
+  it("renders a compact one-liner once resolved", () => {
     const el = buildTranscriptRow(approvalRow(allThreeOptions), {
       pending: false,
       onDecide: () => Promise.resolve(),
     });
     expect(el.querySelector(".st-approval-acts")).toBeNull();
-    expect(el.querySelector(".st-approval-resolved")!.textContent).toBe("answered");
+    expect(el.classList.contains("st-approval-compact")).toBe(true);
+    expect(el.textContent).toContain("approved");
   });
 
   it("invokes onDecide with the clicked decision and disables the buttons", () => {