fix(rectification): keep a live analyzing step and drop the range-stop exits

A completed tool left only checkmarks under 正在分析, so the run looked stuck. The composer and scoring-card 先这样 buttons were unused early exits.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/tests/chat-stream-settle-contract.test.ts

@@ -4,7 +4,7 @@ import test from "node:test";
 import { createElement } from "react";
 import { renderToString } from "react-dom/server";
 
-import { ConsultationRunTimeline, timelineSummaryLabel } from "../src/components/consultation-run-timeline.tsx";
+import { ConsultationRunTimeline, timelineSummaryLabel, visibleTimelineRows } from "../src/components/consultation-run-timeline.tsx";
 import { latestAssistantView, type ChatMessage } from "../src/lib/chat-message-view.ts";
 
 const read = (path: string) => readFileSync(new URL(`../${path}`, import.meta.url), "utf8");
@@ -69,6 +69,17 @@ test("the timeline collapses in place with a 180ms height transition and honours
   assert.match(live, /aria-expanded="true"/);
   assert.match(live, /正在处理…/);
   assert.match(live, /inline-spinner/);
+  const liveAfterTool = renderToString(createElement(ConsultationRunTimeline, {
+    rows: [{ id: "read", kind: "calculate", status: "done", label: "读取校正记录" }],
+    live: true,
+  }));
+  assert.match(liveAfterTool, /读取校正记录/);
+  assert.match(liveAfterTool, /正在分析…/);
+  assert.match(liveAfterTool, /inline-spinner/);
+  assert.deepEqual(
+    visibleTimelineRows([{ id: "read", kind: "calculate", status: "done", label: "读取校正记录" }], true).map((row) => row.status),
+    ["done", "live"],
+  );
   const settled = renderToString(createElement(ConsultationRunTimeline, {
     rows: [{ id: "method", kind: "method", status: "done", label: "已加载方法" }],
     live: false,