feat(小宝): 优化助手入口与预警已读

关键改动：

- 更新 README 项目说明和小宝相关入口命名

- 优化问翻小宝页面与侧边栏测试

- 小宝预警已读状态抑制同签名重复 AI 请求

Co-Authored-By: Codex GPT-5 <codex@openai.com>

apps/web/lib/xiaobao-warning-view.test.ts

@@ -12,6 +12,7 @@ import {
   getXiaobaoWarningUpdateSignature,
   isXiaobaoWarningUpdated,
   markXiaobaoWarningRead,
+  shouldSkipXiaobaoRiskInsightRequestForReadState,
   sanitizeRiskInsight,
 } from './xiaobao-warning-view';
 
@@ -192,6 +193,31 @@ test('xiaobao warning update state is unread until the current user reads the sa
   assert.equal(isXiaobaoWarningUpdated(baseRisk, readStates, 'user-2'), true);
 });
 
+test('read current warning state suppresses refresh-triggered AI requests only for the same signature', () => {
+  const baseRisk = risk();
+  const readStates = markXiaobaoWarningRead([], 'user-1', baseRisk, '2026-06-30T11:00:00.000Z');
+  const changedRisk = risk({
+    signals: {
+      ...baseRisk.signals,
+      failedTestCount: 1,
+    },
+    riskScore: 72,
+  });
+
+  assert.equal(
+    shouldSkipXiaobaoRiskInsightRequestForReadState(baseRisk, readStates, 'user-1', true),
+    true,
+  );
+  assert.equal(
+    shouldSkipXiaobaoRiskInsightRequestForReadState(changedRisk, readStates, 'user-1', true),
+    false,
+  );
+  assert.equal(
+    shouldSkipXiaobaoRiskInsightRequestForReadState(baseRisk, readStates, 'user-1', false),
+    true,
+  );
+});
+
 test('xiaobao warning update state becomes unread again when risk facts change', () => {
   const baseRisk = risk();
   const readStates = markXiaobaoWarningRead([], 'user-1', baseRisk, '2026-06-30T11:00:00.000Z');