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/app/xiaobao-warning/page.tsx

@@ -16,6 +16,7 @@ import {
   filterXiaobaoRiskWarnings,
   formatRemainingWork,
   isXiaobaoWarningUpdated,
+  shouldSkipXiaobaoRiskInsightRequestForReadState,
   sanitizeRiskInsight,
 } from '@/lib/xiaobao-warning-view';
 import { formatDateTime } from '@/lib/format';
@@ -90,6 +91,7 @@ function XiaobaoWarningContent() {
 
   useEffect(() => {
     risks.forEach((risk) => {
+      if (shouldSkipXiaobaoRiskInsightRequestForReadState(risk, readStates, user?.id, readStateLoaded)) return;
       const previous = findPreviousRiskSnapshot(snapshots, risk.versionId, today);
       const key = buildXiaobaoRiskInsightPendingKey(risk);
       if (!shouldRequestRiskInsightWithRequestGate({
@@ -123,11 +125,14 @@ function XiaobaoWarningContent() {
     insights,
     insightRequestAttempts,
     pendingInsightKeys,
+    readStateLoaded,
+    readStates,
     riskDataLoaded,
     risks,
     saveInsight,
     snapshots,
     today,
+    user?.id,
   ]);
 
   const risksWithInsight = useMemo(() => risks.map((risk) => attachXiaobaoRiskSuggestion(risk, {