feat(小宝预警): 增加趋势与解读缓存

apps/web/lib/xiaobao-risk-cache.ts

@@ -0,0 +1,47 @@
+import type { XiaobaoRiskSnapshot } from './xiaobao-risk-trend';
+
+export interface XiaobaoRiskInsight {
+  summary: string;
+  why: string[];
+  forecast: string;
+  recommendedReleaseWindow?: string;
+  suggestedActions: string[];
+  ownerHints: string[];
+  generatedAt: string;
+}
+
+export interface XiaobaoRiskInsightCacheItem {
+  versionId: string;
+  riskSignature: string;
+  insight: XiaobaoRiskInsight;
+  generatedAt: string;
+  providerInfo?: { providerId?: string; model?: string };
+}
+
+export function findCachedInsight(
+  rows: XiaobaoRiskInsightCacheItem[],
+  versionId: string,
+  riskSignature: string,
+): XiaobaoRiskInsightCacheItem | undefined {
+  return rows.find((row) => row.versionId === versionId && row.riskSignature === riskSignature);
+}
+
+export function upsertInsight(
+  rows: XiaobaoRiskInsightCacheItem[],
+  item: XiaobaoRiskInsightCacheItem,
+): XiaobaoRiskInsightCacheItem[] {
+  return [
+    item,
+    ...rows.filter((row) => row.versionId !== item.versionId || row.riskSignature !== item.riskSignature),
+  ];
+}
+
+export function upsertDailySnapshot(
+  rows: XiaobaoRiskSnapshot[],
+  item: XiaobaoRiskSnapshot,
+): XiaobaoRiskSnapshot[] {
+  return [
+    item,
+    ...rows.filter((row) => row.versionId !== item.versionId || row.date !== item.date),
+  ];
+}