chore: 项目环境升级为 JDK25，Spring 4.1，项目重构为多模块

web-ui/packages/agent/src/eventCache.ts

@@ -0,0 +1,57 @@
+import type { AgentEvent } from './api'
+
+const DB_NAME = 'smart-factory-agent'
+const STORE_NAME = 'events'
+
+function openDatabase() {
+  return new Promise<IDBDatabase>((resolve, reject) => {
+    const request = indexedDB.open(DB_NAME, 1)
+    request.onupgradeneeded = () => {
+      const store = request.result.createObjectStore(STORE_NAME, { keyPath: ['projectId', 'id'] })
+      store.createIndex('projectId', 'projectId')
+    }
+    request.onsuccess = () => resolve(request.result)
+    request.onerror = () => reject(request.error)
+  })
+}
+
+export async function readCachedEvents(projectId: string): Promise<AgentEvent[]> {
+  const database = await openDatabase()
+  return new Promise((resolve, reject) => {
+    const transaction = database.transaction(STORE_NAME, 'readonly')
+    const request = transaction.objectStore(STORE_NAME).index('projectId').getAll(projectId)
+    request.onsuccess = () => resolve((request.result as AgentEvent[]).sort((a, b) => a.id - b.id))
+    request.onerror = () => reject(request.error)
+    transaction.oncomplete = () => database.close()
+  })
+}
+
+export async function cacheEvents(events: AgentEvent[]) {
+  if (!events.length) return
+  const database = await openDatabase()
+  await new Promise<void>((resolve, reject) => {
+    const transaction = database.transaction(STORE_NAME, 'readwrite')
+    const store = transaction.objectStore(STORE_NAME)
+    for (const event of events) store.put(event)
+    transaction.oncomplete = () => resolve()
+    transaction.onerror = () => reject(transaction.error)
+  })
+  database.close()
+}
+
+export async function deleteCachedEvents(projectId: string) {
+  const database = await openDatabase()
+  await new Promise<void>((resolve, reject) => {
+    const transaction = database.transaction(STORE_NAME, 'readwrite')
+    const request = transaction.objectStore(STORE_NAME).index('projectId').openCursor(IDBKeyRange.only(projectId))
+    request.onsuccess = () => {
+      const cursor = request.result
+      if (!cursor) return
+      cursor.delete()
+      cursor.continue()
+    }
+    transaction.oncomplete = () => resolve()
+    transaction.onerror = () => reject(transaction.error)
+  })
+  database.close()
+}