frontend: polish app launch and release experience

neode-ui/src/utils/appUsage.ts

@@ -0,0 +1,43 @@
+const STORAGE_KEY = 'archipelago-app-usage'
+
+export interface AppUsageEntry {
+  count: number
+  lastLaunchedAt: number
+}
+
+export type AppUsageMap = Record<string, AppUsageEntry>
+
+function readUsage(): AppUsageMap {
+  try {
+    const raw = localStorage.getItem(STORAGE_KEY)
+    if (!raw) return {}
+    const parsed = JSON.parse(raw) as AppUsageMap
+    if (!parsed || typeof parsed !== 'object') return {}
+    return parsed
+  } catch {
+    return {}
+  }
+}
+
+function writeUsage(usage: AppUsageMap) {
+  try {
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(usage))
+  } catch {
+    // Ignore unavailable or full localStorage.
+  }
+}
+
+export function recordAppLaunch(appId: string, now = Date.now()) {
+  if (!appId) return
+  const usage = readUsage()
+  const current = usage[appId]
+  usage[appId] = {
+    count: (current?.count || 0) + 1,
+    lastLaunchedAt: now,
+  }
+  writeUsage(usage)
+}
+
+export function getAppUsage(): AppUsageMap {
+  return readUsage()
+}