fix(storage): reset legacy data hint after directory changes

src/components/common/Settings/DataStorage/StorageManageSection.vue

@@ -9,6 +9,7 @@ import { usePlatformService } from '@/services'
 import { IS_ELECTRON } from '@/utils/platform'
 import { useCacheService } from '@/services/cache/service'
 import type { CacheInfo } from '@/services/cache/types'
+import { clearMigrateHintIgnore, isMigrateHintIgnoredForDir, writeMigrateHintIgnore } from './migrateHintIgnore'
 
 const { t } = useI18n()
 
@@ -75,10 +76,6 @@ const canMigrateToDefault = computed(() => {
   )
 })
 
-function getMigrateHintIgnoreKey(pathValue: string, defaultPathValue: string): string {
-  return `chatlab_ignore_migrate_default_hint:${pathValue}:${defaultPathValue}`
-}
-
 function updateMigrateHintIgnored() {
   if (!dataDir.value || !defaultDataDir.value) {
     isMigrateHintIgnored.value = false
@@ -86,8 +83,7 @@ function updateMigrateHintIgnored() {
   }
 
   try {
-    isMigrateHintIgnored.value =
-      localStorage.getItem(getMigrateHintIgnoreKey(dataDir.value, defaultDataDir.value)) === '1'
+    isMigrateHintIgnored.value = isMigrateHintIgnoredForDir(localStorage, dataDir.value)
   } catch {
     isMigrateHintIgnored.value = false
   }
@@ -190,7 +186,7 @@ function ignoreMigrateHint() {
   if (!dataDir.value || !defaultDataDir.value) return
 
   try {
-    localStorage.setItem(getMigrateHintIgnoreKey(dataDir.value, defaultDataDir.value), '1')
+    writeMigrateHintIgnore(localStorage, dataDir.value)
   } catch {
     // localStorage 不可用时只在当前页面隐藏，避免阻塞用户继续使用设置页。
   }
@@ -222,6 +218,14 @@ async function applyDataDirChange(newDir: string | null, migrate: boolean) {
       return
     }
 
+    if (result.requiresRelaunch !== false) {
+      try {
+        clearMigrateHintIgnore(localStorage)
+      } catch {
+        // localStorage 清理失败不影响目录切换，下一次加载时仍会按当前内存状态处理。
+      }
+    }
+
     if (result.requiresRelaunch === false) {
       await loadDataDir()
       return

src/components/common/Settings/DataStorage/migrateHintIgnore.ts

@@ -0,0 +1,47 @@
+export const MIGRATE_HINT_IGNORE_KEY = 'chatlab_ignore_migrate_default_hint'
+
+interface MigrateHintIgnoreState {
+  ignoredForDataDir: string
+  ignoredAt: string
+}
+
+interface StorageLike {
+  getItem(key: string): string | null
+  setItem(key: string, value: string): void
+  removeItem(key: string): void
+}
+
+function readMigrateHintIgnore(storage: StorageLike): MigrateHintIgnoreState | null {
+  const raw = storage.getItem(MIGRATE_HINT_IGNORE_KEY)
+  if (!raw) return null
+
+  try {
+    const parsed = JSON.parse(raw) as Partial<MigrateHintIgnoreState>
+    if (!parsed.ignoredForDataDir || !parsed.ignoredAt) return null
+    return {
+      ignoredForDataDir: parsed.ignoredForDataDir,
+      ignoredAt: parsed.ignoredAt,
+    }
+  } catch {
+    return null
+  }
+}
+
+export function isMigrateHintIgnoredForDir(storage: StorageLike, dataDir: string): boolean {
+  const state = readMigrateHintIgnore(storage)
+  return state?.ignoredForDataDir === dataDir
+}
+
+export function writeMigrateHintIgnore(storage: StorageLike, dataDir: string): void {
+  storage.setItem(
+    MIGRATE_HINT_IGNORE_KEY,
+    JSON.stringify({
+      ignoredForDataDir: dataDir,
+      ignoredAt: new Date().toISOString(),
+    } satisfies MigrateHintIgnoreState)
+  )
+}
+
+export function clearMigrateHintIgnore(storage: StorageLike): void {
+  storage.removeItem(MIGRATE_HINT_IGNORE_KEY)
+}