配置改为数据库存储

将运行时 JSON 配置迁入 app_config_entries，启动时从文件导入并删除源文件。

apps/backend/src/services/notification/config-service.ts

@@ -1,7 +1,11 @@
 import path from 'node:path'
 
+import { APP_CONFIG_KEYS } from '../../config/app-config-keys.js'
 import { PROJECT_ROOT } from '../../config/runtime.js'
-import { readJsonFile, writeJsonFile } from '../../utils/json-file-store.js'
+import {
+  readAppConfigEntry,
+  saveAppConfigEntry,
+} from '../config/app-config-store.js'
 
 const NOTIFICATION_CONFIG_FILE_PATH = path.join(PROJECT_ROOT, 'data', 'notification-config.json')
 const DEFAULT_BARK_SERVER_URL = 'https://api.day.app'
@@ -20,11 +24,21 @@ export function getNotificationConfigFilePath() {
 }
 
 export function getNotificationConfig() {
-  return loadNotificationConfigFromFile()
+  return readAppConfigEntry({
+    configKey: APP_CONFIG_KEYS.notification,
+    legacyFilePath: NOTIFICATION_CONFIG_FILE_PATH,
+    fallback: createDefaultNotificationConfig,
+    normalize: normalizeNotificationConfig,
+  })
 }
 
 export function saveNotificationConfig(rawValue: unknown) {
-  return writeJsonFile(NOTIFICATION_CONFIG_FILE_PATH, rawValue, normalizeNotificationConfig)
+  return saveAppConfigEntry({
+    configKey: APP_CONFIG_KEYS.notification,
+    legacyFilePath: NOTIFICATION_CONFIG_FILE_PATH,
+    value: rawValue,
+    normalize: normalizeNotificationConfig,
+  })
 }
 
 export function listEnabledBarkRecipients(config: JsonObject = getNotificationConfig()) {
@@ -45,14 +59,6 @@ export function listEnabledWpushRecipients(config: JsonObject = getNotificationC
     .filter((item: JsonObject) => item.enabled !== false && String(item.apiKey || item.apikey || '').trim())
 }
 
-function loadNotificationConfigFromFile() {
-  return readJsonFile(
-    NOTIFICATION_CONFIG_FILE_PATH,
-    createDefaultNotificationConfig,
-    normalizeNotificationConfig,
-  )
-}
-
 export function normalizeNotificationConfig(rawValue: unknown) {
   const source = isPlainObject(rawValue) ? rawValue : {}
   const bark = isPlainObject(source.channels?.bark) ? source.channels.bark : {}