修复 kuaishou-lewan 多账号健康检查与平台配置展示

恢复 health 任务对全部账号的合并监控，补齐 React 后台多账号 UI 与账号选择，并将用户可见文案统一为 kuaishou-lewan。

apps/backend/src/services/scheduler/cloudtentacles-health-job.ts

@@ -191,23 +191,64 @@ function resolveCloudtentaclesHealthAccounts(job: JsonObject) {
   const rawAccounts = Array.isArray(config.accounts) ? config.accounts : []
   const defaultThreshold = normalizeNonNegativeInteger(config.assetThreshold, 500)
   const sourceConfig = listCloudtentaclesSources()
+  const sources = Array.isArray(sourceConfig.sources) ? sourceConfig.sources : []
   const sourceMap = new Map(
-    (Array.isArray(sourceConfig.sources) ? sourceConfig.sources : [])
-      .map((source) => [String(source.key || '').trim(), source]),
+    sources
+      .map((source) => [String(source.key || '').trim(), source] as const)
+      .filter(([sourceKey]) => Boolean(sourceKey)),
   )
-  const normalizedAccounts = rawAccounts
-    .map((item) => normalizeCloudtentaclesHealthAccount(item, defaultThreshold, sourceMap))
+  const configuredMap = new Map(
+    rawAccounts
+      .map((item) => normalizeCloudtentaclesHealthAccount(item, defaultThreshold, sourceMap))
+      .filter(Boolean)
+      .map((item) => [String(item!.sourceKey || '').trim(), item!] as const)
+      .filter(([sourceKey]) => Boolean(sourceKey)),
+  )
+
+  // 以平台配置中的全部账号为准，合并任务里已保存的阈值/开关；新增账号自动纳入监控。
+  const mergedAccounts = sources
+    .map((source) => {
+      const sourceKey = String(source.key || '').trim()
+      if (!sourceKey) {
+        return null
+      }
+
+      const configured = configuredMap.get(sourceKey)
+      return {
+        sourceKey,
+        label: String(
+          configured?.label || source.label || source.username || sourceKey,
+        ).trim() || sourceKey,
+        enabled: configured
+          ? configured.enabled !== false
+          : source.enabled !== false,
+        assetThreshold: normalizeNonNegativeInteger(
+          configured?.assetThreshold,
+          defaultThreshold,
+        ),
+      }
+    })
     .filter(Boolean) as JsonObject[]
 
-  if (normalizedAccounts.length > 0) {
-    return dedupeAccounts(normalizedAccounts)
+  // 保留已配置但源账号已删除的项，便于报 source_missing。
+  for (const [sourceKey, configured] of configuredMap.entries()) {
+    if (sourceMap.has(sourceKey)) {
+      continue
+    }
+    mergedAccounts.push(configured)
   }
 
+  if (mergedAccounts.length > 0) {
+    return dedupeAccounts(mergedAccounts)
+  }
+
+  // 兼容旧配置：没有任何平台账号时，仍检查历史 default。
+  const fallback = configuredMap.get('default')
   return [{
     sourceKey: 'default',
-    label: sourceMap.get('default')?.label || '默认账号',
-    enabled: true,
-    assetThreshold: defaultThreshold,
+    label: String(fallback?.label || '默认账号').trim() || '默认账号',
+    enabled: fallback ? fallback.enabled !== false : true,
+    assetThreshold: normalizeNonNegativeInteger(fallback?.assetThreshold, defaultThreshold),
   }]
 }
 
@@ -249,7 +290,7 @@ function dedupeAccounts(accounts: JsonObject[]) {
 
 function buildCloudtentaclesHealthSummary(results: CloudtentaclesHealthAccountResult[]) {
   if (results.length === 0) {
-    return '未配置 cloudtentacles 监控账号'
+    return '未配置 kuaishou-lewan 监控账号'
   }
 
   const checkedResults = results.filter((item) => !item.skipped)