refactor: Enhance health-related components by integrating date formatting for last checked timestamps and improving tooltip display, ensuring better readability and user experience

apps/web/src/lib/format.ts

@@ -5,9 +5,23 @@ const dateFormatter = new Intl.DateTimeFormat('ru-RU', {
 
 const relativeFormatter = new Intl.RelativeTimeFormat('ru', { numeric: 'auto' })
 
+/**
+ * SQLite `datetime('now')` возвращает UTC в формате `YYYY-MM-DD HH:MM:SS` без суффикса `Z`.
+ * `new Date(...)` парсит такую строку как локальное время — отображение уезжает на TZ-сдвиг.
+ * Конвертируем в полноценный ISO с `Z`, чтобы `new Date(...)` трактовал время как UTC.
+ */
+export function sqliteUtcToIso(value: string | null | undefined): string | null {
+  if (!value) return null
+  const trimmed = value.trim()
+  if (trimmed.endsWith('Z') || /[+-]\d{2}:?\d{2}$/.test(trimmed)) return trimmed
+  const match = /^(\d{4}-\d{2}-\d{2})[ T](\d{2}:\d{2}:\d{2})/.exec(trimmed)
+  if (!match) return trimmed
+  return `${match[1]}T${match[2]}Z`
+}
+
 export function formatDate(iso: string | null | undefined): string {
   if (!iso) return '—'
-  const date = new Date(iso)
+  const date = new Date(sqliteUtcToIso(iso) ?? iso)
   if (Number.isNaN(date.getTime())) return iso
   return dateFormatter.format(date)
 }

apps/web/src/lib/use-aggregated-health.ts

@@ -1,5 +1,6 @@
 import { useQuery } from '@tanstack/react-query'
 import { healthStatusQueryOptions } from '@/queries'
+import { sqliteUtcToIso } from '@/lib/format'
 import type { IpHealthStatus } from '@/lib/schemas'
 
 export type HealthScope = 'binding' | 'group'
@@ -60,8 +61,9 @@ export function aggregateHealth(rows: IpHealthStatus[]): AggregatedHealth {
       }
     }
     if (row.last_checked_at) {
-      if (!lastCheckedAt || row.last_checked_at > lastCheckedAt) {
-        lastCheckedAt = row.last_checked_at
+      const iso = sqliteUtcToIso(row.last_checked_at) ?? row.last_checked_at
+      if (!lastCheckedAt || iso > lastCheckedAt) {
+        lastCheckedAt = iso
       }
     }
     if (row.last_error && !lastError) lastError = row.last_error