feat(notifications): TODO 7 — draft decision toast + email + bell badge

ordinis-admin-ui/src/api/client.ts

@@ -687,3 +687,35 @@ export type ChangelogDiff = {
   after: unknown | null
   summary: ChangelogDiffSummary
 }
+
+// === Notifications (TODO 7: draft decision toast + email) ===
+
+/**
+ * Single notification row для current user. Backend serializes
+ * {@code notification_log} entry joined с {@code notification_read_state}
+ * (per-user unread tracking).
+ *
+ * <p>{@code payload} — JSON payload эвента (e.g. RecordDraftApproved).
+ * {@code payloadPreview} — server-pre-rendered summary string чтобы UI
+ * не парсил event payload (event_type → user-facing text mapping живёт
+ * backend'е).
+ */
+export type NotificationItem = {
+  id: string
+  eventType: string
+  channel: 'EMAIL' | 'EXPRESS' | 'TELEGRAM' | 'IN_APP'
+  sentAt: string
+  read: boolean
+  payloadPreview: string
+  /** Optional deep-link (e.g. /reviews/{draftId} для draft decision). */
+  href?: string | null
+}
+
+export type NotificationsResponse = {
+  items: NotificationItem[]
+  page: number
+  size: number
+  totalElements: number
+  /** Unread count for badge — pre-filtered server-side. */
+  totalUnread: number
+}