feat: notification grouping

Resolve #12211

packages/backend/src/models/json-schema/notification.ts

@@ -12,7 +12,6 @@ export const packedNotificationSchema = {
 			type: 'string',
 			optional: false, nullable: false,
 			format: 'id',
-			example: 'xxxxxxxxxx',
 		},
 		createdAt: {
 			type: 'string',
@@ -22,7 +21,7 @@ export const packedNotificationSchema = {
 		type: {
 			type: 'string',
 			optional: false, nullable: false,
-			enum: [...notificationTypes],
+			enum: [...notificationTypes, 'reaction:grouped', 'renote:grouped'],
 		},
 		user: {
 			type: 'object',
@@ -63,5 +62,33 @@ export const packedNotificationSchema = {
 			type: 'string',
 			optional: true, nullable: true,
 		},
+		reactions: {
+			type: 'array',
+			optional: true, nullable: true,
+			items: {
+				type: 'object',
+				properties: {
+					user: {
+						type: 'object',
+						ref: 'UserLite',
+						optional: false, nullable: false,
+					},
+					reaction: {
+						type: 'string',
+						optional: false, nullable: false,
+					},
+				},
+				required: ['user', 'reaction'],
+			},
+		},
+	},
+	users: {
+		type: 'array',
+		optional: true, nullable: true,
+		items: {
+			type: 'object',
+			ref: 'UserLite',
+			optional: false, nullable: false,
+		},
 	},
 } as const;