fix(api): remove manual PushEndpoints type and add changeset

- Remove manual `PushEndpoints` type from rest-typings; push endpoint
  types are now derived automatically via `ExtractRoutesFromAPI` and
  module augmentation in the Meteor server file
- Add changeset for the push API migration

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: smirk-dev

.changeset/migrate-push-endpoints.md

@@ -0,0 +1,6 @@
+---
+"@rocket.chat/meteor": minor
+"@rocket.chat/rest-typings": minor
+---
+
+Migrate push REST API endpoints to chained API pattern with AJV request/response schema validation and OpenAPI documentation support.

packages/rest-typings/src/index.ts

@@ -33,7 +33,6 @@ import type { MiscEndpoints } from './v1/misc';
 import type { ModerationEndpoints } from './v1/moderation';
 import type { OmnichannelEndpoints } from './v1/omnichannel';
 import type { PresenceEndpoints } from './v1/presence';
-import type { PushEndpoints } from './v1/push';
 import type { RolesEndpoints } from './v1/roles';
 import type { RoomsEndpoints } from './v1/rooms';
 import type { ServerEventsEndpoints } from './v1/server-events';
@@ -62,7 +61,6 @@ export interface Endpoints
 		ImEndpoints,
 		LDAPEndpoints,
 		RoomsEndpoints,
-		PushEndpoints,
 		RolesEndpoints,
 		TeamsEndpoints,
 		SettingsEndpoints,

packages/rest-typings/src/v1/push.ts

@@ -1,4 +1,4 @@
-import type { IMessage, IPushNotificationConfig, IPushTokenTypes } from '@rocket.chat/core-typings';
+import type { IPushTokenTypes } from '@rocket.chat/core-typings';
 
 import { ajv } from './Ajv';
 
@@ -48,20 +48,3 @@ const PushGetPropsSchema = {
 };
 
 export const isPushGetProps = ajv.compile<PushGetProps>(PushGetPropsSchema);
-
-export type PushEndpoints = {
-	'/v1/push.get': {
-		GET: (params: PushGetProps) => {
-			data: {
-				message: IMessage;
-				notification: IPushNotificationConfig;
-			};
-		};
-	};
-	'/v1/push.info': {
-		GET: () => {
-			pushGatewayEnabled: boolean;
-			defaultPushGateway: boolean;
-		};
-	};
-};