feat(api,userbot,frontend): search peers without chats and start tracking them

frontend/src/lib/api/endpoints.ts

@@ -9,6 +9,7 @@ import type {
   Chat,
   ChatLinkView,
   DayCount,
+  DiscoverItem,
   Folder,
   JobStatus,
   JobView,
@@ -301,6 +302,37 @@ export function enqueueBackfill(
   });
 }
 
+export function discoverPeers(
+  query: string,
+  remote = false
+): Promise<DiscoverItem[]> {
+  return request<DiscoverItem[]>("/discover", {
+    account: true,
+    query: { query, remote },
+  });
+}
+
+export function getDiscoverItem(chatId: number): Promise<DiscoverItem> {
+  return request<DiscoverItem>(`/discover/${chatId}`, { account: true });
+}
+
+export function trackChat(
+  chatId: number,
+  backfill = true
+): Promise<DiscoverItem> {
+  return request<DiscoverItem>(`/chats/${chatId}/track`, {
+    method: "POST",
+    body: { account_id: accounts.selectedId, backfill },
+  });
+}
+
+export function syncContacts(): Promise<{ job_id: number }> {
+  return request<{ job_id: number }>("/contacts/sync", {
+    method: "POST",
+    body: { account_id: accounts.selectedId },
+  });
+}
+
 export function syncDialogs(): Promise<{ job_id: number }> {
   return request<{ job_id: number }>("/dialogs/sync", {
     method: "POST",