feat: add pinned post functionality

src/services/client.service.ts

@@ -838,14 +838,13 @@ class ClientService extends EventTarget {
     }
 
     let event: NEvent | undefined
-    if (filter.ids) {
+    if (filter.ids?.length) {
       event = await this.fetchEventById(relays, filter.ids[0])
-    } else {
-      if (author) {
-        const relayList = await this.fetchRelayList(author)
-        relays.push(...relayList.write.slice(0, 4))
-      }
-      event = await this.tryHarderToFetchEvent(relays, filter)
+    }
+
+    if (!event && author) {
+      const relayList = await this.fetchRelayList(author)
+      event = await this.tryHarderToFetchEvent(relayList.write.slice(0, 5), filter)
     }
 
     if (event && event.id !== id) {
@@ -1261,6 +1260,8 @@ class ClientService extends EventTarget {
     return params.map(({ pubkey, kind, d }) => {
       const key = `${kind}:${pubkey}:${d ?? ''}`
       const event = eventMap.get(key)
+      if (kind === kinds.Pinlist) return event ?? null
+
       if (event) {
         indexedDb.putReplaceableEvent(event)
         return event
@@ -1321,6 +1322,10 @@ class ClientService extends EventTarget {
     return evt ? getServersFromServerTags(evt.tags) : []
   }
 
+  async fetchPinListEvent(pubkey: string) {
+    return this.fetchReplaceableEvent(pubkey, kinds.Pinlist)
+  }
+
   async updateBlossomServerListEventCache(evt: NEvent) {
     await this.updateReplaceableEventCache(evt)
   }