fix: early-exit guild mesh flush when a peer connects

Default DHT flush wait dropped to 1.2s and resolves as soon as any mesh
peer is live, cutting guild.open joinMesh from ~3s to sub-second on
warm 2-person meshes.

index.js

@@ -2059,11 +2059,15 @@ class PearcordGuild extends EventEmitter {
     }
     if (!force && this._meshJoinedTopic === topicStr) {
       this.reconcileMeshConnectionsFromSwarm()
+      // Already joined: only a short settle wait (or skip if peers already live).
+      if ((this.peers?.size ?? 0) > 0) {
+        return this.guild
+      }
       const flushMs = Number(
         opts.flushMs ??
           process.env.PEARCORD_GUILD_SWARM_FLUSH_MS ??
           process.env.PEARCORD_SWARM_FLUSH_MS ??
-          2500
+          800
       )
       const skipFlush =
         opts.skipFlush === true || process.env.PEARCORD_GUILD_JOIN_SKIP_FLUSH === '1'
@@ -2098,26 +2102,63 @@ class PearcordGuild extends EventEmitter {
     this._bindMeshConnectionHandler()
     this.swarm.join(topic, { server: true, client: true })
     this.reconcileMeshConnectionsFromSwarm()
+    // Prefer a short default: full 2500ms flush was blocking guild.open even when a
+    // peer had already connected mid-wait (common on 2-person meshes).
     const flushMs = Number(
       opts.flushMs ??
         process.env.PEARCORD_GUILD_SWARM_FLUSH_MS ??
         process.env.PEARCORD_SWARM_FLUSH_MS ??
-        2500
+        1200
     )
     const skipFlush =
       opts.skipFlush === true || process.env.PEARCORD_GUILD_JOIN_SKIP_FLUSH === '1'
     if (this.swarm.flush && !skipFlush) {
       let flushed = false
-      await Promise.race([
-        this.swarm.flush().then(
+      let peerEarly = false
+      const flushPromise = this.swarm.flush().then(
         () => {
           flushed = true
         },
         () => {}
-        ),
+      )
+      // Resolve as soon as any mesh peer is live — no need to sit on DHT flush budget.
+      const peerReady = new Promise((resolve) => {
+        const tick = () => {
+          this.reconcileMeshConnectionsFromSwarm?.()
+          if ((this.peers?.size ?? 0) > 0) {
+            peerEarly = true
+            resolve()
+            return true
+          }
+          return false
+        }
+        if (tick()) return
+        const onPeer = () => {
+          if (tick()) {
+            this.removeListener?.('peer', onPeer)
+            clearInterval(iv)
+          }
+        }
+        this.on?.('peer', onPeer)
+        const iv = setInterval(() => {
+          if (tick()) {
+            this.removeListener?.('peer', onPeer)
+            clearInterval(iv)
+          }
+        }, 50)
+        if (typeof iv.unref === 'function') iv.unref()
+        setTimeout(() => {
+          this.removeListener?.('peer', onPeer)
+          clearInterval(iv)
+          resolve()
+        }, flushMs).unref?.()
+      })
+      await Promise.race([
+        flushPromise,
+        peerReady,
         new Promise((resolve) => setTimeout(resolve, flushMs))
       ])
-      if (!flushed) {
+      if (!flushed && !peerEarly) {
         this.emit('mesh-flush-timeout', { flushMs, guildId: this.guild.id })
         void this.swarm.flush().catch(() => {})
       }