Fix federated interactions and reply threads

src/app/api/users/[handle]/follow/route.ts

@@ -5,6 +5,7 @@ import { eq, and, sql } from 'drizzle-orm';
 import { requireAuth } from '@/lib/auth';
 import { requireSignedAction } from '@/lib/auth/verify-signature';
 import { isSwarmNode, deliverSwarmFollow, deliverSwarmUnfollow, cacheSwarmUserPosts } from '@/lib/swarm/interactions';
+import { discoverNode } from '@/lib/swarm/discovery';
 
 type RouteContext = { params: Promise<{ handle: string }> };
 
@@ -115,7 +116,12 @@ export async function POST(request: Request, context: RouteContext) {
             }
 
             // Only allow following swarm nodes
-            const isSwarm = await isSwarmNode(remote.domain);
+            let isSwarm = await isSwarmNode(remote.domain);
+            if (!isSwarm) {
+                const discovery = await discoverNode(remote.domain, nodeDomain);
+                isSwarm = discovery.success;
+            }
+
             if (!isSwarm) {
                 return NextResponse.json({ error: 'Can only follow users on Synapsis swarm nodes' }, { status: 400 });
             }

src/app/api/users/[handle]/posts/route.ts

@@ -2,6 +2,7 @@ import { NextResponse } from 'next/server';
 import { db, posts, users, likes } from '@/db';
 import { eq, desc, and, inArray, lt } from 'drizzle-orm';
 import { fetchSwarmUserProfile, isSwarmNode } from '@/lib/swarm/interactions';
+import { discoverNode } from '@/lib/swarm/discovery';
 
 type RouteContext = { params: Promise<{ handle: string }> };
 
@@ -30,7 +31,12 @@ export async function GET(request: Request, context: RouteContext) {
             }
 
             // Only fetch from swarm nodes
-            const isSwarm = await isSwarmNode(remote.domain);
+            let isSwarm = await isSwarmNode(remote.domain);
+            if (!isSwarm) {
+                const discovery = await discoverNode(remote.domain);
+                isSwarm = discovery.success;
+            }
+
             if (!isSwarm) {
                 return NextResponse.json({ posts: [], message: 'Only Synapsis swarm nodes are supported' });
             }
@@ -81,7 +87,12 @@ export async function GET(request: Request, context: RouteContext) {
             }
 
             // Only fetch from swarm nodes
-            const isSwarm = await isSwarmNode(remote.domain);
+            let isSwarm = await isSwarmNode(remote.domain);
+            if (!isSwarm) {
+                const discovery = await discoverNode(remote.domain);
+                isSwarm = discovery.success;
+            }
+
             if (!isSwarm) {
                 return NextResponse.json({ posts: [], message: 'Only Synapsis swarm nodes are supported' });
             }

src/app/api/users/[handle]/route.ts

@@ -3,6 +3,7 @@ import { eq, and } from 'drizzle-orm';
 import { getSession } from '@/lib/auth';
 import { db, users, follows } from '@/db';
 import { fetchSwarmUserProfile, isSwarmNode } from '@/lib/swarm/interactions';
+import { discoverNode } from '@/lib/swarm/discovery';
 
 type RouteContext = { params: Promise<{ handle: string }> };
 
@@ -40,7 +41,12 @@ export async function GET(request: Request, context: RouteContext) {
         if (!user || isRemotePlaceholder) {
             if (remoteHandle && remoteDomain) {
                 // Only fetch from swarm nodes
-                const isSwarm = await isSwarmNode(remoteDomain);
+                let isSwarm = await isSwarmNode(remoteDomain);
+                if (!isSwarm) {
+                    const discovery = await discoverNode(remoteDomain);
+                    isSwarm = discovery.success;
+                }
+
                 if (isSwarm) {
                     const profileData = await fetchSwarmUserProfile(remoteHandle, remoteDomain, 0);
                     if (profileData?.profile) {