Refactor chat encryption to use sodium, update API

Replaces legacy chat encryption modules with new sodium-based implementation. Adds and updates API routes for chat key management and debugging, introduces new hooks and scripts for sodium chat, and updates related database schema and configuration. Removes old crypto modules and updates dependencies accordingly.

src/app/api/swarm/chat/inbox/route.ts

@@ -64,8 +64,13 @@ export async function POST(request: NextRequest) {
 
       // Also create conversation and message for recipient UI
       // Extract sender info from envelope
-      const senderHandle = body.handle || body.did; // Fallback to DID if no handle
-      const senderFullHandle = `${senderHandle}@${body.did?.split(':')[2] || 'unknown'}`; // Extract domain from DID
+      const senderHandle = body.handle || 'unknown';
+      const senderNodeDomain = body.data?.senderNodeDomain || 'unknown';
+      const senderFullHandle = senderNodeDomain !== 'unknown' 
+        ? `${senderHandle}@${senderNodeDomain}` 
+        : senderHandle;
+      
+      console.log('[Swarm Chat V2] Sender info:', { senderHandle, senderNodeDomain, senderFullHandle });
       
       // Get or create conversation for recipient
       let conversation = await db.query.chatConversations.findFirst({
@@ -108,7 +113,7 @@ export async function POST(request: NextRequest) {
         senderHandle: senderFullHandle,
         senderDisplayName: null, // Unknown until decrypted
         senderAvatarUrl: null,
-        senderNodeDomain: body.did?.split(':')[2] || null,
+        senderNodeDomain: senderNodeDomain !== 'unknown' ? senderNodeDomain : null,
         encryptedContent: JSON.stringify(envelopeData), // Full envelope for decryption
         senderChatPublicKey: null,
         swarmMessageId: `swarm:v2:${messageId}`,