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/lib/contexts/AuthContext.tsx

@@ -2,7 +2,6 @@
 
 import { createContext, useContext, useEffect, useState } from 'react';
 import { useUserIdentity } from '@/lib/hooks/useUserIdentity';
-import { useChatEncryption } from '@/lib/hooks/useChatEncryption';
 
 export interface User {
     id: string;
@@ -68,9 +67,6 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
         }
     };
 
-    // Integrate chat encryption hook
-    const { ensureReady } = useChatEncryption();
-
     const [showUnlockPrompt, setShowUnlockPrompt] = useState(false);
 
     /**
@@ -83,15 +79,16 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
             throw new Error('No encrypted private key available');
         }
 
-        await unlockIdentityHook(targetUser.privateKeyEncrypted, password);
-
-        // Initialize Chat Keys (Async, don't block UI but start it)
-        if (targetUser.id) {
-            ensureReady(password, targetUser.id).catch(err => {
-                console.error('Failed to initialize chat keys:', err);
-            });
-        }
+        await unlockIdentityHook(
+            targetUser.privateKeyEncrypted, 
+            password,
+            targetUser.did,
+            targetUser.handle,
+            targetUser.publicKey
+        );
 
+        // Signal Protocol will auto-initialize when the chat page is opened
+        
         setShowUnlockPrompt(false); // Close prompt on success
     };