added token loading from env vars

src/envelopePlugin.ts

@@ -7,12 +7,11 @@ type UserType = {
 
 const resolveUserFn = async context => {
     const authHeader = context.req.headers.authorization;
-    if (authHeader !== "token123") {
+    const authtoken = process.env.GRAPHQL_MESH
+    if (authHeader !== authtoken) {
         console.error('Failed to validate token')
         return null
     }
-    // If the token is valid, return the user
-    // Replace this with your actual user fetching logic
     return { id: 'user1' };
 }