fix: restore whatsapp routes and add diagnostic logs

apps/api/src/routes/whatsapp.ts

@@ -175,27 +175,15 @@ export async function whatsappRoutes(fastify: FastifyInstance) {
         // ── 4. Background Processing (enqueue to Worker) ──
         setImmediate(async () => {
             try {
-                const parsed = WebhookPayloadSchema.safeParse(request.body);
-                if (!parsed.success) return;
+                const parsed = WebhookPayloadSchema.safeParse(body); // Use 'body' here
+                if (!parsed.success) {
+                    fastify.log.warn(`[WEBHOOK] Failed to parse webhook payload: ${parsed.error.message}`);
+                    return;
+                }
 
                 const { scheduleInboundMessage } = await import('../services/queue');
                 const payload = parsed.data;
 
-                for (const entry of payload.entry) {
-                    for (const change of entry.changes) {
-                        const messages = change.value.messages ?? [];
-
-                        for (const message of messages) {
-                            const phone = message.from;
-                            const messageId = message.id;
-
-                            if (message.type === 'text' && message.text) {
-                                await scheduleInboundMessage({ phone, text: message.text.body, messageId });
-
-                            } else if (message.type === 'interactive' && message.interactive) {
-                                let text = '';
-                                if (message.interactive.type === 'button_reply' && message.interactive.button_reply) {
-                                    text = message.interactive.button_reply.id;
                                 } else if (message.interactive.type === 'list_reply' && message.interactive.list_reply) {
                                     text = message.interactive.list_reply.id;
                                 }