fix(messaging): parse postbackText from Gupshup list_reply, pass selection ID to AI

Gupshup list_reply has empty id field — postbackText carries our ID.
Fixed ?? to || fallback. Also inject selection_id into user message so
AI can extract doctorId from "doc:{uuid}:{name}" format.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/messaging/messaging.controller.ts

@@ -13,7 +13,7 @@ export class MessagingController {
 
     @Post('webhook')
     async webhook(@Body() body: any) {
-        this.logger.log(`[WA-WEBHOOK] Received: ${JSON.stringify(body).substring(0, 300)}`);
+        this.logger.log(`[WA-WEBHOOK] Received: ${JSON.stringify(body).substring(0, 500)}`);
 
         if (!this.provider.validateWebhook(body)) {
             this.logger.warn('[WA-WEBHOOK] Validation failed — ignoring');

src/messaging/messaging.service.ts

@@ -72,9 +72,15 @@ export class MessagingService {
 
         // 3. Load conversation history
         const history = await this.conversation.getHistory(phone);
+        // For interactive replies, include the selection ID so the AI can
+        // extract structured data (e.g. "doc:{uuid}:{name}" → doctorId)
+        let userContent = text;
+        if (message.type === 'interactive_reply' && message.interactiveReply?.id) {
+            userContent = `[Selected: ${message.interactiveReply.title}] (selection_id: ${message.interactiveReply.id})`;
+        }
         const messages = [
             ...history.map(h => ({ role: h.role as 'user' | 'assistant', content: h.content })),
-            { role: 'user' as const, content: text },
+            { role: 'user' as const, content: userContent },
         ];
 
         // 4. Build system prompt

src/messaging/providers/gupshup.provider.ts

@@ -47,12 +47,14 @@ export class GupshupProvider extends MessagingProvider {
         }
 
         if (msgType === 'button_reply' || msgType === 'list_reply') {
+            // Gupshup sends postbackText (our ID), id can be empty string
+            const replyId = payload.payload?.postbackText || payload.payload?.id || payload.payload?.reply || '';
             return {
                 phone, name,
                 text: payload.payload?.title ?? '',
                 type: 'interactive_reply',
                 interactiveReply: {
-                    id: payload.payload?.id ?? payload.payload?.postbackText ?? '',
+                    id: replyId,
                     title: payload.payload?.title ?? '',
                 },
                 rawPayload: body,