feat(whatsapp): per-tenant WhatsApp configuration

- Refactor whatsapp_service.py to accept bridge_url parameter
- whatsapp_bp.py: remove hardcoded tenant_id=11, use g.tenant_id
- whatsapp_bp.py: webhook now accepts ?tenant_id param with fallback
- config_bp.py: add GET/PUT /config/whatsapp endpoints
- Each tenant can now have its own Baileys bridge URL and settings

pos/services/whatsapp_service.py

@@ -1,6 +1,7 @@
 """WhatsApp service via Baileys Bridge (self-hosted, free).
 
-Simple REST bridge at localhost:21465 that wraps WhatsApp Web via Baileys.
+Simple REST bridge that wraps WhatsApp Web via Baileys.
+Supports per-tenant configuration via bridge_url parameter.
 """
 
 import requests
@@ -9,47 +10,56 @@ from config import WHATSAPP_BRIDGE_URL
 HEADERS = {'Content-Type': 'application/json'}
 
 
-def get_status():
+def _get_url(bridge_url=None):
+    return bridge_url or WHATSAPP_BRIDGE_URL
+
+
+def get_status(bridge_url=None):
+    url = _get_url(bridge_url)
     try:
-        return requests.get(f'{WHATSAPP_BRIDGE_URL}/status', timeout=5).json()
+        return requests.get(f'{url}/status', timeout=5).json()
     except Exception as e:
         return {'state': 'error', 'error': str(e)}
 
 
-def get_qr():
+def get_qr(bridge_url=None):
+    url = _get_url(bridge_url)
     try:
-        return requests.get(f'{WHATSAPP_BRIDGE_URL}/qr', timeout=5).json()
+        return requests.get(f'{url}/qr', timeout=5).json()
     except Exception as e:
         return {'state': 'error', 'error': str(e)}
 
 
-def connect():
+def connect(bridge_url=None):
+    url = _get_url(bridge_url)
     try:
-        return requests.post(f'{WHATSAPP_BRIDGE_URL}/connect', headers=HEADERS, timeout=5).json()
+        return requests.post(f'{url}/connect', headers=HEADERS, timeout=5).json()
     except Exception as e:
         return {'state': 'error', 'error': str(e)}
 
 
-def send_message(phone, text):
+def send_message(phone, text, bridge_url=None):
+    url = _get_url(bridge_url)
     try:
-        return requests.post(f'{WHATSAPP_BRIDGE_URL}/send', headers=HEADERS, json={'phone': phone, 'message': text}, timeout=15).json()
+        return requests.post(f'{url}/send', headers=HEADERS, json={'phone': phone, 'message': text}, timeout=15).json()
     except Exception as e:
         return {'error': str(e)}
 
 
-def send_quote(phone, quote_data):
+def send_quote(phone, quote_data, bridge_url=None):
     lines = [f"*Cotizacion #{quote_data.get('id', '')}*", ""]
     for item in quote_data.get('items', []):
         lines.append(f"- {item.get('quantity', 1)}x {item.get('name', '')} ${item.get('subtotal', 0):,.2f}")
     lines.append(f"\nSubtotal: ${quote_data.get('subtotal', 0):,.2f}")
     lines.append(f"IVA: ${quote_data.get('tax_total', 0):,.2f}")
     lines.append(f"*Total: ${quote_data.get('total', 0):,.2f}*")
-    return send_message(phone, "\n".join(lines))
+    return send_message(phone, "\n".join(lines), bridge_url=bridge_url)
 
 
-def logout():
+def logout(bridge_url=None):
+    url = _get_url(bridge_url)
     try:
-        return requests.post(f'{WHATSAPP_BRIDGE_URL}/logout', headers=HEADERS, timeout=5).json()
+        return requests.post(f'{url}/logout', headers=HEADERS, timeout=5).json()
     except Exception as e:
         return {'error': str(e)}
 
@@ -72,6 +82,7 @@ def process_incoming(webhook_data):
             media_base64     — base64 string if media, else None
             media_mimetype   — e.g. 'image/jpeg', 'audio/ogg'
             is_voice_note    — True for WhatsApp voice notes (audioMessage ptt)
+            push_name        — display name from WhatsApp
     """
     data = webhook_data.get('data', {})
     key = data.get('key', {})