feat: send order situações to Tiny for the client's WhatsApp notices

The client already sends WhatsApp notices from Tiny's order situação
(Tiny webhook -> middleware -> n8n). With TINY_STATUS_UPDATES on, a paid
order is set to "Aprovada" once and a finished pickup order to "Pronto
para envio"; pickup orders carry the client's pickup forma de envio
(TINY_FORMA_ENVIO_RETIRADA). The ready event now carries the order and
the Tiny id from the sale's receipt. Off by default until go-live, when
n8n stops sending the DTFIMP designer message.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/smoke_test.py

@@ -204,6 +204,11 @@ def run():
         time.sleep(1)
     else:raise AssertionError('Mock outbox did not drain')
     assert len({e['event_key'] for e in events})==8
+    # Tiny sets the pickup situação from the order it is sent; the fake sale
+    # has no Tiny id, so the real adapter would search for it.
+    ready={e['provider']:e['payload'] for e in events if e['payload']['event']=='ready'}
+    assert ready['tiny']['order']['freight']==order['snapshot']['freight'] and 'tiny_id' in ready['tiny']
+    assert 'order' not in ready['whatsapp']
     print(f"PASS: 8 durable fake receipts. Local test order #{order['number']} retained in Finalizado.")
     return oid