feat(sync-log): historial de sincronizaciones WhatsApp en sync_wa_log

- Nueva tabla sync_wa_log (total, created, skipped, updated, errores, origen, modo)
- Log guardado en /pacientes/sync-all, /terceros/send y /automation/run
- Ruta GET /pacientes/historial devuelve últimos 100 registros
- UI: tabla de historial con origen, modo, conteos y detalle de errores

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/routes/automation.py

@@ -13,7 +13,7 @@ from app.services.json_generator import (
     agrupar_por_recepcion,
 )
 from app.services.api_client import get_tns_token, TNS_BASE
-from app.services.whatsapp_sync import sync_paciente
+from app.services.whatsapp_sync import sync_paciente, sync_todos, guardar_sync_log
 
 router = APIRouter(prefix="/automation", tags=["automation"])
 
@@ -266,9 +266,8 @@ async def run_automation(
     if wa_url and wa_key and rows_pac:
         ingest_url = f"{wa_url}/api/lab/ingest_paciente.php"
         try:
-            async with httpx.AsyncClient(timeout=timeout) as wa_client:
-                for row in rows_pac:
-                    await sync_paciente(row, ingest_url, wa_key, wa_client)
+            wa_resultado = await sync_todos(rows_pac, ingest_url, wa_key, timeout, modo="upsert")
+            guardar_sync_log(wa_resultado, user["user_id"], origen="automation", modo="upsert")
         except Exception:
             pass