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/terceros.py

@@ -8,7 +8,7 @@ from app.auth import get_current_user
 from app.services.firebird_service import get_firebird_from_config
 from app.services.json_generator import generar_tercero_api
 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, guardar_sync_log
 
 router = APIRouter(prefix="/terceros", tags=["terceros"])
 
@@ -191,8 +191,21 @@ async def send_terceros(
     if wa_url and wa_key and rows:
         ingest_url = f"{wa_url}/api/lab/ingest_paciente.php"
         try:
-            wa_result = await sync_paciente(rows[0], ingest_url, wa_key)
+            wa_result = await sync_paciente(rows[0], ingest_url, wa_key, modo="upsert")
             wa_sync = {"ok": wa_result["ok"], "action": wa_result["action"]}
+            guardar_sync_log(
+                {
+                    "total": 1,
+                    "created":  1 if wa_result["action"] == "created" else 0,
+                    "skipped":  1 if wa_result["action"] == "skipped" else 0,
+                    "updated":  1 if wa_result["action"] == "updated" else 0,
+                    "errores":  0 if wa_result["ok"] else 1,
+                    "detalle":  [] if wa_result["ok"] else [wa_result],
+                },
+                user["user_id"],
+                origen="tercero",
+                modo="upsert",
+            )
         except Exception:
             wa_sync = {"ok": False, "action": "error"}