Mejoras de sesion: estabilizacion, IA, Nexus Yonke y marketplace B2B

- F0 blindaje: Redis/Celery, pg_hba sin trust LAN, secretos a env 600, backups, webhook auth, jobs muertos
- F1 caja: bugs POS, reembolsos al corte, apartados, CFDI, topes de descuento en cotizacion/apartado
- F2/F7 IA de catalogo: autocategorizacion, dedup de SKUs con embeddings, OCR de facturas, descripciones, claves SAT, limpieza de fitment
- F3 IA en el flujo: vision Yonke, preguntas MeLi, venta cruzada, anomalias, sinonimos, busqueda semantica (rerank/embeddings)
- F4/F8 escala y cartera: /metrics+Prometheus+Grafana, pool, score de credito, churn, metricas multi-tenant
- Nexus Yonke (M1-M6): modelo de datos 1-de-1, alta por donador, vitrina publica, MeLi usado, consignacion, garantia por dias, reportes, etiquetas
- Marketplace B2B entre yonkes (catalogo + pedidos cross-tenant)
- Seguridad: auth en /api/admin/* (35 endpoints), alertas por tenant
- Migraciones v4.27/v4.28; timers expire-demos y rollup-metrics

scripts/backup.sh

@@ -31,6 +31,18 @@ log() {
     echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"
 }
 
+# ─── Cleanup old backups (FIRST, so a full disk cannot block it) ───
+log "Cleaning up backups older than $RETENTION_DAYS days ..."
+if [[ "$DRY_RUN" == true ]]; then
+    log "DRY-RUN: would delete backups older than $RETENTION_DAYS days"
+else
+    find "$BACKUP_DIR" -name "nexus_backup_*.tar.gz" -type f -mtime +$RETENTION_DAYS -delete
+    find "$BACKUP_DIR" -name "nexus_backup_*.sql" -type f -mtime +$RETENTION_DAYS -delete
+    # Remove empty leftovers from failed runs (e.g. 0-byte dumps when disk was full)
+    find "$BACKUP_DIR" -name "nexus_backup_*" -type f -empty -delete
+    log "Cleanup complete. Disk usage: $(df -h / | awk 'NR==2{print $3"/"$2" ("$5")"}')"
+fi
+
 # ─── PostgreSQL dump ───
 log "Dumping PostgreSQL database: $DB_NAME ..."
 DUMP_FILE="${BACKUP_DIR}/${BACKUP_NAME}.sql"
@@ -90,14 +102,6 @@ else
     log "INFO: S3_BUCKET not set. Skipping cloud upload."
 fi
 
-# ─── Cleanup old backups ───
-log "Cleaning up backups older than $RETENTION_DAYS days ..."
-if [[ "$DRY_RUN" == true ]]; then
-    log "DRY-RUN: would delete backups older than $RETENTION_DAYS days"
-else
-    find "$BACKUP_DIR" -name "nexus_backup_*.tar.gz" -type f -mtime +$RETENTION_DAYS -delete
-    find "$BACKUP_DIR" -name "nexus_backup_*.sql" -type f -mtime +$RETENTION_DAYS -delete
-    log "Cleanup complete."
-fi
-
+# ─── Cleanup ───
+log "Post-backup cleanup (already done at start)."
 log "Done."