feat(POS-FIX-10): completed feature

backlog/features.json

@@ -7672,6 +7672,23 @@
         "close": true
       },
       "completed_at": "2026-08-24T05:44:30Z"
+    },
+    {
+      "id": "POS-FIX-10",
+      "type": "fix",
+      "title": "POS: DELETE /pos/sales/:id devuelve 405 Method Not Allowed",
+      "description": "El endpoint DELETE /pos/sales/:id no responde. Posible causa: servidor no reiniciado o conflicto de rutas en Fastify.",
+      "priority": "high",
+      "risk": "low",
+      "status": "done",
+      "created_at": "2026-08-24",
+      "gates": {
+        "reviewer": true,
+        "security": true,
+        "qa": true,
+        "close": true
+      },
+      "completed_at": "2026-08-24T06:08:06Z"
     }
   ]
 }