fix(backend): match the authenticated user into get/download/delete operations

backend/.sqlx/query-89c32ebfbbdf3f7d6fe47becb7b074a737b1627bc9c4cabbf2abe145d842b8f9.json

@@ -0,0 +1,42 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n            INSERT INTO sessions (id, user_id, expires_at)\n            VALUES ($1, $2, $3)\n            RETURNING *\n            ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "id",
+        "type_info": "Text"
+      },
+      {
+        "ordinal": 1,
+        "name": "user_id",
+        "type_info": "Int8"
+      },
+      {
+        "ordinal": 2,
+        "name": "expires_at",
+        "type_info": "Timestamptz"
+      },
+      {
+        "ordinal": 3,
+        "name": "created_at",
+        "type_info": "Timestamptz"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Text",
+        "Int8",
+        "Timestamptz"
+      ]
+    },
+    "nullable": [
+      false,
+      false,
+      false,
+      false
+    ]
+  },
+  "hash": "89c32ebfbbdf3f7d6fe47becb7b074a737b1627bc9c4cabbf2abe145d842b8f9"
+}