Implement backend structure with Docker, database schema, and user authentication

backend/package-lock.json

@@ -13,6 +13,7 @@
         "dotenv": "^17.2.3",
         "ejs": "^3.1.10",
         "express": "^5.2.1",
+        "jose": "^6.0.12",
         "mysql2": "^3.16.0"
       }
     },
@@ -586,6 +587,15 @@
         "node": ">=10"
       }
     },
+    "node_modules/jose": {
+      "version": "6.2.3",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-6.2.3.tgz",
+      "integrity": "sha512-YYVDInQKFJfR/xa3ojUTl8c2KoTwiL1R5Wg9YCydwH0x0B9grbzlg5HC7mMjCtUJjbQ/YnGEZIhI5tCgfTb4Hw==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
     "node_modules/long": {
       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/long/-/long-5.3.2.tgz",