diff --git a/backend/package-lock.json b/backend/package-lock.json
index e435f21c..71bc82e9 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -18,8 +18,9 @@
         "dotenv": "^17.2.1",
         "express": "^5.1.0",
         "express-rate-limit": "^8.2.1",
-        "file-type": "^18.5.0",
+        "file-type": "^22.0.1",
         "form-data": "^4.0.5",
+        "gaxios": "^7.3.0",
         "helmet": "^8.3.0",
         "joi": "^18.0.2",
         "jsonwebtoken": "^9.0.2",
@@ -34,44 +35,18 @@
       "devDependencies": {
         "nodemon": "^3.1.10",
         "supertest": "^7.2.2",
+        "uuid": "^14.0.1",
         "vitest": "^4.1.9"
       }
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-    "node_modules/@emnapi/core": {
-      "version": "1.11.3",
-      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.11.3.tgz",
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-      "dev": true,
-      "license": "MIT",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "@emnapi/wasi-threads": "1.2.3",
-        "tslib": "^2.4.0"
-      }
-    },
-    "node_modules/@emnapi/runtime": {
-      "version": "1.11.3",
-      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.11.3.tgz",
-      "integrity": "sha512-Xz4Tpyki7XyrpbUK1jR1AhdAdaXyhhY4lZ3neLodmhpuWfy2PAQN5B46sAiU4liOXGLkHypn/qU+jvfWSCYYLA==",
-      "dev": true,
+    "node_modules/@borewit/text-codec": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/@borewit/text-codec/-/text-codec-0.2.2.tgz",
+      "integrity": "sha512-DDaRehssg1aNrH4+2hnj1B7vnUGEjU6OIlyRdkMd0aUdIUvKXrJfXsy8LVtXAy7DRvYVluWbMspsRhz2lcW0mQ==",
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-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "tslib": "^2.4.0"
-      }
-    },
-    "node_modules/@emnapi/wasi-threads": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.3.tgz",
-      "integrity": "sha512-ELEBe8PsLvvJ6QMr0zLt8ffvOHW/dc1m3CEzNMg7aJUv3bMaoDtw2TXyDAwkYBuroxxuHEwhRTLJSe5sya547g==",
-      "dev": true,
-      "license": "MIT",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "tslib": "^2.4.0"
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/Borewit"
       }
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     "node_modules/@google/genai": {
@@ -714,6 +689,23 @@
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       "license": "MIT"
     },
+    "node_modules/@tokenizer/inflate": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@tokenizer/inflate/-/inflate-0.4.1.tgz",
+      "integrity": "sha512-2mAv+8pkG6GIZiF1kNg1jAjh27IDxEPKwdGul3snfztFerfPGI1LjDezZp3i7BElXompqEtPmoPx6c2wgtWsOA==",
+      "license": "MIT",
+      "dependencies": {
+        "debug": "^4.4.3",
+        "token-types": "^6.1.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/Borewit"
+      }
+    },
     "node_modules/@tokenizer/token": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/@tokenizer/token/-/token-0.3.0.tgz",
@@ -884,18 +876,6 @@
         "url": "https://opencollective.com/vitest"
       }
     },
-    "node_modules/abort-controller": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/abort-controller/-/abort-controller-3.0.0.tgz",
-      "integrity": "sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==",
-      "license": "MIT",
-      "dependencies": {
-        "event-target-shim": "^5.0.0"
-      },
-      "engines": {
-        "node": ">=6.5"
-      }
-    },
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       "resolved": "https://registry.npmjs.org/accepts/-/accepts-2.0.0.tgz",
@@ -1113,30 +1093,6 @@
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-    "node_modules/buffer": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/buffer/-/buffer-6.0.3.tgz",
-      "integrity": "sha512-FTiCpNxtwiZZHEZbcbTIcZjERVICn9yq/pDFkTl95/AxzD1naBctN7YO68riM/gLSDY7sdrMby8hofADYuuqOA==",
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
-      ],
-      "license": "MIT",
-      "dependencies": {
-        "base64-js": "^1.3.1",
-        "ieee754": "^1.2.1"
-      }
-    },
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       "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
@@ -1371,6 +1327,15 @@
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       }
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+    "node_modules/data-uri-to-buffer": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/data-uri-to-buffer/-/data-uri-to-buffer-4.0.1.tgz",
+      "integrity": "sha512-0R9ikRb668HB7QDxT1vkpuUBtqc53YyAwMwGeUFKRojY/NWKvdZ+9UYtRfGmhqNbRkTSVpMbmyhXipFFv2cb/A==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 12"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -1554,24 +1519,6 @@
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-    "node_modules/event-target-shim": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/event-target-shim/-/event-target-shim-5.0.1.tgz",
-      "integrity": "sha512-i/2XbnSz/uxRCU6+NdVJgKWDTM427+MqYbkQzD321DuCQJUqOuJKIA0IM2+W2xtYHdKOmZ4dR6fExsd4SXL+WQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=6"
-      }
-    },
-    "node_modules/events": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/events/-/events-3.3.0.tgz",
-      "integrity": "sha512-mQw+2fkQbALzQ7V0MY0IqdnXNOeTtP4r0lN9z7AAawCXgqea7bDii20AYrIBrFd/Hx0M2Ocz6S111CaFkUcb0Q==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=0.8.x"
-      }
-    },
     "node_modules/expect-type": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/expect-type/-/expect-type-1.4.0.tgz",
@@ -1661,18 +1608,42 @@
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       "license": "Unlicense"
     },
+    "node_modules/fetch-blob": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/fetch-blob/-/fetch-blob-3.2.0.tgz",
+      "integrity": "sha512-7yAQpD2UMJzLi1Dqv7qFYnPbaPx7ZfFK6PiIxQ4PfkGPyNyl2Ugx+a/umUonmKqjhM4DnfbMvdX6otXq83soQQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/jimmywarting"
+        },
+        {
+          "type": "paypal",
+          "url": "https://paypal.me/jimmywarting"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "node-domexception": "^1.0.0",
+        "web-streams-polyfill": "^3.0.3"
+      },
+      "engines": {
+        "node": "^12.20 || >= 14.13"
+      }
+    },
     "node_modules/file-type": {
-      "version": "18.7.0",
-      "resolved": "https://registry.npmjs.org/file-type/-/file-type-18.7.0.tgz",
-      "integrity": "sha512-ihHtXRzXEziMrQ56VSgU7wkxh55iNchFkosu7Y9/S+tXHdKyrGjVK0ujbqNnsxzea+78MaLhN6PGmfYSAv1ACw==",
+      "version": "22.0.1",
+      "resolved": "https://registry.npmjs.org/file-type/-/file-type-22.0.1.tgz",
+      "integrity": "sha512-ww5Mhre0EE+jmBvOXTmXAbEMuZE7uX4a3+oRCQFNj8w++g3ev913N6tXQz0XTXbueQ5TWQfm6BdaViEHHn8bhA==",
       "license": "MIT",
       "dependencies": {
-        "readable-web-to-node-stream": "^3.0.2",
-        "strtok3": "^7.0.0",
-        "token-types": "^5.0.1"
+        "@tokenizer/inflate": "^0.4.1",
+        "strtok3": "^10.3.5",
+        "token-types": "^6.1.2",
+        "uint8array-extras": "^1.5.0"
       },
       "engines": {
-        "node": ">=14.16"
+        "node": ">=22"
       },
       "funding": {
         "url": "https://github.com/sindresorhus/file-type?sponsor=1"
@@ -1765,6 +1736,18 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/formdata-polyfill": {
+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/formdata-polyfill/-/formdata-polyfill-4.0.10.tgz",
+      "integrity": "sha512-buewHzMvYL29jdeQTVILecSaZKnt/RJWjoZCF5OW60Z67/GmSLBkOFM7qh1PI3zFNtJbaZL5eQu1vLfazOwj4g==",
+      "license": "MIT",
+      "dependencies": {
+        "fetch-blob": "^3.1.2"
+      },
+      "engines": {
+        "node": ">=12.20.0"
+      }
+    },
     "node_modules/formidable": {
       "version": "3.5.4",
       "resolved": "https://registry.npmjs.org/formidable/-/formidable-3.5.4.tgz",
@@ -1826,19 +1809,35 @@
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     },
     "node_modules/gaxios": {
-      "version": "6.7.1",
-      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-6.7.1.tgz",
-      "integrity": "sha512-LDODD4TMYx7XXdpwxAVRAIAuB0bzv0s+ywFonY46k126qzQHT9ygyoa9tncmOiQmmDrik65UYsEkv3lbfqQ3yQ==",
+      "version": "7.3.0",
+      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-7.3.0.tgz",
+      "integrity": "sha512-RB5vLV+vvQeoFPCX4QMK6/hjVkbIamPp1QSUD0CiZcnj12qbpiL+pLbYtgD+oZkWl0tl9z+o2Utp+MpM3QRhBA==",
       "license": "Apache-2.0",
       "dependencies": {
         "extend": "^3.0.2",
         "https-proxy-agent": "^7.0.1",
-        "is-stream": "^2.0.0",
-        "node-fetch": "^2.6.9",
-        "uuid": "^9.0.1"
+        "node-fetch": "^3.3.2"
       },
       "engines": {
-        "node": ">=14"
+        "node": ">=18"
+      }
+    },
+    "node_modules/gaxios/node_modules/node-fetch": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-3.3.2.tgz",
+      "integrity": "sha512-dRB78srN/l6gqWulah9SrxeYnxeddIG30+GOqK/9OlLVyLg3HPnr6SqOWTWOXKRwC2eGYCkZ59NNuSgvSrpgOA==",
+      "license": "MIT",
+      "dependencies": {
+        "data-uri-to-buffer": "^4.0.0",
+        "fetch-blob": "^3.1.4",
+        "formdata-polyfill": "^4.0.10"
+      },
+      "engines": {
+        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/node-fetch"
       }
     },
     "node_modules/gcp-metadata": {
@@ -1855,6 +1854,36 @@
         "node": ">=14"
       }
     },
+    "node_modules/gcp-metadata/node_modules/gaxios": {
+      "version": "6.7.1",
+      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-6.7.1.tgz",
+      "integrity": "sha512-LDODD4TMYx7XXdpwxAVRAIAuB0bzv0s+ywFonY46k126qzQHT9ygyoa9tncmOiQmmDrik65UYsEkv3lbfqQ3yQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "extend": "^3.0.2",
+        "https-proxy-agent": "^7.0.1",
+        "is-stream": "^2.0.0",
+        "node-fetch": "^2.6.9",
+        "uuid": "^9.0.1"
+      },
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/gcp-metadata/node_modules/uuid": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.1.tgz",
+      "integrity": "sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==",
+      "deprecated": "uuid@10 and below is no longer supported.  For ESM codebases, update to uuid@latest.  For CommonJS codebases, use uuid@11 (but be aware this version will likely be deprecated in 2028).",
+      "funding": [
+        "https://github.com/sponsors/broofa",
+        "https://github.com/sponsors/ctavan"
+      ],
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/get-intrinsic": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.3.0.tgz",
@@ -1922,6 +1951,36 @@
         "node": ">=14"
       }
     },
+    "node_modules/google-auth-library/node_modules/gaxios": {
+      "version": "6.7.1",
+      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-6.7.1.tgz",
+      "integrity": "sha512-LDODD4TMYx7XXdpwxAVRAIAuB0bzv0s+ywFonY46k126qzQHT9ygyoa9tncmOiQmmDrik65UYsEkv3lbfqQ3yQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "extend": "^3.0.2",
+        "https-proxy-agent": "^7.0.1",
+        "is-stream": "^2.0.0",
+        "node-fetch": "^2.6.9",
+        "uuid": "^9.0.1"
+      },
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/google-auth-library/node_modules/uuid": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.1.tgz",
+      "integrity": "sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==",
+      "deprecated": "uuid@10 and below is no longer supported.  For ESM codebases, update to uuid@latest.  For CommonJS codebases, use uuid@11 (but be aware this version will likely be deprecated in 2028).",
+      "funding": [
+        "https://github.com/sponsors/broofa",
+        "https://github.com/sponsors/ctavan"
+      ],
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/google-logging-utils": {
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/google-logging-utils/-/google-logging-utils-0.0.2.tgz",
@@ -1956,6 +2015,36 @@
         "node": ">=14.0.0"
       }
     },
+    "node_modules/gtoken/node_modules/gaxios": {
+      "version": "6.7.1",
+      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-6.7.1.tgz",
+      "integrity": "sha512-LDODD4TMYx7XXdpwxAVRAIAuB0bzv0s+ywFonY46k126qzQHT9ygyoa9tncmOiQmmDrik65UYsEkv3lbfqQ3yQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "extend": "^3.0.2",
+        "https-proxy-agent": "^7.0.1",
+        "is-stream": "^2.0.0",
+        "node-fetch": "^2.6.9",
+        "uuid": "^9.0.1"
+      },
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/gtoken/node_modules/uuid": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.1.tgz",
+      "integrity": "sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==",
+      "deprecated": "uuid@10 and below is no longer supported.  For ESM codebases, update to uuid@latest.  For CommonJS codebases, use uuid@11 (but be aware this version will likely be deprecated in 2028).",
+      "funding": [
+        "https://github.com/sponsors/broofa",
+        "https://github.com/sponsors/ctavan"
+      ],
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/has-flag": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
@@ -2753,67 +2842,6 @@
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       }
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-    "node_modules/mongoose/node_modules/agent-base": {
-      "version": "6.0.2",
-      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
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-      "license": "MIT",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "debug": "4"
-      },
-      "engines": {
-        "node": ">= 6.0.0"
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-    },
-    "node_modules/mongoose/node_modules/gaxios": {
-      "version": "5.1.3",
-      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-5.1.3.tgz",
-      "integrity": "sha512-95hVgBRgEIRQQQHIbnxBXeHbW4TqFk4ZDJW7wmVtvYar72FdhRIo1UGOLS2eRAKCPEdPBWu+M7+A33D9CdX9rA==",
-      "license": "Apache-2.0",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "extend": "^3.0.2",
-        "https-proxy-agent": "^5.0.0",
-        "is-stream": "^2.0.0",
-        "node-fetch": "^2.6.9"
-      },
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/mongoose/node_modules/gcp-metadata": {
-      "version": "5.3.0",
-      "resolved": "https://registry.npmjs.org/gcp-metadata/-/gcp-metadata-5.3.0.tgz",
-      "integrity": "sha512-FNTkdNEnBdlqF2oatizolQqNANMrcqJt6AAYt99B3y1aLLC8Hc5IOBb+ZnnzllodEEf6xMBp6wRcBbc16fa65w==",
-      "license": "Apache-2.0",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "gaxios": "^5.0.0",
-        "json-bigint": "^1.0.0"
-      },
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/mongoose/node_modules/https-proxy-agent": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
-      "integrity": "sha512-dFcAjpTQFgoLMzC2VwU+C/CbS7uRL0lWmxDITmqm7C+7F0Odmj6s9l6alZc6AELXhrnggM2CeWSXHGOdX2YtwA==",
-      "license": "MIT",
-      "optional": true,
-      "peer": true,
-      "dependencies": {
-        "agent-base": "6",
-        "debug": "4"
-      },
-      "engines": {
-        "node": ">= 6"
-      }
-    },
     "node_modules/mongoose/node_modules/mongodb": {
       "version": "6.20.0",
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@@ -2989,6 +3017,26 @@
         "node": ">= 8.0.0"
       }
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+    "node_modules/node-domexception": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/node-domexception/-/node-domexception-1.0.0.tgz",
+      "integrity": "sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ==",
+      "deprecated": "Use your platform's native DOMException instead",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/jimmywarting"
+        },
+        {
+          "type": "github",
+          "url": "https://paypal.me/jimmywarting"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.5.0"
+      }
+    },
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       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.7.0.tgz",
@@ -3171,19 +3219,6 @@
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-      "resolved": "https://registry.npmjs.org/peek-readable/-/peek-readable-5.4.2.tgz",
-      "integrity": "sha512-peBp3qZyuS6cNIJ2akRNG1uo1WJ1d0wTxg/fxMdZ0BqCVhx242bSFHM9eNqflfJVS9SsgkzgT/1UgnsurBOTMg==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=14.16"
-      },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/Borewit"
-      }
-    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -3239,15 +3274,6 @@
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-    "node_modules/process": {
-      "version": "0.11.10",
-      "resolved": "https://registry.npmjs.org/process/-/process-0.11.10.tgz",
-      "integrity": "sha512-cdGef/drWFoydD1JsMzuFf8100nZl+GT+yacc2bEced5f9Rjk4z+WtFUTBu9PhOi9j/jfmBPu0mMEY4wIdAF8A==",
-      "license": "MIT",
-      "engines": {
-        "node": ">= 0.6.0"
-      }
-    },
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       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
@@ -3339,38 +3365,6 @@
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-    "node_modules/readable-web-to-node-stream": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/readable-web-to-node-stream/-/readable-web-to-node-stream-3.0.4.tgz",
-      "integrity": "sha512-9nX56alTf5bwXQ3ZDipHJhusu9NTQJ/CVPtb/XHAJCXihZeitfJvIRS4GqQ/mfIoOE3IelHMrpayVrosdHBuLw==",
-      "license": "MIT",
-      "dependencies": {
-        "readable-stream": "^4.7.0"
-      },
-      "engines": {
-        "node": ">=8"
-      },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/Borewit"
-      }
-    },
-    "node_modules/readable-web-to-node-stream/node_modules/readable-stream": {
-      "version": "4.7.0",
-      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-4.7.0.tgz",
-      "integrity": "sha512-oIGGmcpTLwPga8Bn6/Z75SVaH1z5dUut2ibSyAMVhmUggWpmDn2dapB0n7f8nwaSiRtepAsfJyfXIO5DCVAODg==",
-      "license": "MIT",
-      "dependencies": {
-        "abort-controller": "^3.0.0",
-        "buffer": "^6.0.3",
-        "events": "^3.3.0",
-        "process": "^0.11.10",
-        "string_decoder": "^1.3.0"
-      },
-      "engines": {
-        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
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-    },
     "node_modules/readdirp": {
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       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
@@ -3704,16 +3698,15 @@
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     "node_modules/strtok3": {
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-      "resolved": "https://registry.npmjs.org/strtok3/-/strtok3-7.1.1.tgz",
-      "integrity": "sha512-mKX8HA/cdBqMKUr0MMZAFssCkIGoZeSCMXgnt79yKxNFguMLVFgRe6wB+fsL0NmoHDbeyZXczy7vEPSoo3rkzg==",
+      "version": "10.3.5",
+      "resolved": "https://registry.npmjs.org/strtok3/-/strtok3-10.3.5.tgz",
+      "integrity": "sha512-ki4hZQfh5rX0QDLLkOCj+h+CVNkqmp/CMf8v8kZpkNVK6jGQooMytqzLZYUVYIZcFZ6yDB70EfD8POcFXiF5oA==",
       "license": "MIT",
       "dependencies": {
-        "@tokenizer/token": "^0.3.0",
-        "peek-readable": "^5.1.3"
+        "@tokenizer/token": "^0.3.0"
       },
       "engines": {
-        "node": ">=16"
+        "node": ">=18"
       },
       "funding": {
         "type": "github",
@@ -3867,11 +3860,12 @@
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     "node_modules/token-types": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/token-types/-/token-types-5.0.1.tgz",
-      "integrity": "sha512-Y2fmSnZjQdDb9W4w4r1tswlMHylzWIeOKpx0aZH9BgGtACHhrk3OkT52AzwcuqTRBZtvvnTjDBh8eynMulu8Vg==",
+      "version": "6.1.2",
+      "resolved": "https://registry.npmjs.org/token-types/-/token-types-6.1.2.tgz",
+      "integrity": "sha512-dRXchy+C0IgK8WPC6xvCHFRIWYUbqqdEIKPaKo/AcTUNzwLTK6AH7RjdLWsEZcAN/TBdtfUw3PYEgPr5VPr6ww==",
       "license": "MIT",
       "dependencies": {
+        "@borewit/text-codec": "^0.2.1",
         "@tokenizer/token": "^0.3.0",
         "ieee754": "^1.2.1"
       },
@@ -3927,6 +3921,18 @@
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       "license": "MIT"
     },
+    "node_modules/uint8array-extras": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/uint8array-extras/-/uint8array-extras-1.5.0.tgz",
+      "integrity": "sha512-rvKSBiC5zqCCiDZ9kAOszZcDvdAHwwIKJG33Ykj43OKcWsnmcBRL09YTU4nOeHZ8Y2a7l1MgTd08SBe9A8Qj6A==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/undefsafe": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.5.tgz",
@@ -3950,16 +3956,17 @@
       "license": "MIT"
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     "node_modules/uuid": {
-      "version": "9.0.1",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.1.tgz",
-      "integrity": "sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==",
+      "version": "14.0.1",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-14.0.1.tgz",
+      "integrity": "sha512-6ZxzVpzDXDa3bJWaHilVayA+BH/1zmxCJoVgvmqJnid/gPoKHxUrS/aC/T6LGQtNHT+XHG9fXPJB4d+IrU30Ew==",
+      "dev": true,
       "funding": [
         "https://github.com/sponsors/broofa",
         "https://github.com/sponsors/ctavan"
       ],
       "license": "MIT",
       "bin": {
-        "uuid": "dist/bin/uuid"
+        "uuid": "dist-node/bin/uuid"
       }
     },
     "node_modules/vary": {
@@ -4165,6 +4172,15 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
+    "node_modules/web-streams-polyfill": {
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.3.3.tgz",
+      "integrity": "sha512-d2JWLCivmZYTSIoge9MsgFCZrt571BikcWGYkjC1khllbTeDlGqZ2D8vD8E/lJa8WGWbb7Plm8/XJYV7IJHZZw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 8"
+      }
+    },
     "node_modules/webidl-conversions": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
diff --git a/backend/package.json b/backend/package.json
index b87603fb..3dad5ca5 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -11,6 +11,11 @@
   "author": "",
   "license": "ISC",
   "description": "",
+  "overrides": {
+    "gaxios": {
+      "uuid": ">=11.1.1"
+    }
+  },
   "dependencies": {
     "@google/genai": "^1.16.0",
     "@google/generative-ai": "^0.21.0",
@@ -21,8 +26,9 @@
     "dotenv": "^17.2.1",
     "express": "^5.1.0",
     "express-rate-limit": "^8.2.1",
-    "file-type": "^18.5.0",
+    "file-type": "^22.0.1",
     "form-data": "^4.0.5",
+    "gaxios": "^7.3.0",
     "helmet": "^8.3.0",
     "joi": "^18.0.2",
     "jsonwebtoken": "^9.0.2",
@@ -37,6 +43,7 @@
   "devDependencies": {
     "nodemon": "^3.1.10",
     "supertest": "^7.2.2",
+    "uuid": "^14.0.1",
     "vitest": "^4.1.9"
   },
   "overrides": {