diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index d18e68d..a0fdc08 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -15,7 +15,7 @@
         "@types/react-dom": "^19.2.3",
         "astro": "^5.16.6",
         "astro-sst": "^3.1.4",
-        "better-auth": "^1.4.10",
+        "better-auth": "^1.6.2",
         "lightweight-charts": "^5.1.0",
         "react": "^19.2.3",
         "react-dom": "^19.2.3",
@@ -404,10 +404,13 @@
       }
     },
     "node_modules/@better-auth/utils": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/@better-auth/utils/-/utils-0.3.0.tgz",
-      "integrity": "sha512-W+Adw6ZA6mgvnSnhOki270rwJ42t4XzSK6YWGF//BbVXL6SwCLWfyzBc1lN2m/4RM28KubdBKQ4X5VMoLRNPQw==",
-      "license": "MIT"
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@better-auth/utils/-/utils-0.4.0.tgz",
+      "integrity": "sha512-RpMtLUIQAEWMgdPLNVbIF5ON2mm+CH0U3rCdUCU1VyeAUui4m38DyK7/aXMLZov2YDjG684pS1D0MBllrmgjQA==",
+      "license": "MIT",
+      "dependencies": {
+        "@noble/hashes": "^2.0.1"
+      }
     },
     "node_modules/@better-fetch/fetch": {
       "version": "1.1.21",
@@ -1460,6 +1463,25 @@
         "url": "https://paulmillr.com/funding/"
       }
     },
+    "node_modules/@opentelemetry/api": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/@opentelemetry/api/-/api-1.9.1.tgz",
+      "integrity": "sha512-gLyJlPHPZYdAk1JENA9LeHejZe1Ti77/pTeFm/nMXmQH/HFZlcS/O2XJB+L8fkbrNSqhdtlvjBVjxwUYanNH5Q==",
+      "license": "Apache-2.0",
+      "peer": true,
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
+    "node_modules/@opentelemetry/semantic-conventions": {
+      "version": "1.41.1",
+      "resolved": "https://registry.npmjs.org/@opentelemetry/semantic-conventions/-/semantic-conventions-1.41.1.tgz",
+      "integrity": "sha512-/UhIkaZgPutTFmQ7RnIJGgDXZmtEJ7Dvi86xNTFWcnRxVRNk/aotsqDJYeEvDP+FSMB2SdW+pQzNMcWP0rwuNA==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=14"
+      }
+    },
     "node_modules/@oslojs/encoding": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@oslojs/encoding/-/encoding-1.1.0.tgz",
@@ -2176,6 +2198,60 @@
         "node": ">=14.0.0"
       }
     },
+    "node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@emnapi/core": {
+      "version": "1.7.1",
+      "inBundle": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@emnapi/wasi-threads": "1.1.0",
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@emnapi/runtime": {
+      "version": "1.7.1",
+      "inBundle": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@emnapi/wasi-threads": {
+      "version": "1.1.0",
+      "inBundle": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@napi-rs/wasm-runtime": {
+      "version": "1.1.0",
+      "inBundle": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@emnapi/core": "^1.7.1",
+        "@emnapi/runtime": "^1.7.1",
+        "@tybys/wasm-util": "^0.10.1"
+      }
+    },
+    "node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/@tybys/wasm-util": {
+      "version": "0.10.1",
+      "inBundle": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@tailwindcss/oxide-wasm32-wasi/node_modules/tslib": {
+      "version": "2.8.1",
+      "inBundle": true,
+      "license": "0BSD",
+      "optional": true
+    },
     "node_modules/@tailwindcss/oxide-win32-arm64-msvc": {
       "version": "4.1.18",
       "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-win32-arm64-msvc/-/oxide-win32-arm64-msvc-4.1.18.tgz",
@@ -2692,29 +2768,35 @@
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     },
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-      "resolved": "https://registry.npmjs.org/better-auth/-/better-auth-1.4.10.tgz",
-      "integrity": "sha512-0kqwEBJLe8eyFzbUspRG/htOriCf9uMLlnpe34dlIJGdmDfPuQISd4shShvUrvIVhPxsY1dSTXdXPLpqISYOYg==",
-      "license": "MIT",
-      "dependencies": {
-        "@better-auth/core": "1.4.10",
-        "@better-auth/telemetry": "1.4.10",
-        "@better-auth/utils": "0.3.0",
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/better-auth/-/better-auth-1.6.2.tgz",
+      "integrity": "sha512-5nqDAIj5xexmnk+GjjdrBknJCabi1mlvsVWJbxs4usHreao4vNdxIxINWDzCyDF9iDR1ildRZdXWSiYPAvTHhA==",
+      "license": "MIT",
+      "dependencies": {
+        "@better-auth/core": "1.6.2",
+        "@better-auth/drizzle-adapter": "1.6.2",
+        "@better-auth/kysely-adapter": "1.6.2",
+        "@better-auth/memory-adapter": "1.6.2",
+        "@better-auth/mongo-adapter": "1.6.2",
+        "@better-auth/prisma-adapter": "1.6.2",
+        "@better-auth/telemetry": "1.6.2",
+        "@better-auth/utils": "0.4.0",
         "@better-fetch/fetch": "1.1.21",
-        "@noble/ciphers": "^2.0.0",
-        "@noble/hashes": "^2.0.0",
-        "better-call": "1.1.7",
+        "@noble/ciphers": "^2.1.1",
+        "@noble/hashes": "^2.0.1",
+        "better-call": "1.3.5",
         "defu": "^6.1.4",
-        "jose": "^6.1.0",
-        "kysely": "^0.28.5",
-        "nanostores": "^1.0.1",
-        "zod": "^4.1.12"
+        "jose": "^6.1.3",
+        "kysely": "^0.28.14",
+        "nanostores": "^1.1.1",
+        "zod": "^4.3.6"
       },
       "peerDependencies": {
         "@lynx-js/react": "*",
         "@prisma/client": "^5.0.0 || ^6.0.0 || ^7.0.0",
         "@sveltejs/kit": "^2.0.0",
         "@tanstack/react-start": "^1.0.0",
+        "@tanstack/solid-start": "^1.0.0",
         "better-sqlite3": "^12.0.0",
         "drizzle-kit": ">=0.31.4",
         "drizzle-orm": ">=0.41.0",
@@ -2743,6 +2825,9 @@
         "@tanstack/react-start": {
           "optional": true
         },
+        "@tanstack/solid-start": {
+          "optional": true
+        },
         "better-sqlite3": {
           "optional": true
         },
@@ -2788,44 +2873,130 @@
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     },
     "node_modules/better-auth/node_modules/@better-auth/core": {
-      "version": "1.4.10",
-      "resolved": "https://registry.npmjs.org/@better-auth/core/-/core-1.4.10.tgz",
-      "integrity": "sha512-AThrfb6CpG80wqkanfrbN2/fGOYzhGladHFf3JhaWt/3/Vtf4h084T6PJLrDE7M/vCCGYvDI1DkvP3P1OB2HAg==",
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@better-auth/core/-/core-1.6.2.tgz",
+      "integrity": "sha512-nBftDp+eN1fwXor1O4KQorCXa0tJNDgpab7O1z4NcWUU+3faDpdzqLn5mbXZer2E8ZD4VhjqOfYZ041xnBF5NA==",
+      "license": "MIT",
       "dependencies": {
-        "@standard-schema/spec": "^1.0.0",
-        "zod": "^4.1.12"
+        "@opentelemetry/semantic-conventions": "^1.39.0",
+        "@standard-schema/spec": "^1.1.0",
+        "zod": "^4.3.6"
       },
       "peerDependencies": {
-        "@better-auth/utils": "0.3.0",
+        "@better-auth/utils": "0.4.0",
         "@better-fetch/fetch": "1.1.21",
-        "better-call": "1.1.7",
+        "@cloudflare/workers-types": ">=4",
+        "@opentelemetry/api": "^1.9.0",
+        "better-call": "1.3.5",
         "jose": "^6.1.0",
         "kysely": "^0.28.5",
         "nanostores": "^1.0.1"
+      },
+      "peerDependenciesMeta": {
+        "@cloudflare/workers-types": {
+          "optional": true
+        }
       }
     },
-    "node_modules/better-auth/node_modules/@better-auth/telemetry": {
-      "version": "1.4.10",
-      "resolved": "https://registry.npmjs.org/@better-auth/telemetry/-/telemetry-1.4.10.tgz",
-      "integrity": "sha512-Dq4XJX6EKsUu0h3jpRagX739p/VMOTcnJYWRrLtDYkqtZFg+sFiFsSWVcfapZoWpRSUGYX9iKwl6nDHn6Ju2oQ==",
-      "dependencies": {
-        "@better-auth/utils": "0.3.0",
-        "@better-fetch/fetch": "1.1.21"
+    "node_modules/better-auth/node_modules/@better-auth/drizzle-adapter": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@better-auth/drizzle-adapter/-/drizzle-adapter-1.6.2.tgz",
+      "integrity": "sha512-KawrNNuhgmpcc5PgLs6HesMckxCscz5J+BQ99iRmU1cLzG/A87IcydrmYtep+K8WHPN0HmZ/i4z/nOBCtxE2qA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@better-auth/core": "^1.6.2",
+        "@better-auth/utils": "0.4.0",
+        "drizzle-orm": ">=0.41.0"
+      },
+      "peerDependenciesMeta": {
+        "drizzle-orm": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/better-auth/node_modules/@better-auth/kysely-adapter": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@better-auth/kysely-adapter/-/kysely-adapter-1.6.2.tgz",
+      "integrity": "sha512-YMMm75jek/MNCAFWTAaq/U3VPmFnrwZW4NhBjjAwruHQJEIrSZZaOaUEXuUpFRRBhWqg7OOltQcHMwU/45CkuA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@better-auth/core": "^1.6.2",
+        "@better-auth/utils": "0.4.0",
+        "kysely": "^0.27.0 || ^0.28.0"
+      },
+      "peerDependenciesMeta": {
+        "kysely": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/better-auth/node_modules/@better-auth/memory-adapter": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@better-auth/memory-adapter/-/memory-adapter-1.6.2.tgz",
+      "integrity": "sha512-QvuK5m7NFgkzLPHyab+NORu3J683nj36Tix58qq6DPcniyY6KZk5gY2yyh4+z1wgSjrxwY5NFx/DC2qz8B8NJg==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@better-auth/core": "^1.6.2",
+        "@better-auth/utils": "0.4.0"
+      }
+    },
+    "node_modules/better-auth/node_modules/@better-auth/mongo-adapter": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@better-auth/mongo-adapter/-/mongo-adapter-1.6.2.tgz",
+      "integrity": "sha512-IvR2Q+1pjzxA4JXI3ED76+6fsqervIpZ2K5MxoX/+miLQhLEmNcbqqcItg4O2kfkxN8h33/ev57sjTW8QH9Tuw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@better-auth/core": "^1.6.2",
+        "@better-auth/utils": "0.4.0",
+        "mongodb": "^6.0.0 || ^7.0.0"
+      },
+      "peerDependenciesMeta": {
+        "mongodb": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/better-auth/node_modules/@better-auth/prisma-adapter": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@better-auth/prisma-adapter/-/prisma-adapter-1.6.2.tgz",
+      "integrity": "sha512-bQkXYTo1zPau+xAiMpo1yCjEDSy7i7oeYlkYO+fSfRDCo52DE/9oPOOuI+EStmFkPUNSk9L2rhk8Fulifi8WCg==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@better-auth/core": "^1.6.2",
+        "@better-auth/utils": "0.4.0",
+        "@prisma/client": "^5.0.0 || ^6.0.0 || ^7.0.0",
+        "prisma": "^5.0.0 || ^6.0.0 || ^7.0.0"
       },
+      "peerDependenciesMeta": {
+        "@prisma/client": {
+          "optional": true
+        },
+        "prisma": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/better-auth/node_modules/@better-auth/telemetry": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/@better-auth/telemetry/-/telemetry-1.6.2.tgz",
+      "integrity": "sha512-o4gHKXqizUxVUUYChZZTowLEzdsz3ViBE/fKFzfHqNFUnF+aVt8QsbLSfipq1WpTIXyJVT/SnH0hgSdWxdssbQ==",
+      "license": "MIT",
       "peerDependencies": {
-        "@better-auth/core": "1.4.10"
+        "@better-auth/core": "^1.6.2",
+        "@better-auth/utils": "0.4.0",
+        "@better-fetch/fetch": "1.1.21"
       }
     },
     "node_modules/better-auth/node_modules/better-call": {
-      "version": "1.1.7",
-      "resolved": "https://registry.npmjs.org/better-call/-/better-call-1.1.7.tgz",
-      "integrity": "sha512-6gaJe1bBIEgVebQu/7q9saahVzvBsGaByEnE8aDVncZEDiJO7sdNB28ot9I6iXSbR25egGmmZ6aIURXyQHRraQ==",
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/better-call/-/better-call-1.3.5.tgz",
+      "integrity": "sha512-kOFJkBP7utAQLEYrobZm3vkTH8mXq5GNgvjc5/XEST1ilVHaxXUXfeDeFlqoETMtyqS4+3/h4ONX2i++ebZrvA==",
       "license": "MIT",
       "dependencies": {
-        "@better-auth/utils": "^0.3.0",
-        "@better-fetch/fetch": "^1.1.4",
-        "rou3": "^0.7.10",
-        "set-cookie-parser": "^2.7.1"
+        "@better-auth/utils": "^0.4.0",
+        "@better-fetch/fetch": "^1.1.21",
+        "rou3": "^0.7.12",
+        "set-cookie-parser": "^3.0.1"
       },
       "peerDependencies": {
         "zod": "^4.0.0"
@@ -2836,10 +3007,16 @@
         }
       }
     },
+    "node_modules/better-auth/node_modules/set-cookie-parser": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-3.1.0.tgz",
+      "integrity": "sha512-kjnC1DXBHcxaOaOXBHBeRtltsDG2nUiUni+jP92M9gYdW12rsmx92UsfpH7o5tDRs7I1ZZPSQJQGv3UaRfCiuw==",
+      "license": "MIT"
+    },
     "node_modules/better-auth/node_modules/zod": {
-      "version": "4.3.5",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.5.tgz",
-      "integrity": "sha512-k7Nwx6vuWx1IJ9Bjuf4Zt1PEllcwe7cls3VNzm4CQ1/hgtFUK2bRNG3rvnpPUhFjmqJKAKtjV576KnUkHocg/g==",
+      "version": "4.4.3",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
+      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
@@ -3950,9 +4127,9 @@
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     },
     "node_modules/jose": {
-      "version": "6.1.3",
-      "resolved": "https://registry.npmjs.org/jose/-/jose-6.1.3.tgz",
-      "integrity": "sha512-0TpaTfihd4QMNwrz/ob2Bp7X04yuxJkjRGi4aKmOqwhov54i6u79oCv7T+C7lo70MKH6BesI3vscD1yb/yzKXQ==",
+      "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"
@@ -4010,9 +4187,9 @@
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     "node_modules/kysely": {
-      "version": "0.28.9",
-      "resolved": "https://registry.npmjs.org/kysely/-/kysely-0.28.9.tgz",
-      "integrity": "sha512-3BeXMoiOhpOwu62CiVpO6lxfq4eS6KMYfQdMsN/2kUCRNuF2YiEr7u0HLHaQU+O4Xu8YXE3bHVkwaQ85i72EuA==",
+      "version": "0.28.17",
+      "resolved": "https://registry.npmjs.org/kysely/-/kysely-0.28.17.tgz",
+      "integrity": "sha512-nbD8lB9EB3wNdMhOCdx5Li8DxnLbvKByylRLcJ1h+4SkrowVeECAyZlyiKMThF7xFdRz0jSQ2MoJr+wXux2y0Q==",
       "license": "MIT",
       "engines": {
         "node": ">=20.0.0"
@@ -5150,9 +5327,9 @@
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     "node_modules/nanostores": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/nanostores/-/nanostores-1.1.0.tgz",
-      "integrity": "sha512-yJBmDJr18xy47dbNVlHcgdPrulSn1nhSE6Ns9vTG+Nx9VPT6iV1MD6aQFp/t52zpf82FhLLTXAXr30NuCnxvwA==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/nanostores/-/nanostores-1.3.0.tgz",
+      "integrity": "sha512-XPUa/jz+P1oJvN9VBxw4L9MtdFfaH3DAryqPssqhb2kXjmb9npz0dly6rCsgFWOPr4Yg9mTfM3MDZgZZ+7A3lA==",
       "funding": [
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           "type": "github",
diff --git a/frontend/package.json b/frontend/package.json
index 535c395..9bfe053 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -16,7 +16,7 @@
     "@types/react-dom": "^19.2.3",
     "astro": "^5.16.6",
     "astro-sst": "^3.1.4",
-    "better-auth": "^1.4.10",
+    "better-auth": "^1.6.2",
     "lightweight-charts": "^5.1.0",
     "react": "^19.2.3",
     "react-dom": "^19.2.3",