diff --git a/backend/package.json b/backend/package.json
index 9b7f93d..0e57de7 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -37,7 +37,7 @@
     "pg": "^8.20.0",
     "redis": "^5.11.0",
     "socket.io": "^4.8.3",
-    "zod": "^4.3.6"
+    "zod": "^4.4.3"
   },
   "devDependencies": {
     "@eslint/js": "^10.0.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 828a314..ca7083e 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -76,8 +76,8 @@ importers:
         specifier: ^4.8.3
         version: 4.8.3
       zod:
-        specifier: ^4.3.6
-        version: 4.4.1
+        specifier: ^4.4.3
+        version: 4.4.3
     devDependencies:
       '@eslint/js':
         specifier: ^10.0.1
@@ -276,6 +276,11 @@ packages:
     engines: {node: '>=6.0.0'}
     hasBin: true
 
+  '@babel/parser@7.29.3':
+    resolution: {integrity: sha512-b3ctpQwp+PROvU/cttc4OYl4MzfJUWy6FZg+PMXfzmt/+39iHVF0sDfqay8TQM3JA2EUOyKcFZt75jWriQijsA==}
+    engines: {node: '>=6.0.0'}
+    hasBin: true
+
   '@babel/template@7.28.6':
     resolution: {integrity: sha512-YA6Ma2KsCdGb+WC6UpBVFJGXL58MDA6oyONbjyF/+5sBgxY/dwkhLogbMT2GXXyU84/IhRw/2D1Os1B/giz+BQ==}
     engines: {node: '>=6.9.0'}
@@ -840,42 +845,36 @@ packages:
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [arm64]
     os: [linux]
-    libc: [glibc]
 
   '@rolldown/binding-linux-arm64-musl@1.0.0-rc.17':
     resolution: {integrity: sha512-b/CgbwAJpmrRLp02RPfhbudf5tZnN9nsPWK82znefso832etkem8H7FSZwxrOI9djcdTP7U6YfNhbRnh7djErg==}
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [arm64]
     os: [linux]
-    libc: [musl]
 
   '@rolldown/binding-linux-ppc64-gnu@1.0.0-rc.17':
     resolution: {integrity: sha512-4EII1iNGRUN5WwGbF/kOh/EIkoDN9HsupgLQoXfY+D1oyJm7/F4t5PYU5n8SWZgG0FEwakyM8pGgwcBYruGTlA==}
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [ppc64]
     os: [linux]
-    libc: [glibc]
 
   '@rolldown/binding-linux-s390x-gnu@1.0.0-rc.17':
     resolution: {integrity: sha512-AH8oq3XqQo4IibpVXvPeLDI5pzkpYn0WiZAfT05kFzoJ6tQNzwRdDYQ45M8I/gslbodRZwW8uxLhbSBbkv96rA==}
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [s390x]
     os: [linux]
-    libc: [glibc]
 
   '@rolldown/binding-linux-x64-gnu@1.0.0-rc.17':
     resolution: {integrity: sha512-cLnjV3xfo7KslbU41Z7z8BH/E1y5mzUYzAqih1d1MDaIGZRCMqTijqLv76/P7fyHuvUcfGsIpqCdddbxLLK9rA==}
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [x64]
     os: [linux]
-    libc: [glibc]
 
   '@rolldown/binding-linux-x64-musl@1.0.0-rc.17':
     resolution: {integrity: sha512-0phclDw1spsL7dUB37sIARuis2tAgomCJXAHZlpt8PXZ4Ba0dRP1e+66lsRqrfhISeN9bEGNjQs+T/Fbd7oYGw==}
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [x64]
     os: [linux]
-    libc: [musl]
 
   '@rolldown/binding-openharmony-arm64@1.0.0-rc.17':
     resolution: {integrity: sha512-0ag/hEgXOwgw4t8QyQvUCxvEg+V0KBcA6YuOx9g0r02MprutRF5dyljgm3EmR02O292UX7UeS6HzWHAl6KgyhA==}
@@ -959,28 +958,24 @@ packages:
     engines: {node: '>= 20'}
     cpu: [arm64]
     os: [linux]
-    libc: [glibc]
 
   '@tailwindcss/oxide-linux-arm64-musl@4.2.4':
     resolution: {integrity: sha512-bBADEGAbo4ASnppIziaQJelekCxdMaxisrk+fB7Thit72IBnALp9K6ffA2G4ruj90G9XRS2VQ6q2bCKbfFV82g==}
     engines: {node: '>= 20'}
     cpu: [arm64]
     os: [linux]
-    libc: [musl]
 
   '@tailwindcss/oxide-linux-x64-gnu@4.2.4':
     resolution: {integrity: sha512-7Mx25E4WTfnht0TVRTyC00j3i0M+EeFe7wguMDTlX4mRxafznw0CA8WJkFjWYH5BlgELd1kSjuU2JiPnNZbJDA==}
     engines: {node: '>= 20'}
     cpu: [x64]
     os: [linux]
-    libc: [glibc]
 
   '@tailwindcss/oxide-linux-x64-musl@4.2.4':
     resolution: {integrity: sha512-2wwJRF7nyhOR0hhHoChc04xngV3iS+akccHTGtz965FwF0up4b2lOdo6kI1EbDaEXKgvcrFBYcYQQ/rrnWFVfA==}
     engines: {node: '>= 20'}
     cpu: [x64]
     os: [linux]
-    libc: [musl]
 
   '@tailwindcss/oxide-wasm32-wasi@4.2.4':
     resolution: {integrity: sha512-FQsqApeor8Fo6gUEklzmaa9994orJZZDBAlQpK2Mq+DslRKFJeD6AjHpBQ0kZFQohVr8o85PPh8eOy86VlSCmw==}
@@ -2025,28 +2020,24 @@ packages:
     engines: {node: '>= 12.0.0'}
     cpu: [arm64]
     os: [linux]
-    libc: [glibc]
 
   lightningcss-linux-arm64-musl@1.32.0:
     resolution: {integrity: sha512-UpQkoenr4UJEzgVIYpI80lDFvRmPVg6oqboNHfoH4CQIfNA+HOrZ7Mo7KZP02dC6LjghPQJeBsvXhJod/wnIBg==}
     engines: {node: '>= 12.0.0'}
     cpu: [arm64]
     os: [linux]
-    libc: [musl]
 
   lightningcss-linux-x64-gnu@1.32.0:
     resolution: {integrity: sha512-V7Qr52IhZmdKPVr+Vtw8o+WLsQJYCTd8loIfpDaMRWGUZfBOYEJeyJIkqGIDMZPwPx24pUMfwSxxI8phr/MbOA==}
     engines: {node: '>= 12.0.0'}
     cpu: [x64]
     os: [linux]
-    libc: [glibc]
 
   lightningcss-linux-x64-musl@1.32.0:
     resolution: {integrity: sha512-bYcLp+Vb0awsiXg/80uCRezCYHNg1/l3mt0gzHnWV9XP1W5sKa5/TCdGWaR/zBM2PeF/HbsQv/j2URNOiVuxWg==}
     engines: {node: '>= 12.0.0'}
     cpu: [x64]
     os: [linux]
-    libc: [musl]
 
   lightningcss-win32-arm64-msvc@1.32.0:
     resolution: {integrity: sha512-8SbC8BR40pS6baCM8sbtYDSwEVQd4JlFTOlaD3gWGHfThTcABnNDBda6eTZeqbofalIJhFx0qKzgHJmcPTnGdw==}
@@ -2881,8 +2872,8 @@ packages:
     peerDependencies:
       zod: ^3.25.0 || ^4.0.0
 
-  zod@4.4.1:
-    resolution: {integrity: sha512-a6ENMBBGZBsnlSebQ/eKCguSBeGKSf4O7BPnqVPmYGtpBYI7VSqoVqw+QcB7kPRjbqPwhYTpFbVj/RqNz/CT0Q==}
+  zod@4.4.3:
+    resolution: {integrity: sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==}
 
 snapshots:
 
@@ -2963,6 +2954,11 @@ snapshots:
     dependencies:
       '@babel/types': 7.29.0
 
+  '@babel/parser@7.29.3':
+    dependencies:
+      '@babel/types': 7.29.0
+    optional: true
+
   '@babel/template@7.28.6':
     dependencies:
       '@babel/code-frame': 7.29.0
@@ -4260,8 +4256,8 @@ snapshots:
       '@babel/parser': 7.29.2
       eslint: 10.1.0(jiti@2.6.1)
       hermes-parser: 0.25.1
-      zod: 4.4.1
-      zod-validation-error: 4.0.2(zod@4.4.1)
+      zod: 4.4.3
+      zod-validation-error: 4.0.2(zod@4.4.3)
     transitivePeerDependencies:
       - supports-color
 
@@ -4687,7 +4683,7 @@ snapshots:
 
   magicast@0.3.5:
     dependencies:
-      '@babel/parser': 7.29.2
+      '@babel/parser': 7.29.3
       '@babel/types': 7.29.0
       source-map-js: 1.2.1
     optional: true
@@ -5432,8 +5428,8 @@ snapshots:
       grammex: 3.1.12
       graphmatch: 1.1.1
 
-  zod-validation-error@4.0.2(zod@4.4.1):
+  zod-validation-error@4.0.2(zod@4.4.3):
     dependencies:
-      zod: 4.4.1
+      zod: 4.4.3
 
-  zod@4.4.1: {}
+  zod@4.4.3: {}