chore(deps): upgrade @mantine/hooks to v9

v9 splits useFullscreen into useFullscreenElement (ref-based) and
useFullscreenDocument. NavigationMenu never attached the ref, and v8's
useFullscreen fell back to document.documentElement in that case, so
useFullscreenDocument is a behaviourally identical swap.

Every other hook in use is unaffected. The one other breaking change —
useLocalStorage/useSessionStorage now return `T | undefined` when no
defaultValue is given — does not apply: all nine call sites pass one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NWs1vf42msmoJ21ABvQMpm

pnpm-lock.yaml

@@ -86,8 +86,8 @@ importers:
         specifier: ^5.2.7
         version: 5.2.7
       '@mantine/hooks':
-        specifier: ^8.3.7
-        version: 8.3.7(react@19.2.7)
+        specifier: ^9.5.1
+        version: 9.5.1(react@19.2.7)
       '@sentry/react':
         specifier: ^10.59.0
         version: 10.59.0(react@19.2.7)
@@ -1228,10 +1228,10 @@ packages:
     resolution: {integrity: sha512-9QOtNffcOF/c1seMCDnjckb3R9WHcG34tky+FHpNKKCW0wc/scYLwMtO+ptyGUfMW0/b/n4qRiALlaFHc9Oj7Q==}
     engines: {node: '>= 10.0.0'}
 
-  '@mantine/hooks@8.3.7':
-    resolution: {integrity: sha512-2xnKS8C6fTzMoq1dtOJGrh2bIBuWnVrijL/DsDk60UaUgbABh8zScwU5ndX+p02ds2bebo34LovscP9fH38uPg==}
+  '@mantine/hooks@9.5.1':
+    resolution: {integrity: sha512-2sK9OdWvrzKBOuWxLfQA5qcAJzxpzqNlKumaP7Uq0i7LDBQeY/sYgNiBWLwtW+iZw6fFXwPf0nI7q5VVpvqnNQ==}
     peerDependencies:
-      react: ^18.x || ^19.x
+      react: ^19.2.0
 
   '@marijn/find-cluster-break@1.0.2':
     resolution: {integrity: sha512-l0h88YhZFyKdXIFNfSWpyjStDjGHwZ/U7iobcK1cQQD8sejsONdQtTVU+1wVN1PBw40PiiHB1vA5S7VTfQiP9g==}
@@ -5970,7 +5970,7 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@mantine/hooks@8.3.7(react@19.2.7)':
+  '@mantine/hooks@9.5.1(react@19.2.7)':
     dependencies:
       react: 19.2.7