refactor: extract useScanner hook from page.tsx

.claude/settings.local.json

@@ -64,7 +64,9 @@
       "Bash(curl -v http://localhost:8906/users)",
       "Bash(NEXT_PUBLIC_API_URL=http://localhost:8916 npm run dev -- --port 8917)",
       "Bash(curl -sf http://localhost:8917)",
-      "Bash(xargs sed *)"
+      "Bash(xargs sed *)",
+      "Bash(sed -i -e 's/\\\\btext-slate-100\\\\b/text-secondary/g' -e s/placeholder:text-slate-700/placeholder:text-muted/g -e s/hover:text-slate-300/hover:text-secondary/g app/page.tsx)",
+      "Bash(sed -i 's/\\\\btext-slate-300\\\\b/text-secondary/g' app/page.tsx)"
     ]
   }
 }