Fix: Update pagination and select component styles for improved layout and consistency.

Author: ChanningHe

frontend/src/components/ui/pagination.tsx

@@ -97,7 +97,7 @@ export function Pagination({
                     value={pageSize.toString()}
                     onChange={(value: string) => onPageSizeChange(Number(value))}
                     options={pageSizeSelectOptions}
-                    className="w-[70px] h-full"
+                    className="w-[70px] h-8 [&>button]:h-full [&>button]:py-0"
                 />
             </div>
         </div>

frontend/src/components/ui/select.tsx

@@ -40,7 +40,7 @@ export function Select({ value, onChange, options, placeholder, className }: Sel
         type="button"
         onClick={() => setIsOpen(!isOpen)}
         className={cn(
-          'w-full h-full flex items-center justify-between px-2 text-xs',
+          'w-full flex items-center justify-between px-2 py-2.5 text-xs',
           'bg-background border rounded-md',
           'hover:bg-accent transition-colors',
           'focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2'