[Dazzanova]

Summary

Fixes #645 : withValidator({ query }) now preserves repeated query parameters as arrays instead of keeping only the last value.

Changes

• Use Hono's c.req.queries() to retrieve query parameters, including repeated keys.
• Normalize single-value parameters to strings and repeated parameters to arrays.
• Add an integration test covering both single and repeated query parameters.

Expected Behavior

For GET /notes?page=2&tag=work&tag=urgent, the validated query is:

{
  page: '2',
  tag: ['work', 'urgent'],
}

Single-value query parameters retain their existing behavior.