Search handles errors with user-facing message, not raw error or empty list

A blank page or raw stack trace on a search error tells users nothing actionable and exposes internal implementation details — error messages containing TypeError: Cannot read property of undefined or Prisma stack traces reveal your ORM, schema, and query structure. Under ISO 25010:2011 reliability, an application that silently drops into an empty state on network failure or backend error leaves users unable to distinguish "no results" from "broken search" — and they'll assume the latter, blame the product, and leave.

Wrap the search fetch in try/catch and render a non-technical error message when the request fails. In components/SearchInput.tsx:

try {
  const res = await fetch(`/api/listings?q=${encodeURIComponent(query)}`)
  if (!res.ok) throw new Error('non-2xx')
  const data = await res.json()
  setResults(data.listings)
} catch {
  setError('Search is temporarily unavailable. Please try again.')
}

// In render:
{error && (
  <div role="alert" className="bg-red-50 border border-red-200 p-4 rounded">
    {error}
  </div>
)}

Log the original error to the server (not to the client). Never render err.message directly — it will contain stack traces or ORM internals.

• ID: error-handling

• Severity: medium

• What to look for: Enumerate all relevant files and Intentionally trigger a search error (if possible — e.g., search for a term that causes a backend error, or simulate a network failure in dev tools). Check whether the UI displays a user-friendly error message (e.g., "Search temporarily unavailable. Please try again.") instead of showing nothing, a blank page, or a technical error stack trace.

• Pass criteria: At least 1 conforming pattern must exist. Search errors result in a clear, user-friendly error message (not a stack trace or empty list). A suggestion to retry or try different terms may be provided.

• Fail criteria: Search errors show a blank page, technical stack trace, or raw error message.

• Skip (N/A) when: Search is not implemented or error states are not testable. Signal: no search functionality found.

• Detail on fail: "Search error causes blank page with no error message." or "Raw API error shown to user: 'TypeError: Cannot read property of undefined'."

• Remediation: Wrap search API calls in error handling:

  // components/SearchInput.tsx
  const handleSearch = async (query) => {
    setLoading(true)
    setError(null)
    try {
      const res = await fetch(`/api/listings?q=${encodeURIComponent(query)}`)
      if (!res.ok) throw new Error('Search failed')
      const data = await res.json()
      setResults(data.listings)
    } catch (err) {
      setError('Search is temporarily unavailable. Please try again.')
      console.error('Search error:', err) // log for debugging
    } finally {
      setLoading(false)
    }
  }
  
  // In render:
  {error && (
    <div className="bg-red-50 border border-red-200 p-4 rounded">
      {error}
    </div>
  )}