Adds an in-memory, IP-based fixed-window rate limit (max 3 req/hour)
to app/api/familyguard-flyer/route.ts to mitigate an email-spam/abuse
vector where any client could trigger outbound emails and DB inserts
with no limit. Also guards against a non-string `email` field in the
request body, which previously threw an uncaught TypeError (HTTP 500)
instead of the intended 400 validation response.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhY1QhDXGWfyhrxaJvfpNt
MBO-Tech-IT
60af2e1621