Review #689: the CTA fallback was a throwaway address (settings.contact_email,
a Nominatim User-Agent contact — NOT a lead inbox). Unset env on first deploy →
client's заявка with PII drafts to a stranger, lead silently lost.
Fix: CONTACT_EMAIL = env only (trimmed, no fallback); render the «Оставить заявку»
CTA ONLY when leadEnabled (email configured). PDF + transparency unaffected.
tsc clean.