fix: remove duplicate /edit/[token] page that conflicted with existing route

The pre-existing app/edit/[token]/page.tsx (server-rendered, uses EditCaseForm)
was already the correct implementation. Removed my duplicate (public)/edit/[token]
pages that caused a route conflict at build time. Added metadata to the original.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: royalpinto007