Connecting a Pool Profile no longer overwrites the pool's pool_id. The pool is
switched only when the user actively selects a profile in the dropdown; picking
an empty profile while a pool with images is connected offers to copy those
images into it (new seed_profile op + /grid_pool/profiles/seed route), so the
current pool is never silently lost.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Ethanfel