* feat: add account deletion functionality with cascade delete for workspace relations
* fix: add cascade delete to workspace user foreign key constraints
* fix: change onDelete action to set null for user references in schema
* feat: tweak design
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Co-authored-by: Henry <henry_ball@hotmail.co.uk>
Co-authored-by: Henry <30578846+hjball@users.noreply.github.com>
* fix: add cascade delete for card-related foreign keys and invalidate workspace cache after deletion
* fix: use refetch instead of invalidate for workspace deletion to ensure immediate UI update
* feat: add cascade delete to card relations and activity tables
