Org Memberships, Invite Deep Links & Campaign Details

New Features

Adds a dedicated Org Memberships page giving organizations a centralized view of their foundation membership status, including per-foundation membership details and tier information.
Introduces invite deep link support for users without an existing LF account — recipients follow a secure link, create or sign in to an LF account via Auth0, and are automatically redirected to the intended destination. Expired or invalid links display a clear, actionable error message.
Platform rows in the Performance Marketing tab are now expandable, revealing campaign-level details — including spend, revenue, and ROAS — grouped by advertising channel, consistent with the existing project row expansion pattern.

Fixes an issue where adding or editing a committee member would fail with an error when the organization field was not populated, preventing a confusing raw error from being surfaced to administrators.