* feat: add @repo/funnel package for shared hear-about constants
Single source of truth for the "How did you first hear about Logos?"
question, options, and id -> label map used by apps/web and apps/civi-crm.
* feat: map hear-about answer to a Notion select on intake
Unknown option ids are dropped so tampering cannot create new select
options; field defs without a CiviCRM fieldName are skipped in
buildAfformValues so the Afform payload is unchanged.
* feat: add required hear-about field to the three funnel forms
Injected below the chat name/service row on coalition-partner,
activist-builder and activist-leader-steward. Web/Notion-only: defs
without a fieldName are filtered out of the CiviCRM fields payload.
* docs: document hear-about field in funnel reference
* refactor: extract resolveHearAboutLabel from Notion builder
Share the option-id -> label resolution so the route can reuse the
builder's exact accept/write predicate.
* fix: enforce required hear-about field server-side
Reject funnel submissions whose hear-about answer is missing or not a
known option id, instead of relying on client-side validation alone.
