Hub 0.3.0 renames the `user_identifier` API field to `user_id` (breaking
change). This commit bumps the Hub Docker image, upgrades the
@formbricks/hub TypeScript SDK from 0.4.3 to 0.5.0, and renames every
`user_identifier` reference in Zod schemas, server actions, transform
pipeline, form components, CubeJS schema, connector types, and seed data
to match the new API contract.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Bhagya Amarasinghe