feat(core, react): add schemas, i18n, and checkpoint pagination hook

[rax7389]

Changes

Summary: Adds Zod validation schemas, i18n translations, config types, and a reusable checkpoint pagination hook for the organization member management invitations feature. This is the foundational layer that all subsequent PRs build upon.

Why: The invitation feature requires well-defined schemas and translations before building UI components and hooks. Separating these into their own PR keeps the review focused. React types that depend on MemberInvitation from @auth0/myorganization-js are in PR 3.

What:

i18n Translations (core)

Added member_management translation keys in both en-US.json and ja.json covering all invitation flows — table columns, actions, create/revoke/details modals, success/error messages.

{
  "member_management": {
    "invitation": {
      "table": { "columns": { "email": "Email", "status": "Status", ... } },
      "actions": { "view_details": "View Details", "revoke": "Revoke Invitation", ... },
      "create": { "title": "Invite Member", "email_label": "Email Address", ... },
      "revoke": { "title": "Revoke Invitation", "description": "Are you sure...?", ... }
    }
  }
}

Zod Schemas (core)

• invitation-create-schema.ts — Factory function createInvitationCreateSchema() with customizable email regex, error messages, and max email limit (default 10).

const schema = createInvitationCreateSchema({
  email: { regex: /^[\w.+-]+@auth0\.com$/, errorMessage: "Only @auth0.com allowed" },
  maxEmails: 5,
});
schema.emailSchema.safeParse("user@auth0.com"); // { success: true }

• invitation-schema.ts — Zod schemas for invitationSchema, invitationListResponseSchema, createInvitationSchema, and revokeInvitationSchema.

• member-schema.ts — Zod schemas for memberSchema, memberListResponseSchema, and removeMemberSchema.

Schema Tests (core)

• invitation-create-schema.test.ts — comprehensive test suite covering valid/invalid emails, custom regex, custom error messages, and maxEmails configuration.

Config Types (react)

• config-types.ts — Added allowedRoles to config interface.

Shared Hook (react)

• use-checkpoint-pagination.ts — Reusable hook for cursor/checkpoint-based pagination with token stack management for navigating back through pages.

const { currentToken, hasNextPage, hasPreviousPage, goToNextPage, goToPreviousPage } = useCheckpointPagination({
  pageSize: 10,
  nextToken: response.next,
});

• use-checkpoint-pagination.test.ts — Test suite for the pagination hook covering token stack management, page navigation, and edge cases.

Exports

• Updated packages/core/src/schemas/my-organization/index.ts with new schema exports

References

Part of the member management invitations feature.

Testing

• This change adds unit test coverage (invitation-create-schema.test.ts, use-checkpoint-pagination.test.ts)
• This change has been tested on the latest version of the platform/language

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All existing and new tests complete without errors