BOLT-1613: Admin cross-org invite mutation + UI

BOLT-1613: Allow inviting people to any org from admin.texturehq.com (super-admin-only tool). Branch: havoc/bolt-1613-admin-invite-any-org Backend (domains/identity): - New mutation `adminCreateInvitation(input: AdminCreateInvitationInput!): Invitation! @requireSuperAdmin` - typeDefs.graphql: add input AdminCreateInvitationInput { organizationId: ID!, email: String!, role: Role! } + mutation field - resolver at src/graphql/resolvers/invitation/mutations/adminCreateInvitation.ts, modeled on createInvitation.ts but: - no reliance on context.authenticationContext.claims.organization (comes from input.organizationId instead) - super-admin gating handled entirely by @requireSuperAdmin directive (see createOrganizationAffiliation.ts / enablePack.ts for the pattern) - reuse invitationService.create(...) (domains/identity/src/services/invitation/create.ts) passing organizationId from input, userId = caller's subjectId - writeAuditLog with action "invitation.adminCreate" - register in src/graphql/resolvers/mutation/index.ts - regenerate supergraph schema: cd domains/identity && yarn subgraph:print (writes infra/supergraph-gateway/schemas/identity.graphql) && yarn graphql:types:generate - add resolver test (auth-gating: non-super-admin rejected; happy path creates invitation + audit log) Frontend (apps/admin): - Add "Invite Member" UI to Members section of app/(shell)/organizations/[id]/page.tsx - New component e.g. components/InviteMemberDialog.tsx or inline form (follow AffiliatedOrganizationsManagement.tsx pattern: Select/TextField + Button, success/error Notice) - New hook hooks/useAdminInviteMember.ts wrapping the AdminCreateInvitation mutation (graphql() codegen tag like useOrganizationPacks.ts) - Role select: USER / ADMIN / VIEWER / OPERATOR (see Role enum, identity typeDefs.graphql ~line 1960) - Run codegen for admin app after backend schema lands: cd apps/admin && yarn graphql:types:generate (check package.json script name) Done when: lint+typecheck+tests pass locally; PR opened; CI green; DeepSource clean; Sergey-reviewed. Post PR link to Slack #bots-havoc thread.