Schema (Prisma): three new public-schema models per ADR-0027 -
Region (INSEE code PK), Delegation (dept code PK + regionCode FK),
Structure (portal-internal code PK + kind discriminator + nullable
unique finess/siret/codePaie + nullable delegationCode FK).
Migration: hand-written, matches the style of init_audit_schema and
users_directory. DDL + CHECK constraint on Structure.kind mirroring
STRUCTURE_KINDS + indexes + inline seed (Region 75 Nouvelle-Aquitaine,
Delegation 33 Gironde, structures 0330800013 + 0330800021 medico-social
Bordeaux/Merignac + siege APF national). Seed is the minimum the 19
test-tenant personas reference; ADR-0029's cascade sync supersedes it
when it ships.
Catalogue (TypeScript): apps/portal-bff/src/structures/structure-kind.ts
exports STRUCTURE_KINDS as const + StructureKind type union +
isStructureKind type guard. Jest spec covers catalogue content,
type guard, narrowing.
Drift gate: extended to scan property-literal "kind: 'X'" expressions
in files that import from structure-kind.ts. Three-layer defense
in depth for Structure.kind = TS type union + Postgres CHECK +
CI gate. 22 spec tests passing.
No consumer code yet - PrismaScopeResolver that dereferences
Structure.code from UserScope.value lives in ADR-0026 PR 2, which
depends on this PR landing first.
Reviewer heads-up: schema.prisma already has a User model (ADR-0020
user-directory cache); ADR-0026 PR 1 introduces a different User
(UUID PK + Person FK). Naming collision flagged for that PR to
resolve - not touched here.
Julien Gautier