Julien Gautier
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ADR-0025 left several anchors as proposed-follow-up: - Principal.user.id / personId carry the Entra oid as a placeholder. - StubScopeResolver returns unrestricted for everyone. - @RequireScope's ScopableResource shape references an Etablissement / Delegation / Region chain that has no table. ADR-0026 specifies the portal-side data model that closes those stubs without dragging the upstream Pléiades / Acteurs+ syncs into scope: - Person golden record (stable identity; lazy-created on first sign-in in v1, source-stamped 'self-signin' for traceability). - User overlay (one-to-zero-or-one with Person; portal-only state like lastSignInAt rides here, not on the shared Person row). - UserScope migration confirming the ADR-0025 §"Sources of truth" shape. - Region / Delegation / Etablissement hierarchy with externally-meaningful codes (INSEE / dept / FINESS) as primary keys, matching scope literals' on-the-wire shape. Facet schemas (Salarié / Élu / Adhérent / Bénéficiaire) are deferred to ADR-0027 alongside the Pléiades and Acteurs+ sync that populates them - keeping the v1 migration small enough to land + roll back cleanly. Status: proposed. Implementation lands in two PRs once accepted: the schema + lazy provisioner, then the PrismaScopeResolver + admin-UI scope-seeding screen + test-tenant seed for the 19 personas. Index updated.
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Markdown
73 lines
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Markdown
# Architectural Decision Records
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This project records architecturally-significant decisions as **ADRs** in the [MADR 4.0.0](https://github.com/adr/madr) format. References: [adr.github.io](https://adr.github.io/).
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## Why ADRs
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ADRs capture the _why_ behind a decision — context, drivers, options considered, trade-offs accepted — at the moment the decision is made. They make architecture reviewable, onboarding faster, and prevent the same debate from being re-litigated later.
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## Conventions
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- **Format:** MADR 4.0.0. Start from [template.md](template.md).
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- **Filename:** `NNNN-kebab-case-title.md`, e.g. `0007-adopt-tailwind-for-design-tokens.md`.
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- **Numbering:** globally sequential 4-digit prefix. Numbers never reset, never get reused — even when an ADR is superseded or deprecated.
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- **Layout:** flat folder. ADRs are not nested into category subfolders; topical organization happens via tags.
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- **Tags:** every ADR carries a `tags:` array in the MADR frontmatter, drawn from the [tag vocabulary](#tag-vocabulary) below. An ADR may carry several tags. Propose new tags (or renames) in the same PR that needs them; never invent ad-hoc tags inline.
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- **Status lifecycle:** `proposed` → `accepted` → optionally `deprecated` or `superseded by [ADR-NNNN](NNNN-other.md)`. Update the YAML frontmatter; never delete an ADR.
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- **Index maintenance:** every ADR addition or status change must update the [Index](#index) below in the same commit.
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## When to write an ADR
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Write one whenever a development decision is non-trivial: tool or library choice, framework pattern, security control, perf budget, a11y target, naming convention, deprecation, breaking change, or any choice that future contributors would benefit from understanding the _why_ of.
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## Tag vocabulary
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The vocabulary below is the source of truth. It is intentionally coarse — propose extensions only when an existing tag genuinely doesn't fit, and avoid overly narrow tags.
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| Tag | Scope |
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| ---------------- | ------------------------------------------------------------------- |
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| `frontend` | UI, Angular, components, design system, client-side state |
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| `backend` | API, BFF, server-side services |
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| `security` | AuthN, AuthZ, sessions, CSP, dependency scanning, secret management |
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| `performance` | Perf budgets, caching, bundle size, Lighthouse |
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| `accessibility` | WCAG, a11y testing, keyboard, ARIA, contrast |
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| `infrastructure` | CI/CD, hosting, deployment, runtime |
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| `observability` | Logs, metrics, traces, correlation IDs, monitoring |
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| `data` | Persistence, schemas, migrations, data flow |
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| `process` | Team conventions, workflows, repo policy |
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> _Status: starter vocabulary, to be refined as ADRs accumulate. Update this table whenever a tag is added, renamed, or retired._
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## Index
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ADRs are listed in numerical order. To slice by topic, filter on the `Tags` column.
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| # | Title | Status | Tags | Date |
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| ------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------- | -------- | -------------------------------------------------------------- | ---------- |
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| [0001](0001-use-adrs-to-record-architectural-decisions.md) | Use ADRs to record architectural decisions | accepted | `process` | 2026-04-29 |
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| [0002](0002-adopt-nx-monorepo-apps-preset.md) | Adopt Nx monorepo with the `apps` preset | accepted | `infrastructure`, `frontend`, `backend` | 2026-04-29 |
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| [0003](0003-workspace-and-app-naming-convention.md) | Workspace and app naming convention | accepted | `process` | 2026-04-29 |
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| [0004](0004-frontend-stack-angular-csr-zoneless-signals.md) | Frontend stack — Angular (latest LTS), standalone, zoneless, Signals, CSR-only, Vitest | accepted | `frontend` | 2026-04-29 |
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| [0005](0005-backend-stack-nestjs.md) | Backend stack — NestJS over Express, Fastify, Hono | accepted | `backend` | 2026-04-29 |
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| [0006](0006-persistence-postgresql-prisma.md) | Persistence — PostgreSQL with Prisma | accepted | `data`, `backend` | 2026-04-29 |
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| [0007](0007-pre-commit-hooks-and-conventional-commits.md) | Pre-commit hooks and Conventional Commits | accepted | `process` | 2026-04-29 |
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| [0008](0008-identity-model-entra-workforce-dual-audience.md) | Identity model — multi-tenant Entra ID for workforce, dual-audience design for future External ID | accepted | `security`, `data` | 2026-04-29 |
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| [0009](0009-auth-flow-oidc-pkce-msal-node.md) | Authentication flow — OIDC Authorization Code + PKCE via MSAL Node, BFF session pattern | accepted | `security`, `backend` | 2026-04-29 |
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| [0010](0010-session-management-redis.md) | Session management — opaque session IDs in cookies, payload in self-hosted Redis with AES-GCM at rest | accepted | `security`, `backend`, `infrastructure` | 2026-04-29 |
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| [0011](0011-mfa-enforcement-entra-conditional-access.md) | MFA enforcement — Entra ID Conditional Access baseline, BFF claim sanity-check, step-up hooks designed-in | accepted | `security` | 2026-04-29 |
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| [0012](0012-observability-pino-opentelemetry.md) | Observability — Pino structured logs + OpenTelemetry tracing, W3C Trace Context propagation, stdout + collector | accepted | `observability`, `backend`, `frontend` | 2026-04-29 |
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| [0013](0013-audit-trail-separated-postgres-append-only.md) | Audit trail — separated append-only Postgres schema, decoupled from app logs | accepted | `security`, `observability`, `data` | 2026-04-29 |
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| [0014](0014-downstream-api-access-obo-pattern.md) | Downstream API access — On-Behalf-Of pattern, unified `DownstreamApiClient`, audience-aware authorization | accepted | `security`, `backend` | 2026-04-29 |
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| [0015](0015-cicd-gitea-actions.md) | CI/CD pipeline — Gitea Actions, trunk-based + squash-merge, thin YAML over portable scripts | accepted | `infrastructure`, `process` | 2026-04-30 |
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| [0016](0016-accessibility-baseline-wcag-aa-targeted-aaa.md) | Accessibility baseline — WCAG 2.2 AA + targeted AAA, Angular CDK + spartan-ng + Tailwind, APF panel testing | accepted | `accessibility`, `frontend`, `process` | 2026-04-30 |
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| [0017](0017-performance-budgets-lighthouse-ci.md) | Performance budgets — Core Web Vitals + Lighthouse CI gates, bundle budgets, BFF p95/p99 SLOs | accepted | `performance`, `frontend`, `backend`, `process` | 2026-04-30 |
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| [0018](0018-environment-configuration-strategy.md) | Environment configuration — Angular `environment.ts`, BFF env vars, audit pool split | accepted | `frontend`, `backend`, `infrastructure`, `process` | 2026-05-10 |
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| [0019](0019-internationalisation-angular-localize.md) | Internationalisation — `@angular/localize`, build-time per-locale bundles, `/fr` + `/en` path-based routing | accepted | `frontend`, `accessibility`, `performance`, `process` | 2026-05-11 |
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| [0020](0020-portal-admin-app.md) | `portal-admin` — dedicated SPA for portal administration, sharing the existing BFF | accepted | `frontend`, `backend`, `security`, `infrastructure`, `process` | 2026-05-11 |
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| [0021](0021-phase-2-security-baseline.md) | Phase-2 security baseline — helmet, CORS allowlist, double-submit CSRF, rate limiting, structured error envelope | accepted | `security`, `backend` | 2026-05-13 |
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| [0022](0022-docs-site-vitepress.md) | Documentation site — VitePress + Mermaid plugin, separate static deployment | accepted | `process`, `infrastructure` | 2026-05-15 |
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| [0023](0023-charts-d3-observable-plot.md) | Charts + dashboards — D3 + Observable Plot wrapped in `libs/shared/charts` | accepted | `frontend`, `accessibility`, `performance` | 2026-05-16 |
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| [0024](0024-ai-service-relay-grpc-sse-bridge.md) | AI service relay — vendored gRPC protos, NestJS gRPC client, SSE bridge to the SPA, POC unsigned principal | accepted | `backend`, `security`, `observability` | 2026-05-19 |
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| [0025](0025-authorization-model-privileges-roles-scopes.md) | Authorization model — three orthogonal axes (privileges × functional roles × scopes), Entra-backed | accepted | `security`, `backend`, `data` | 2026-05-20 |
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| [0026](0026-person-user-portal-data-model.md) | `Person` golden record + `User` portal-account + organisational hierarchy — portal-side data model | proposed | `data`, `backend`, `security` | 2026-05-24 |
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