style(etl): applique le formatage Ruff aux tests API Mock

feat(backend): detecte les alertes internes a partir des lectures et …

.env.example

@@ -17,3 +17,9 @@ APP_LOG_LEVEL=INFO
 APP_SECRET_KEY=change_me
 APP_CORS_ORIGINS=http://localhost:4200
 BACKEND_PORT=8000
+
+# API Mock EnerVision
+APP_MOCK_API_BASE_URL=https://api-mock.charlieandre.fr
+APP_MOCK_API_USERNAME=change_me
+APP_MOCK_API_PASSWORD=change_me
+APP_MOCK_API_TIMEOUT_SECONDS=10

.github/dependabot.yml

@@ -0,0 +1,40 @@
+version: 2
+updates:
+  # Frontend — npm
+  - package-ecosystem: "npm"
+    directory: "/apps/frontend"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 5
+    groups:
+      frontend-dependencies:
+        patterns:
+          - "*"
+
+  # Backend — uv (lit pyproject.toml / uv.lock)
+  - package-ecosystem: "uv"
+    directory: "/apps/backend"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 5
+    groups:
+      backend-dependencies:
+        patterns:
+          - "*"
+
+  # Les workflows GitHub Actions eux-mêmes ont aussi des dépendances à jour
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Si un Dockerfile existe pour le backend
+  - package-ecosystem: "docker"
+    directory: "/apps/backend"
+    schedule:
+      interval: "weekly"
+
+  - package-ecosystem: "docker"
+    directory: "/apps/frontend"
+    schedule:
+      interval: "weekly"

.github/workflows/backend.yml

@@ -56,3 +56,87 @@ jobs:
       # Le marqueur `integration` est exclu par défaut, donc aucune base n'est nécessaire ici.
       - name: Tests et couverture
         run: uv run pytest --cov-fail-under=85
+
+  # Piège : l'image est celle de docker-compose.yml, pas une image `postgres` nue. La première
+  # migration (`5353c0e4f094`) échoue volontairement si l'extension TimescaleDB manque, et un
+  # écart d'image entre la CI et le poste rendrait ce job vert sur une base qui n'est pas la nôtre.
+  integration:
+    name: Tests exigeant une base
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: apps/backend
+
+    services:
+      db:
+        image: timescale/timescaledb-ha:pg17
+        env:
+          POSTGRES_USER: enervision
+          POSTGRES_PASSWORD: change_me
+          POSTGRES_DB: enervision_test
+        ports:
+          - "5433:5432"
+        options: >-
+          --health-cmd "pg_isready -U enervision -d enervision_test"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 12
+          --health-start-period 40s
+
+    env:
+      DATABASE_URL: postgresql+asyncpg://enervision:change_me@localhost:5433/enervision_test
+      APP_SECRET_KEY: secret-de-test-assez-long-pour-le-validateur
+      PGPASSWORD: change_me
+
+    steps:
+      - name: Récupère le dépôt
+        uses: actions/checkout@v4
+
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+          cache-dependency-glob: apps/backend/uv.lock
+
+      - name: Installe l'interpréteur déclaré par .python-version
+        run: uv python install
+
+      - name: Synchronise les dépendances sans dévier du verrou
+        run: uv sync --all-groups --frozen
+
+      # Sur le poste, c'est db/init/110-test-database.sql qui pose l'extension. Ce fichier n'est
+      # pas monté ici, et sans lui `alembic upgrade head` s'arrête sur la garde de la révision 1.
+      - name: Active TimescaleDB sur la base de test
+        run: psql -h localhost -p 5433 -U enervision -d enervision_test -c "CREATE EXTENSION IF NOT EXISTS timescaledb"
+
+      - name: Applique les migrations
+        run: uv run alembic upgrade head
+
+      # `-m` en ligne de commande écrase celui d'`addopts`. La couverture est désactivée : ce job
+      # ne joue qu'une partie de la suite, son taux n'aurait aucun sens face au seuil de 85 %.
+      - name: Tests d'intégration
+        run: uv run pytest -m integration --no-cov
+
+  security-audit:
+    name: Audit des dépendances
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: apps/backend
+
+    steps:
+      - name: Récupère le dépôt
+        uses: actions/checkout@v4
+
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+          cache-dependency-glob: apps/backend/uv.lock
+
+      # L'audit porte sur le verrou, pas sur l'environnement : sinon pip-audit auditerait
+      # aussi les paquets que son propre `--with` injecte, hors dépendances du projet.
+      - name: Audite les dépendances livrées
+        # Piège : sans `shell: bash`, un échec de `uv export` serait masqué par le pipe.
+        shell: bash
+        run: uv export --frozen --no-dev --no-emit-project --no-hashes | uvx pip-audit --requirement /dev/stdin --no-deps

.github/workflows/frontend.yml

@@ -1,20 +1,6 @@
 name: Frontend
-# Pipeline à choix multiple
 
 on:
-  # workflow_dispatch -> lancement manuel des jobs
-  workflow_dispatch:
-    inputs:
-      job_choice:
-        required: true
-        description: "Choix du job"
-        type: choice
-        default: all
-        options:
-            - build
-            - sonarqube
-            - test
-            - all # lancer tous les jobs
   push:
     paths:
       - "apps/frontend/**"
@@ -23,8 +9,9 @@ on:
     paths:
       - "apps/frontend/**"
       - ".github/workflows/frontend.yml"
-# Ordre de lancement des jobs
+
-# build -> test -> sonarqube -> deploy
+permissions:
+  contents: read
 
 jobs:
   build:
@@ -42,6 +29,18 @@ jobs:
       - run: npm run build
         working-directory: apps/frontend
 
+  security-audit:
+    name: Audit des dépendances
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+      # Seuil high : une vulnérabilité moderate de devDependency ne doit pas bloquer une livraison.
+      - run: npm audit --audit-level=high --package-lock-only
+        working-directory: apps/frontend
+
   test:
     needs: build
     runs-on: ubuntu-latest
@@ -52,26 +51,14 @@ jobs:
           node-version: 24
           cache: npm
           cache-dependency-path: apps/frontend/package-lock.json
-      - run: npm ci 
+      - name : Installation des dépendances (Front)
+        run: npm ci 
         working-directory: apps/frontend
-      - run: npm test -- --watch=false
+      - name : Lancement des tests et génénration du rapport de couverture (Front)
+        run: npm test --watch=false --code-coverage --coverageReporters=lcov
         working-directory: apps/frontend
-
+      - name: Upload coverage
-  sonarqube:
+        uses: actions/upload-artifact@v4
-    needs: [build, test]
-    name: SonarQube
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
-          fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
+          name: frontend-coverage
-      - name: SonarQube Scan
+          path: apps/frontend/coverage/frontend/lcov.info
-        uses: SonarSource/sonarqube-scan-action@7006c4492b2e0ee0f816d36501671557c97f5995 # v8.1.0
-        env:
-          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-
-    
-  # deploy:
-  #   runs-on: ubuntu-latest
-  #   steps:
-  #   - run: echo "DEPLOY job is running"

.github/workflows/ml.yml

@@ -0,0 +1,59 @@
+name: ML
+
+# Piège : la version de Python vient de ml/.python-version, et doit rester en 3.14 (cf.
+# .github/workflows/backend.yml, même contrainte).
+
+on:
+  push:
+    paths:
+      - "ml/**"
+      - ".github/workflows/ml.yml"
+  pull_request:
+    paths:
+      - "ml/**"
+      - ".github/workflows/ml.yml"
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ml-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  verification:
+    name: Lint, typage et tests
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ml
+
+    steps:
+      - name: Récupère le dépôt
+        uses: actions/checkout@v4
+
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+          cache-dependency-glob: ml/uv.lock
+
+      - name: Installe l'interpréteur déclaré par .python-version
+        run: uv python install
+
+      - name: Synchronise les dépendances sans dévier du verrou
+        run: uv sync --all-groups --frozen
+
+      - name: Vérifie le formatage
+        run: uv run ruff format --check .
+
+      - name: Analyse statique
+        run: uv run ruff check --output-format=github .
+
+      - name: Typage
+        run: uv run mypy enervision_ml tests
+
+      # Aucun test ne touche PostgreSQL ni MLflow distant : tout tourne sur donnees
+      # synthetiques ou un magasin SQLite local jetable (cf. ml/tests/test_train.py).
+      - name: Tests
+        run: uv run pytest

.github/workflows/sonarqube.yml

@@ -0,0 +1,132 @@
+name: SonarQube
+
+on:
+  push:
+    paths:
+      - "apps/frontend/**"
+      - "apps/backend/**"
+      - ".github/workflows/sonarqube.yml"
+  pull_request:
+    paths:
+      - "apps/frontend/**"
+      - "apps/backend/**"
+      - ".github/workflows/sonarqube.yml"
+
+
+# Build l'ensemble du projet, puis lance les tests
+# Génère les rapports de couverture, puis lance l'analyse SonarQube
+
+jobs:
+  build-front:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+          cache: npm
+          cache-dependency-path: apps/frontend/package-lock.json
+      
+      - run: npm ci 
+        working-directory: apps/frontend
+      - run: npm run build
+        working-directory: apps/frontend
+
+  test-front:  
+    needs: build-front
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+          cache: npm
+          cache-dependency-path: apps/frontend/package-lock.json
+
+      - name : Installation des dépendances (Front)
+        run: npm ci 
+        working-directory: apps/frontend
+
+      - name : Lancement des tests et génénration du rapport de couverture (Front)
+        run: npm test --watch=false --code-coverage --coverageReporters=lcov
+        working-directory: apps/frontend
+
+      - name: Upload coverage
+        uses: actions/upload-artifact@v4
+        with:
+          name: frontend-coverage
+          path: apps/frontend/coverage/frontend/lcov.info
+
+  build-back:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+          cache-dependency-glob: apps/backend/uv.lock
+      - name: Installe l'interpréteur déclaré par .python-version
+        run: uv python install
+        working-directory: apps/backend
+
+      - name: Synchronise les dépendances sans dévier du verrou
+        run: uv sync --all-groups --frozen
+        working-directory: apps/backend
+
+      - name: Vérifie le formatage
+        run: uv run ruff format --check .
+        working-directory: apps/backend
+
+      - name: Analyse statique
+        run: uv run ruff check --output-format=github .
+        working-directory: apps/backend
+
+      - name: Typage
+        run: uv run mypy app
+        working-directory: apps/backend
+
+
+  test-back:
+    needs: build-back
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+          cache-dependency-glob: apps/backend/uv.lock
+
+      - name : Lancement des tests et génénration du rapport de couverture (Back)
+        run: uv run pytest --cov-fail-under=85 --cov-report=xml
+        working-directory: apps/backend
+
+      - name: Upload coverage
+        uses: actions/upload-artifact@v4
+        with:
+          name: backend-coverage
+          path: apps/backend/coverage.xml
+
+  sonarqube:
+    needs: [build-front, build-back, test-front, test-back]
+    name: SonarQube
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+      - name: Téléchargement du rapport de couverture (Front)
+        uses: actions/download-artifact@v4
+        with:
+          name: frontend-coverage
+          path: apps/frontend/coverage/frontend
+      - name: Téléchargement du rapport de couverture (Back)
+        uses: actions/download-artifact@v4
+        with:
+          name: backend-coverage
+          path: apps/backend
+      - name: SonarQube Scan
+        uses: SonarSource/sonarqube-scan-action@v8
+        env:
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

.gitignore

@@ -58,6 +58,14 @@ data/raw/*
 monitoring/grafana/data/
 monitoring/prometheus/data/
 
+# ML : jeu de donnees, modeles entraines et suivi MLflow local, tous generes/volumineux
+ml/data/
+ml/models/*
+!ml/models/.gitkeep
+ml/mlruns/
+ml/mlartifacts/
+ml/mlflow.db
+
 # IDE et OS
 .idea/
 .vscode/

Makefile

@@ -1,15 +1,17 @@
 BACKEND := apps/backend
 FRONTEND := apps/frontend
+ML := ml
 
 .DEFAULT_GOAL := help
-.PHONY: help install install-backend install-frontend dev dev-backend dev-frontend \
+.PHONY: help install install-backend install-frontend install-ml dev dev-backend dev-frontend \
         lint format typecheck test test-cov test-integration check \
-        openapi docker-build db-up db-down db-reset db-logs db-psql migrate bootstrap-admin
+        openapi docker-build db-up db-down db-reset db-logs db-psql migrate bootstrap-admin \
+        ml-lint ml-typecheck ml-test ml-check ml-train ml-score
 
 help: ## Liste les cibles disponibles
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-16s\033[0m %s\n", $$1, $$2}'
 
-install: install-backend install-frontend ## Installe les dépendances backend et frontend
+install: install-backend install-frontend install-ml ## Installe les dépendances backend, frontend et ML
 
 install-backend: ## Installe les dépendances du backend
 	cd $(BACKEND) && uv sync --all-groups
@@ -17,6 +19,9 @@ install-backend: ## Installe les dépendances du backend
 install-frontend: ## Installe les dépendances du frontend
 	cd $(FRONTEND) && npm ci
 
+install-ml: ## Installe les dépendances du pipeline ML
+	cd $(ML) && uv sync --all-groups
+
 dev: ## Lance toute la stack (backend + frontend) en rechargement à chaud
 	@trap 'kill 0' EXIT INT TERM; \
 	$(MAKE) --no-print-directory dev-backend & \
@@ -55,6 +60,23 @@ check: lint typecheck test ## Chaîne de vérification complète
 openapi: ## Régénère apps/backend/openapi.json depuis les routes déclarées
 	cd $(BACKEND) && uv run python -m app.cli export-openapi
 
+ml-lint: ## Analyse statique du pipeline ML
+	cd $(ML) && uv run ruff check .
+
+ml-typecheck: ## Vérifie le typage du pipeline ML
+	cd $(ML) && uv run mypy enervision_ml tests
+
+ml-test: ## Exécute les tests du pipeline ML (donnees synthetiques, sans base ni serveur MLflow)
+	cd $(ML) && uv run pytest
+
+ml-check: ml-lint ml-typecheck ml-test ## Chaîne de vérification complète du pipeline ML
+
+ml-train: ## Entraine le modele LightGBM. CSV=chemin optionnel, sinon lit ML_DATABASE_URL
+	cd $(ML) && uv run python -m enervision_ml.train $(if $(CSV),--csv $(CSV),)
+
+ml-score: ## Score le prochain pas horaire et l'ecrit dans `prediction`. CSV=chemin optionnel
+	cd $(ML) && uv run python -m enervision_ml.score $(if $(CSV),--csv $(CSV),)
+
 docker-build: ## Construit l'image du backend
 	docker build -t enervision-backend:local $(BACKEND)
 

README.md

@@ -25,6 +25,7 @@ Ce que la documentation apporte à chacun : [docs/architecture/00-vue-ensemble.m
 | Infra      | Terraform (k3s single-node)         | `infra/terraform`   | Initialise    |
 | CI/CD      | GitHub Actions                      | `.github/workflows` | Backend en place |
 | Monitoring | Prometheus, Grafana, Alertmanager   | `monitoring`        | A initialiser |
+| ML         | LightGBM, MLflow                    | `ml`                | Entrainement initialise |
 
 Le backend, la base et l'infrastructure (Terraform/k3s) sont initialises a ce stade. Le frontend
 sert un tableau de bord sur `/dashboard`, dont les données proviennent de fixtures : les endpoints
@@ -53,6 +54,7 @@ L'etat detaille de chaque brique et les vues d'architecture sont dans
 ├── infra/terraform/
 │   ├── modules/        Modules reutilisables
 │   └── environments/   Racines Terraform, une par environnement
+├── ml/                 Pipeline d'entrainement LightGBM, suivi MLflow
 ├── monitoring/
 │   ├── prometheus/     Collecte et regles d'alerte
 │   ├── grafana/        Provisioning et dashboards

apps/backend/.env.example

@@ -18,3 +18,7 @@ APP_SMTP_HOST=localhost
 APP_SMTP_PORT=1025
 APP_SMTP_USE_TLS=false
 APP_SMTP_FROM_ADDRESS=no-reply@enervision.fr
+APP_MOCK_API_BASE_URL=https://api-mock.charlieandre.fr
+APP_MOCK_API_USERNAME=change_me
+APP_MOCK_API_PASSWORD=change_me
+APP_MOCK_API_TIMEOUT_SECONDS=10

apps/backend/TESTING.md

@@ -123,6 +123,11 @@ async def test_repository_reads_back_what_it_wrote(session: AsyncSession) -> Non
 defaut, ce qui garde `make check` jouable sans Docker. Tout autre marqueur doit etre
 declare dans `pyproject.toml` : `--strict-markers` refuse les marqueurs inconnus.
 
+Ces tests ne sont pas pour autant facultatifs : le job `integration` de
+`.github/workflows/backend.yml` monte un service TimescaleDB, applique les migrations et
+les joue a chaque poussee. Un test `integration` casse donc la CI comme un autre. En local,
+`make db-up` puis `make test-integration`.
+
 ## Couverture
 
 Les branches sont mesurees, pas seulement les lignes. Le seuil de 85 % ne s'applique
@@ -142,14 +147,27 @@ uv run pytest tests/api/test_health.py           # un seul fichier
 uv run pytest -k readiness                       # par motif de nom
 ```
 
-## Trois fichiers à connaître avant de toucher à l'authentification
+## Quatre fichiers à connaître avant de toucher à l'authentification
+
+`tests/api/acces.py` porte la classification des routes du contrat, en quatre ensembles :
+`ROUTES_PUBLIQUES`, `ROUTE_COOKIE`, `ROUTES_SANS_ROLE` et la table `ROLE_MINIMUM`. Ce n'est pas
+un fichier de test, c'est la référence que les trois autres confrontent au comportement observé.
+**Toute route ajoutée doit y être classée** : `test_every_declared_route_is_classified` échoue
+sinon, et échoue aussi sur une entrée qui ne correspond plus à aucune route.
 
 `tests/api/test_route_protection.py` interroge réellement chaque route sans identifiant et
 échoue si l'une d'elles répond autre chose qu'un 401 ou un 403. Il n'inspecte pas l'arbre de
 dépendances : celui-ci n'est accessible que par l'API privée de FastAPI, et surtout une route
 peut porter la bonne dépendance tout en répondant quand même. **Rendre une route publique impose
-donc de modifier la liste `ROUTES_PUBLIQUES` de ce fichier**, ce qui apparaît en clair dans la
+donc de modifier `ROUTES_PUBLIQUES` dans `acces.py`**, ce qui apparaît en clair dans la diff
-diff d'une pull request.
+d'une pull request.
+
+`tests/api/test_matrice_acces.py` croise chaque route gardée avec chacun des trois rôles, dans
+les deux sens : un rôle insuffisant reçoit un 403 `Droits insuffisants`, un rôle suffisant ne le
+reçoit jamais. Le second sens est ce qui rend visible une garde posée trop haut, par exemple
+`AdminDep` sur une route de lecture. La même matrice est rejouée sous `integration` avec de vrais
+jetons, donc en traversant le décodage du JWT et la relecture du compte en base, que
+`dependency_overrides` court-circuite.
 
 `tests/services/test_auth.py` donne au faux hacheur un **compteur d'appels**. C'est ce qui rend
 possibles les deux assertions qui prouvent la conception, et qu'aucune autre forme de test

apps/backend/app/api/deps.py

@@ -27,6 +27,7 @@ from app.repositories.audit_log import AuditLogRepository
 from app.repositories.login_attempt import LoginAttemptRepository
 from app.repositories.password_reset_attempt import PasswordResetAttemptRepository
 from app.repositories.password_reset_token import PasswordResetTokenRepository
+from app.repositories.prediction import PredictionRepository
 from app.repositories.reading import ReadingRepository
 from app.repositories.recommendation import RecommendationRepository
 from app.repositories.refresh_token import RefreshTokenRepository
@@ -34,6 +35,7 @@ from app.repositories.site import SiteRepository
 from app.repositories.user import UserRepository
 from app.services.alert import AlertService
 from app.services.auth import AuthService, LoginPolicy, PasswordResetPolicy
+from app.services.prediction import PredictionService
 from app.services.reading import ReadingService
 from app.services.recommendation import RecommendationService
 from app.services.sensor import SensorService
@@ -171,14 +173,19 @@ UserServiceDep = Annotated[UserService, Depends(get_user_service)]
 
 
 def get_site_service(session: SessionDep) -> SiteService:
-    return SiteService(sites=SiteRepository(session))
+    return SiteService(sites=SiteRepository(session), readings=ReadingRepository(session))
 
 
 SiteServiceDep = Annotated[SiteService, Depends(get_site_service)]
 
 
 def get_alert_service(session: SessionDep) -> AlertService:
-    return AlertService(alerts=AlertRepository(session))
+    return AlertService(
+        alerts=AlertRepository(session),
+        readings=ReadingRepository(session),
+        predictions=PredictionRepository(session),
+        sites=SiteRepository(session),
+    )
 
 
 AlertServiceDep = Annotated[AlertService, Depends(get_alert_service)]
@@ -212,6 +219,15 @@ def get_sensor_service(session: SessionDep) -> SensorService:
 SensorServiceDep = Annotated[SensorService, Depends(get_sensor_service)]
 
 
+def get_prediction_service(session: SessionDep) -> PredictionService:
+    return PredictionService(
+        sites=SiteRepository(session), predictions=PredictionRepository(session)
+    )
+
+
+PredictionServiceDep = Annotated[PredictionService, Depends(get_prediction_service)]
+
+
 async def get_current_principal(
     credentials: CredentialsDep,
     session: SessionDep,

apps/backend/app/api/openapi.py

@@ -83,6 +83,13 @@ TAGS: Final[list[dict[str, Any]]] = [
         "name": "sensors",
         "description": "État de santé des capteurs par site. Réservé au rôle `admin`.",
     },
+    {
+        "name": "predictions",
+        "description": (
+            "Dernière prévision de consommation par site, calculée hors ligne par le pipeline "
+            "de scoring (`ml/`) et simplement lue ici. Accessible à partir du rôle `lecteur`."
+        ),
+    },
 ]
 
 cookie_de_rafraichissement = APIKeyCookie(

apps/backend/app/api/v1/endpoints/predictions.py

@@ -0,0 +1,18 @@
+from fastapi import APIRouter
+
+from app.api.deps import LecteurDep, PredictionServiceDep
+from app.schemas.prediction import PredictionSummaryResponse
+
+router = APIRouter()
+
+
+@router.get(
+    "",
+    response_model=PredictionSummaryResponse,
+    summary="Dernière prédiction de consommation par site",
+)
+async def get_predictions(
+    _: LecteurDep, service: PredictionServiceDep
+) -> PredictionSummaryResponse:
+    resume = await service.summary()
+    return PredictionSummaryResponse.model_validate(resume)

apps/backend/app/api/v1/endpoints/sites.py

@@ -3,7 +3,7 @@ from fastapi import APIRouter, HTTPException, status
 from app.api.deps import LecteurDep, SiteServiceDep
 from app.api.openapi import REPONSE_VALIDATION, Reponses
 from app.schemas.errors import ErrorResponse
-from app.schemas.site import SiteResponse
+from app.schemas.site import SiteCurrentResponse, SiteResponse
 from app.services.site import SiteNotFoundError
 
 router = APIRouter()
@@ -34,3 +34,19 @@ async def get_site(site_id: str, _: LecteurDep, service: SiteServiceDep) -> Site
             status_code=status.HTTP_404_NOT_FOUND, detail="Site introuvable"
         ) from erreur
     return SiteResponse.model_validate(site)
+
+
+@router.get(
+    "/{site_id}/current",
+    response_model=SiteCurrentResponse,
+    summary="Dernière mesure d'un site",
+    responses=REPONSES_INTROUVABLE,
+)
+async def get_current(site_id: str, _: LecteurDep, service: SiteServiceDep) -> SiteCurrentResponse:
+    try:
+        actuel = await service.current(site_id)
+    except SiteNotFoundError as erreur:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND, detail="Site introuvable"
+        ) from erreur
+    return SiteCurrentResponse.model_validate(actuel)

apps/backend/app/api/v1/router.py

@@ -5,6 +5,7 @@ from app.api.v1.endpoints import (
     alerts,
     auth,
     health,
+    predictions,
     readings,
     recommendations,
     sensors,
@@ -34,3 +35,6 @@ api_router.include_router(
 api_router.include_router(
     sensors.router, prefix="/sensors", tags=["sensors"], responses=REPONSES_ADMIN
 )
+api_router.include_router(
+    predictions.router, prefix="/predictions", tags=["predictions"], responses=REPONSES_LECTEUR
+)

apps/backend/app/core/config.py

@@ -34,6 +34,11 @@ class Settings(BaseSettings):
     database_pool_size: int = 5
     database_max_overflow: int = 10
 
+    mock_api_base_url: str = "https://api-mock.charlieandre.fr"
+    mock_api_username: str | None = None
+    mock_api_password: SecretStr | None = None
+    mock_api_timeout_seconds: float = Field(default=10.0, gt=0)
+
     jwt_issuer: str = "enervision-api"
     jwt_audience: str = "enervision-web"
     access_token_ttl_seconds: int = Field(default=900, ge=60, le=3600)

apps/backend/app/detection/internal_alerts.py

@@ -0,0 +1,68 @@
+# Détection d'alertes internes EnerVision (issue #104) : script lancé à la main pour l'instant,
+# comme `enervision_ml.score` côté ML, sans automatisation Airflow pour l'ordonnancer.
+
+from __future__ import annotations
+
+import argparse
+import asyncio
+import sys
+from datetime import UTC, datetime
+
+from app.core.config import get_settings
+from app.db.session import get_session_factory
+from app.repositories.alert import AlertRepository
+from app.repositories.prediction import PredictionRepository
+from app.repositories.reading import ReadingRepository
+from app.repositories.site import SiteRepository
+from app.services.alert import AlertService
+
+
+async def run_detection(*, now: datetime | None = None, site_id: str | None = None) -> int:
+    """Exécute les cinq règles de détection et enregistre les nouvelles alertes. Rend le nombre de
+    lignes effectivement insérées (les doublons de `source_alert_id` sont silencieusement
+    ignorés)."""
+    async with get_session_factory()() as session:
+        service = AlertService(
+            alerts=AlertRepository(session),
+            readings=ReadingRepository(session),
+            predictions=PredictionRepository(session),
+            sites=SiteRepository(session),
+        )
+        nouvelles = await service.detect(now=now, site_id=site_id)
+        await session.commit()
+    return len(nouvelles)
+
+
+def _parse_instant(valeur: str) -> datetime:
+    instant = datetime.fromisoformat(valeur)
+    return instant if instant.tzinfo is not None else instant.replace(tzinfo=UTC)
+
+
+def parse_args(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        prog="python -m app.detection.internal_alerts",
+        description="Détection d'alertes internes EnerVision",
+    )
+    parser.add_argument("--site-id", default=None, help="Limite la détection à un seul site.")
+    parser.add_argument(
+        "--now",
+        type=_parse_instant,
+        default=None,
+        help=(
+            "Instant de référence (ISO 8601, UTC si le fuseau est omis). Défaut : l'heure courante."
+        ),
+    )
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str] | None = None) -> int:
+    args = parse_args(argv)
+    # Échoue tôt si `APP_SECRET_KEY`/`DATABASE_URL` manquent, avant toute requête à la base.
+    get_settings()
+    nombre = asyncio.run(run_detection(now=args.now, site_id=args.site_id))
+    print(f"{nombre} nouvelle(s) alerte(s) enregistrée(s).")
+    return 0
+
+
+if __name__ == "__main__":  # pragma: no cover
+    sys.exit(main())

apps/backend/app/etl/mock_api_import.py

@@ -0,0 +1,315 @@
+from __future__ import annotations
+
+import argparse
+import asyncio
+import json
+from datetime import datetime
+from typing import Any
+
+import httpx
+from sqlalchemy import text
+from sqlalchemy.ext.asyncio import AsyncConnection, create_async_engine
+
+from app.core.config import get_settings
+
+SOURCE_HISTORY = "api_history"
+
+
+def create_mock_api_client() -> httpx.AsyncClient:
+    settings = get_settings()
+
+    if settings.mock_api_username is None or settings.mock_api_password is None:
+        raise ValueError("Les identifiants de l'API Mock ne sont pas configurés.")
+
+    return httpx.AsyncClient(
+        base_url=settings.mock_api_base_url.rstrip("/"),
+        auth=(
+            settings.mock_api_username,
+            settings.mock_api_password.get_secret_value(),
+        ),
+        timeout=settings.mock_api_timeout_seconds,
+    )
+
+
+async def fetch_sites(
+    client: httpx.AsyncClient,
+) -> list[dict[str, Any]]:
+    response = await client.get("/api/v1/sites")
+
+    response.raise_for_status()
+
+    payload = response.json()
+
+    if not isinstance(payload, list):
+        raise ValueError("La réponse /api/v1/sites doit être une liste.")
+
+    return payload
+
+
+async def upsert_sites(
+    connection: AsyncConnection,
+    sites: list[dict[str, Any]],
+) -> None:
+    if not sites:
+        return
+
+    await connection.execute(
+        text(
+            """
+            INSERT INTO site (
+                site_id,
+                site_type,
+                site_name,
+                location,
+                capacity_kw,
+                status
+            )
+            VALUES (
+                :site_id,
+                :site_type,
+                :site_name,
+                :location,
+                :capacity_kw,
+                :status
+            )
+            ON CONFLICT (site_id)
+            DO UPDATE SET
+                site_type = EXCLUDED.site_type,
+                site_name = EXCLUDED.site_name,
+                location = EXCLUDED.location,
+                capacity_kw = EXCLUDED.capacity_kw,
+                status = EXCLUDED.status
+            """
+        ),
+        sites,
+    )
+
+
+async def fetch_readings(
+    client: httpx.AsyncClient,
+    site_id: str,
+    start_time: datetime,
+    end_time: datetime,
+    limit: int = 1000,
+) -> list[dict[str, Any]]:
+    response = await client.get(
+        "/api/v1/readings",
+        params={
+            "site_id": site_id,
+            "start_time": start_time.isoformat(),
+            "end_time": end_time.isoformat(),
+            "limit": limit,
+        },
+    )
+
+    response.raise_for_status()
+
+    payload = response.json()
+
+    if not isinstance(payload, list):
+        raise ValueError("La réponse /api/v1/readings doit être une liste.")
+
+    return payload
+
+
+def build_reading_row(
+    reading: dict[str, Any],
+) -> dict[str, Any]:
+    timestamp = datetime.fromisoformat(reading["timestamp"].replace("Z", "+00:00"))
+    return {
+        "site_id": reading["site_id"],
+        "timestamp": timestamp,
+        "source": SOURCE_HISTORY,
+        "dataset_id": None,
+        "consumption_kw": reading.get("consumption_kw"),
+        "consumption_kwh": reading.get("consumption_kwh"),
+        "consumption_euros": None,
+        "voltage_v": reading.get("voltage_v"),
+        "current_a": reading.get("current_a"),
+        "power_factor": reading.get("power_factor"),
+        "temperature_celsius": reading.get("temperature_celsius"),
+        "humidity_percent": reading.get("humidity_percent"),
+        "solar_irradiance_wm2": None,
+        "is_working_hours": None,
+        "data_quality": reading.get("data_quality"),
+        "null_reasons": reading.get("null_reasons"),
+        "imputed_values": None,
+        "imputation_method": None,
+        "raw_data": json.dumps(
+            reading,
+            ensure_ascii=False,
+        ),
+    }
+
+
+READING_INSERT = text(
+    """
+    INSERT INTO reading (
+        site_id,
+        timestamp,
+        source,
+        dataset_id,
+        consumption_kw,
+        consumption_kwh,
+        consumption_euros,
+        voltage_v,
+        current_a,
+        power_factor,
+        temperature_celsius,
+        humidity_percent,
+        solar_irradiance_wm2,
+        is_working_hours,
+        data_quality,
+        null_reasons,
+        imputed_values,
+        imputation_method,
+        raw_data
+    )
+    VALUES (
+        :site_id,
+        :timestamp,
+        :source,
+        :dataset_id,
+        :consumption_kw,
+        :consumption_kwh,
+        :consumption_euros,
+        :voltage_v,
+        :current_a,
+        :power_factor,
+        :temperature_celsius,
+        :humidity_percent,
+        :solar_irradiance_wm2,
+        :is_working_hours,
+        :data_quality,
+        :null_reasons,
+        CAST(:imputed_values AS jsonb),
+        :imputation_method,
+        CAST(:raw_data AS jsonb)
+    )
+    ON CONFLICT DO NOTHING
+    """
+)
+
+
+def build_reading_batch(
+    readings: list[dict[str, Any]],
+) -> list[dict[str, Any]]:
+    return [build_reading_row(reading) for reading in readings]
+
+
+async def import_mock_api_history(
+    start_time: datetime,
+    end_time: datetime,
+    limit: int,
+    dry_run: bool,
+) -> None:
+    settings = get_settings()
+
+    async with create_mock_api_client() as client:
+        sites = await fetch_sites(client)
+
+        print(f"Sites récupérés : {len(sites)}")
+
+        all_readings: list[dict[str, Any]] = []
+
+        for site in sites:
+            site_id = site["site_id"]
+
+            readings = await fetch_readings(
+                client=client,
+                site_id=site_id,
+                start_time=start_time,
+                end_time=end_time,
+                limit=limit,
+            )
+
+            print(f"{site_id}: {len(readings)} lectures")
+
+            all_readings.extend(readings)
+
+    print(f"Lectures récupérées : {len(all_readings)}")
+
+    if dry_run:
+        print("Dry-run terminé : aucune donnée écrite.")
+        return
+
+    engine = create_async_engine(
+        str(settings.database_url),
+        pool_pre_ping=True,
+    )
+
+    try:
+        async with engine.begin() as connection:
+            await upsert_sites(
+                connection,
+                sites,
+            )
+
+            rows = build_reading_batch(all_readings)
+
+            if rows:
+                await connection.execute(
+                    READING_INSERT,
+                    rows,
+                )
+
+    finally:
+        await engine.dispose()
+
+    print("Import API Mock terminé.")
+
+
+def parse_datetime(value: str) -> datetime:
+    return datetime.fromisoformat(value.replace("Z", "+00:00"))
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description=("Import historique depuis l'API Mock EnerVision"))
+
+    parser.add_argument(
+        "--start-time",
+        required=True,
+        type=parse_datetime,
+    )
+
+    parser.add_argument(
+        "--end-time",
+        required=True,
+        type=parse_datetime,
+    )
+
+    parser.add_argument(
+        "--limit",
+        type=int,
+        default=1000,
+    )
+
+    parser.add_argument(
+        "--dry-run",
+        action="store_true",
+    )
+
+    return parser.parse_args()
+
+
+def main() -> None:
+    args = parse_args()
+
+    if args.limit < 1 or args.limit > 1000:
+        raise ValueError("--limit doit être compris entre 1 et 1000.")
+
+    if args.start_time >= args.end_time:
+        raise ValueError("--start-time doit être antérieur à --end-time.")
+
+    asyncio.run(
+        import_mock_api_history(
+            start_time=args.start_time,
+            end_time=args.end_time,
+            limit=args.limit,
+            dry_run=args.dry_run,
+        )
+    )
+
+
+if __name__ == "__main__":
+    main()

apps/backend/app/main.py

@@ -1,9 +1,14 @@
 from collections.abc import AsyncIterator
 from contextlib import asynccontextmanager
+from pathlib import Path
 
 from fastapi import Depends, FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.openapi.docs import get_redoc_html, get_swagger_ui_html
+from fastapi.staticfiles import StaticFiles
 from prometheus_fastapi_instrumentator import Instrumentator
+from starlette.requests import Request
+from starlette.responses import HTMLResponse
 
 from app.api.errors import register_error_handlers
 from app.api.middleware import SecurityHeadersMiddleware
@@ -18,6 +23,8 @@ logger = get_logger(__name__)
 
 METHODES_AUTORISEES = ["GET", "POST", "PATCH", "PUT", "DELETE", "OPTIONS"]
 EN_TETES_AUTORISES = ["Authorization", "Content-Type"]
+STATIC_DIR = Path(__file__).parent / "static"
+LOGO_URL = "/static/logo-icon.png"
 
 
 @asynccontextmanager
@@ -43,11 +50,41 @@ def create_app(settings: Settings | None = None) -> FastAPI:
         openapi_tags=TAGS,
         debug=resolved.debug,
         lifespan=lifespan,
-        docs_url="/docs" if documentee else None,
+        docs_url=None,
-        redoc_url="/redoc" if documentee else None,
+        redoc_url=None,
         openapi_url="/openapi.json" if documentee else None,
     )
 
+    if documentee:
+        application.mount("/static", StaticFiles(directory=STATIC_DIR), name="static")
+
+        # ReDoc supporte nativement `info.x-logo` (extension Redocly) pour afficher un logo
+        # en en-tête ; Swagger UI n'a pas d'equivalent, il ne reprend que le favicon.
+        openapi_original = application.openapi
+
+        def openapi_avec_logo() -> dict[str, object]:
+            schema = openapi_original()
+            schema["info"]["x-logo"] = {"url": LOGO_URL, "altText": "EnerVision"}
+            return schema
+
+        application.openapi = openapi_avec_logo  # type: ignore[method-assign]
+
+        @application.get("/docs", include_in_schema=False)
+        async def docs_swagger(_: Request) -> HTMLResponse:
+            return get_swagger_ui_html(
+                openapi_url="/openapi.json",
+                title=f"{application.title} · Swagger UI",
+                swagger_favicon_url=LOGO_URL,
+            )
+
+        @application.get("/redoc", include_in_schema=False)
+        async def docs_redoc(_: Request) -> HTMLResponse:
+            return get_redoc_html(
+                openapi_url="/openapi.json",
+                title=f"{application.title} · ReDoc",
+                redoc_favicon_url=LOGO_URL,
+            )
+
     application.add_middleware(SecurityHeadersMiddleware)
 
     if resolved.allowed_origins:

apps/backend/app/repositories/alert.py

@@ -1,6 +1,7 @@
 from collections.abc import Sequence
 
 from sqlalchemy import select
+from sqlalchemy.dialects.postgresql import insert
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.models.energy import Alert
@@ -19,3 +20,36 @@ class AlertRepository:
         if severity is not None:
             requete = requete.where(Alert.severity == severity)
         return (await self._session.scalars(requete)).all()
+
+    async def create_many(self, alerts: Sequence[Alert]) -> Sequence[Alert]:
+        # `ON CONFLICT DO NOTHING` sur `uq_alert_source_reference` : rejouer la détection sur une
+        # fenêtre qui recouvre une exécution précédente ne doit pas dupliquer une alerte déjà
+        # enregistrée. `RETURNING` ne renvoie donc que les lignes effectivement insérées.
+        if not alerts:
+            return []
+        valeurs = [
+            {
+                "source_alert_id": alerte.source_alert_id,
+                "site_id": alerte.site_id,
+                "source": alerte.source,
+                "timestamp": alerte.timestamp,
+                "type": alerte.type,
+                "severity": alerte.severity,
+                "message": alerte.message,
+                "value": alerte.value,
+                "threshold": alerte.threshold,
+                "metric": alerte.metric,
+                "prediction_id": alerte.prediction_id,
+                "raw_data": alerte.raw_data,
+            }
+            for alerte in alerts
+        ]
+        requete = (
+            insert(Alert)
+            .values(valeurs)
+            .on_conflict_do_nothing(constraint="uq_alert_source_reference")
+            .returning(Alert)
+        )
+        resultat = await self._session.execute(requete)
+        await self._session.flush()
+        return resultat.scalars().all()

apps/backend/app/repositories/prediction.py

@@ -0,0 +1,49 @@
+from collections.abc import Sequence
+from datetime import datetime
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.energy import Prediction
+
+
+class PredictionRepository:
+    def __init__(self, session: AsyncSession) -> None:
+        self._session = session
+
+    async def list_since(
+        self, *, since: datetime, site_id: str | None = None
+    ) -> Sequence[Prediction]:
+        # Restreint à `available` : une prévision `insufficient_data`/`error` n'a pas de
+        # `predicted_value` à comparer à une lecture réelle (détection d'anomalie).
+        # Piège : `prediction` n'a pas d'unicité sur `(site_id, target_at)` (cf.
+        # `enervision_ml.score`, qui insère toujours une nouvelle ligne plutôt que d'écraser la
+        # précédente). `prediction_id` en dernier départage donc les égalités de `target_at` par
+        # ordre croissant : `_detect_anomaly` construit un dict qui garde le dernier rencontré,
+        # c'est-à-dire le run le plus récent plutôt qu'une ligne choisie au hasard par le plan
+        # d'exécution.
+        requete = (
+            select(Prediction)
+            .where(Prediction.target_at >= since, Prediction.status == "available")
+            .order_by(Prediction.site_id, Prediction.target_at, Prediction.prediction_id)
+        )
+        if site_id is not None:
+            requete = requete.where(Prediction.site_id == site_id)
+        return (await self._session.scalars(requete)).all()
+
+    async def latest_by_site(self) -> Sequence[Prediction]:
+        # `.distinct(site_id)` compile en `DISTINCT ON (site_id)` sous PostgreSQL : une seule
+        # ligne par site, la plus récente grâce à l'ordre composite qui suit. Même mécanisme que
+        # `ReadingRepository.latest_by_site`. Trié sur `target_at` (couvert par
+        # `ix_prediction_site_target`) plutôt que `created_at` : c'est la prévision la plus
+        # récente qui compte pour un tableau de bord, pas forcément le dernier run de scoring.
+        requete = (
+            select(Prediction)
+            .distinct(Prediction.site_id)
+            .order_by(
+                Prediction.site_id,
+                Prediction.target_at.desc(),
+                Prediction.prediction_id.desc(),
+            )
+        )
+        return (await self._session.scalars(requete)).all()

apps/backend/app/repositories/reading.py

@@ -13,14 +13,42 @@ class ReadingRepository:
 
     async def latest_by_site(self) -> Sequence[Reading]:
         # `.distinct(site_id)` compile en `DISTINCT ON (site_id)` sous PostgreSQL : une seule
-        # ligne par site, la plus récente grâce à l'ordre composite qui suit.
+        # ligne par site, la plus récente grâce à l'ordre composite qui suit. `reading_id` départage
+        # les égalités de timestamp, que `uq_reading_source` autorise à `source` différente.
         requete = (
             select(Reading)
             .distinct(Reading.site_id)
-            .order_by(Reading.site_id, Reading.timestamp.desc())
+            .order_by(Reading.site_id, Reading.timestamp.desc(), Reading.reading_id.desc())
         )
         return (await self._session.execute(requete)).scalars().all()
 
+    async def latest_for_site(self, site_id: str) -> Reading | None:
+        # Piège : `uq_reading_source` autorise deux lignes au même `site_id`+`timestamp` quand la
+        # `source` diffère. Sans `reading_id` en départage, le `LIMIT 1` renverrait au hasard.
+        requete = (
+            select(Reading)
+            .where(Reading.site_id == site_id)
+            .order_by(Reading.timestamp.desc(), Reading.reading_id.desc())
+            .limit(1)
+        )
+        lecture: Reading | None = await self._session.scalar(requete)
+        return lecture
+
+    async def list_since(self, *, since: datetime, site_id: str | None = None) -> Sequence[Reading]:
+        # Trié par site puis par heure croissante : la détection d'alertes (spike) a besoin de
+        # comparer chaque lecture à celle qui la précède immédiatement pour le même site.
+        # `reading_id` en dernier départage : `uq_reading_source` autorise deux lignes au même
+        # `site_id`+`timestamp` quand la `source` diffère (même piège que `latest_for_site`), sans
+        # quoi l'ordre entre elles ne serait pas garanti d'un appel à l'autre.
+        requete = (
+            select(Reading)
+            .where(Reading.timestamp >= since)
+            .order_by(Reading.site_id, Reading.timestamp, Reading.reading_id)
+        )
+        if site_id is not None:
+            requete = requete.where(Reading.site_id == site_id)
+        return (await self._session.scalars(requete)).all()
+
     async def list_history(
         self,
         *,

apps/backend/app/schemas/prediction.py

@@ -0,0 +1,43 @@
+from datetime import datetime
+from enum import StrEnum
+
+from pydantic import BaseModel, ConfigDict
+
+
+class PredictionTargetMetric(StrEnum):
+    CONSUMPTION_KWH = "consumption_kwh"
+    CONSUMPTION_KW = "consumption_kw"
+
+
+class PredictionStatus(StrEnum):
+    AVAILABLE = "available"
+    INSUFFICIENT_DATA = "insufficient_data"
+    ERROR = "error"
+
+
+class SitePredictionResponse(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    target_at: datetime
+    target_metric: PredictionTargetMetric
+    period_minutes: int | None
+    predicted_value: float | None
+    status: PredictionStatus
+    failure_reason: str | None
+    model_reference: str
+    created_at: datetime
+
+
+class SitePredictionSummaryResponse(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    site_id: str
+    site_name: str
+    prediction: SitePredictionResponse | None
+
+
+class PredictionSummaryResponse(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    timestamp: datetime
+    sites: list[SitePredictionSummaryResponse]

apps/backend/app/schemas/site.py

@@ -1,3 +1,6 @@
+from datetime import datetime
+from typing import Literal
+
 from pydantic import BaseModel, ConfigDict
 
 
@@ -10,3 +13,20 @@ class SiteResponse(BaseModel):
     location: str | None
     capacity_kw: float | None
     status: str | None
+
+
+class SiteCurrentResponse(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    timestamp: datetime | None
+    site_id: str
+    site_type: str
+    consumption_kw: float | None
+    consumption_kwh: float | None
+    voltage_v: float | None
+    current_a: float | None
+    power_factor: float | None
+    temperature_celsius: float | None
+    humidity_percent: float | None
+    null_reasons: list[str]
+    data_quality: Literal["good", "partial", "degraded", "critical"]

apps/backend/app/services/alert.py

@@ -1,14 +1,323 @@
 from collections.abc import Sequence
+from datetime import UTC, datetime, timedelta
 
-from app.models.energy import Alert
+from app.models.energy import Alert, Prediction, Reading, Site
 from app.repositories.alert import AlertRepository
+from app.repositories.prediction import PredictionRepository
+from app.repositories.reading import ReadingRepository
+from app.repositories.site import SiteRepository
+
+# Fenêtre de lectures/prédictions analysée à chaque exécution : assez large pour couvrir une paire
+# de lectures consécutives (spike) et une coupure prolongée (outage), sans réanalyser tout
+# l'historique à chaque lancement manuel du script de détection.
+LOOKBACK = timedelta(hours=48)
+
+# Cadence nominale d'une lecture : le CSV historique comme l'API Mock livrent un pas horaire.
+EXPECTED_INTERVAL = timedelta(hours=1)
+# Au-delà de trois pas manqués, on parle de coupure plutôt que d'un simple retard d'ingestion.
+OUTAGE_THRESHOLD = EXPECTED_INTERVAL * 3
+
+# +/-50% entre deux lectures consécutives du même site.
+SPIKE_RELATIVE_THRESHOLD = 0.5
+# 30% d'écart entre la consommation réelle et la prévision du même site/instant.
+ANOMALY_RELATIVE_THRESHOLD = 0.3
+# Une prévision quasi nulle rend l'écart relatif ininterprétable ; on l'ignore plutôt.
+ANOMALY_MINIMUM_PREDICTED_VALUE = 1e-6
+
+THRESHOLD_METRIC = "consumption_kw"
+ANOMALY_METRIC = "consumption_kwh"
+# `data_quality` -> sévérité du capteur défaillant. `good` est volontairement absent : il ne
+# déclenche jamais d'alerte.
+QUALITE_VERS_SEVERITE: dict[str, str] = {
+    "partial": "low",
+    "degraded": "medium",
+    "critical": "critical",
+}
 
 
 class AlertService:
-    def __init__(self, *, alerts: AlertRepository) -> None:
+    def __init__(
+        self,
+        *,
+        alerts: AlertRepository,
+        readings: ReadingRepository,
+        predictions: PredictionRepository,
+        sites: SiteRepository,
+    ) -> None:
         self._alerts = alerts
+        self._readings = readings
+        self._predictions = predictions
+        self._sites = sites
 
     async def list_all(
         self, *, site_id: str | None = None, severity: str | None = None
     ) -> Sequence[Alert]:
         return await self._alerts.list_all(site_id=site_id, severity=severity)
+
+    async def detect(
+        self, *, now: datetime | None = None, site_id: str | None = None
+    ) -> Sequence[Alert]:
+        """Compare les lectures/prévisions récentes aux cinq règles internes et enregistre les
+        alertes déclenchées (`source='enervision'`). Idempotent grâce à `source_alert_id` :
+        rejouer sur une fenêtre déjà analysée ne recrée pas les mêmes lignes."""
+        instant = now or datetime.now(UTC)
+        depuis = instant - LOOKBACK
+
+        sites = await self._sites.list_all()
+        if site_id is not None:
+            sites = [site for site in sites if site.site_id == site_id]
+        sites_par_id = {site.site_id: site for site in sites}
+        if not sites_par_id:
+            return []
+
+        lectures = [
+            lecture
+            for lecture in await self._readings.list_since(since=depuis, site_id=site_id)
+            if lecture.site_id in sites_par_id
+        ]
+        predictions = [
+            prediction
+            for prediction in await self._predictions.list_since(since=depuis, site_id=site_id)
+            if prediction.site_id in sites_par_id
+        ]
+        dernieres_lectures = {
+            lecture.site_id: lecture
+            for lecture in await self._readings.latest_by_site()
+            if lecture.site_id in sites_par_id
+        }
+
+        candidates = [
+            *_detect_threshold(lectures, sites_par_id),
+            *_detect_spike(lectures),
+            *_detect_anomaly(lectures, predictions),
+            *_detect_outage(sites, dernieres_lectures, instant),
+            *_detect_sensor(lectures),
+        ]
+        if not candidates:
+            return []
+        return await self._alerts.create_many(candidates)
+
+
+def _severity_from_ratio(ratio: float) -> str:
+    if ratio >= 2.0:
+        return "critical"
+    if ratio >= 1.5:
+        return "high"
+    if ratio >= 1.2:
+        return "medium"
+    return "low"
+
+
+def _detect_threshold(lectures: Sequence[Reading], sites_par_id: dict[str, Site]) -> list[Alert]:
+    # Seuil fixe = la capacité déclarée du site : dépasser `capacity_kw` est un dépassement
+    # matériel, pas une simple variation, et évite un seuil arbitraire non fourni par le domaine.
+    alertes = []
+    for lecture in lectures:
+        site = sites_par_id[lecture.site_id]
+        valeur = lecture.consumption_kw
+        if site.capacity_kw is None or site.capacity_kw <= 0 or valeur is None:
+            continue
+        if valeur <= site.capacity_kw:
+            continue
+        alertes.append(
+            Alert(
+                source_alert_id=f"threshold:{THRESHOLD_METRIC}:{lecture.timestamp.isoformat()}",
+                site_id=lecture.site_id,
+                source="enervision",
+                timestamp=lecture.timestamp,
+                type="threshold",
+                severity=_severity_from_ratio(valeur / site.capacity_kw),
+                message=(
+                    f"Puissance appelée {valeur:.1f} kW au-dessus de la capacité du site "
+                    f"({site.capacity_kw:.1f} kW)"
+                ),
+                value=valeur,
+                threshold=site.capacity_kw,
+                metric=THRESHOLD_METRIC,
+                prediction_id=None,
+                raw_data={},
+            )
+        )
+    return alertes
+
+
+def _detect_spike(lectures: Sequence[Reading]) -> list[Alert]:
+    # `lectures` est triée par site, heure puis `reading_id` (cf. `ReadingRepository.list_since`) :
+    # deux lignes consécutives du même site sont donc deux mesures consécutives dans le temps,
+    # sauf lorsqu'elles partagent le même horodatage (deux `source` différentes pour le même
+    # instant, permises par `uq_reading_source`) : ce n'est alors pas une variation réelle, on
+    # l'ignore plutôt que de générer une fausse alerte figée par son `source_alert_id`.
+    alertes = []
+    precedente: Reading | None = None
+    for lecture in lectures:
+        if (
+            precedente is None
+            or precedente.site_id != lecture.site_id
+            or precedente.timestamp == lecture.timestamp
+        ):
+            precedente = lecture
+            continue
+        avant, apres = precedente.consumption_kw, lecture.consumption_kw
+        precedente = lecture
+        if avant is None or apres is None:
+            continue
+        if avant == 0:
+            # Une variation relative n'a pas de sens depuis zéro, mais un redémarrage direct à
+            # une consommation positive reste le signal le plus alarmant du lot : `critical`
+            # plutôt qu'un ratio indéfini.
+            if apres > 0:
+                alertes.append(_spike_alert(lecture, avant, apres, severity="critical"))
+            continue
+        variation = abs(apres - avant) / abs(avant)
+        if variation < SPIKE_RELATIVE_THRESHOLD:
+            continue
+        alertes.append(
+            _spike_alert(
+                lecture,
+                avant,
+                apres,
+                severity=_severity_from_ratio(variation / SPIKE_RELATIVE_THRESHOLD),
+            )
+        )
+    return alertes
+
+
+def _spike_alert(lecture: Reading, avant: float, apres: float, *, severity: str) -> Alert:
+    return Alert(
+        source_alert_id=f"spike:{THRESHOLD_METRIC}:{lecture.timestamp.isoformat()}",
+        site_id=lecture.site_id,
+        source="enervision",
+        timestamp=lecture.timestamp,
+        type="spike",
+        severity=severity,
+        message=(
+            f"Variation brutale entre deux lectures consécutives ({avant:.1f} kW -> {apres:.1f} kW)"
+        ),
+        value=apres,
+        threshold=avant,
+        metric=THRESHOLD_METRIC,
+        prediction_id=None,
+        raw_data={},
+    )
+
+
+def _detect_anomaly(lectures: Sequence[Reading], predictions: Sequence[Prediction]) -> list[Alert]:
+    # Alignement strict (site_id, target_at == timestamp) : `enervision_ml.score` produit une
+    # cible à l'heure pile suivant la dernière lecture, sur la même grille horaire que `reading`.
+    predictions_par_cle = {
+        (prediction.site_id, prediction.target_at): prediction
+        for prediction in predictions
+        if prediction.target_metric == ANOMALY_METRIC
+    }
+    alertes = []
+    for lecture in lectures:
+        prediction = predictions_par_cle.get((lecture.site_id, lecture.timestamp))
+        reel = lecture.consumption_kwh
+        if prediction is None or reel is None or prediction.predicted_value is None:
+            continue
+        predite = prediction.predicted_value
+        if abs(predite) < ANOMALY_MINIMUM_PREDICTED_VALUE:
+            continue
+        ecart = abs(reel - predite) / abs(predite)
+        if ecart < ANOMALY_RELATIVE_THRESHOLD:
+            continue
+        alertes.append(
+            Alert(
+                source_alert_id=f"anomaly:{ANOMALY_METRIC}:{lecture.timestamp.isoformat()}",
+                site_id=lecture.site_id,
+                source="enervision",
+                timestamp=lecture.timestamp,
+                type="anomaly",
+                severity=_severity_from_ratio(ecart / ANOMALY_RELATIVE_THRESHOLD),
+                message=(
+                    f"Écart de {ecart * 100:.0f}% entre la consommation mesurée ({reel:.1f} kWh) "
+                    f"et la prévision ({predite:.1f} kWh)"
+                ),
+                value=reel,
+                threshold=predite,
+                metric=ANOMALY_METRIC,
+                prediction_id=prediction.prediction_id,
+                raw_data={},
+            )
+        )
+    return alertes
+
+
+def _detect_outage(
+    sites: Sequence[Site], dernieres_lectures: dict[str, Reading], now: datetime
+) -> list[Alert]:
+    alertes = []
+    for site in sites:
+        derniere = dernieres_lectures.get(site.site_id)
+        if derniere is None:
+            alertes.append(
+                _outage_alert(
+                    site.site_id,
+                    now,
+                    reference=None,
+                    message="Aucune lecture n'a jamais été reçue pour ce site",
+                    severity="critical",
+                )
+            )
+            continue
+        absence = now - derniere.timestamp
+        if absence < OUTAGE_THRESHOLD:
+            continue
+        alertes.append(
+            _outage_alert(
+                site.site_id,
+                now,
+                reference=derniere.timestamp,
+                message=(
+                    f"Aucune lecture depuis {absence} (dernière lecture : "
+                    f"{derniere.timestamp.isoformat()})"
+                ),
+                severity=_severity_from_ratio(absence / OUTAGE_THRESHOLD),
+            )
+        )
+    return alertes
+
+
+def _outage_alert(
+    site_id: str, now: datetime, *, reference: datetime | None, message: str, severity: str
+) -> Alert:
+    return Alert(
+        source_alert_id=f"outage:{reference.isoformat() if reference is not None else 'jamais'}",
+        site_id=site_id,
+        source="enervision",
+        timestamp=now,
+        type="outage",
+        severity=severity,
+        message=message,
+        value=None,
+        threshold=None,
+        metric=None,
+        prediction_id=None,
+        raw_data={},
+    )
+
+
+def _detect_sensor(lectures: Sequence[Reading]) -> list[Alert]:
+    alertes = []
+    for lecture in lectures:
+        severite = QUALITE_VERS_SEVERITE.get(lecture.data_quality or "")
+        if severite is None:
+            continue
+        raisons = ", ".join(lecture.null_reasons or []) or "raison non précisée"
+        alertes.append(
+            Alert(
+                source_alert_id=f"sensor:{lecture.timestamp.isoformat()}",
+                site_id=lecture.site_id,
+                source="enervision",
+                timestamp=lecture.timestamp,
+                type="sensor",
+                severity=severite,
+                message=f"Qualité de mesure {lecture.data_quality} ({raisons})",
+                value=None,
+                threshold=None,
+                metric=None,
+                prediction_id=None,
+                raw_data={},
+            )
+        )
+    return alertes

apps/backend/app/services/data_quality.py

@@ -0,0 +1,18 @@
+# Contrainte : `ck_reading_quality` accepte NULL et quatre valeurs seulement, alors que le contrat
+# frontend n'a aucune valeur pour l'absence de qualité. `qualite_ou_critique()` replie donc sur
+# `critical`, la seule des quatre qui n'induise pas une confiance qu'on n'a pas. `QUALITES_CONNUES`
+# reste exposé pour les appelants qui doivent distinguer un `critical` stocké d'un repli.
+
+from typing import Literal, get_args
+
+DataQuality = Literal["good", "partial", "degraded", "critical"]
+
+QUALITES_CONNUES: frozenset[str] = frozenset(get_args(DataQuality))
+
+_PAR_VALEUR: dict[str, DataQuality] = {valeur: valeur for valeur in get_args(DataQuality)}
+
+
+def qualite_ou_critique(valeur: str | None) -> DataQuality:
+    if valeur is None:
+        return "critical"
+    return _PAR_VALEUR.get(valeur, "critical")

apps/backend/app/services/prediction.py

@@ -0,0 +1,68 @@
+from dataclasses import dataclass
+from datetime import UTC, datetime
+
+from app.models.energy import Prediction, Site
+from app.repositories.prediction import PredictionRepository
+from app.repositories.site import SiteRepository
+
+
+@dataclass(frozen=True, slots=True)
+class SitePrediction:
+    target_at: datetime
+    target_metric: str
+    period_minutes: int | None
+    predicted_value: float | None
+    status: str
+    failure_reason: str | None
+    model_reference: str
+    created_at: datetime
+
+
+@dataclass(frozen=True, slots=True)
+class SitePredictionSummary:
+    site_id: str
+    site_name: str
+    prediction: SitePrediction | None
+
+
+@dataclass(frozen=True, slots=True)
+class PredictionSummary:
+    timestamp: datetime
+    sites: list[SitePredictionSummary]
+
+
+class PredictionService:
+    def __init__(self, sites: SiteRepository, predictions: PredictionRepository) -> None:
+        self._sites = sites
+        self._predictions = predictions
+
+    async def summary(self) -> PredictionSummary:
+        sites = await self._sites.list_all()
+        dernieres = {p.site_id: p for p in await self._predictions.latest_by_site()}
+
+        return PredictionSummary(
+            timestamp=datetime.now(UTC),
+            sites=[_resume_site(site, dernieres.get(site.site_id)) for site in sites],
+        )
+
+
+def _resume_site(site: Site, derniere: Prediction | None) -> SitePredictionSummary:
+    # Piège : l'absence de ligne signifie « jamais scoré », pas une valeur pseudo-statut, qui
+    # n'existe pas dans la contrainte de la table. `prediction` reste `None` plutôt que de
+    # fabriquer un statut absent du domaine `available`/`insufficient_data`/`error`.
+    prediction = None
+    if derniere is not None:
+        prediction = SitePrediction(
+            target_at=derniere.target_at,
+            target_metric=derniere.target_metric,
+            period_minutes=derniere.period_minutes,
+            predicted_value=derniere.predicted_value,
+            status=derniere.status,
+            failure_reason=derniere.failure_reason,
+            model_reference=derniere.model_reference,
+            created_at=derniere.created_at,
+        )
+
+    return SitePredictionSummary(
+        site_id=site.site_id, site_name=site.site_name, prediction=prediction
+    )

apps/backend/app/services/sensor.py

@@ -5,12 +5,11 @@ from typing import Literal
 from app.models.energy import Reading, Site
 from app.repositories.reading import ReadingRepository
 from app.repositories.site import SiteRepository
+from app.services.data_quality import qualite_ou_critique
 
 CapteurStatus = Literal["ok", "failing"]
 OverallStatus = Literal["ok", "degraded", "critical"]
 
-QUALITES_CONNUES: frozenset[str] = frozenset({"good", "partial", "degraded", "critical"})
-
 RAISON_VERS_CAPTEUR: dict[str, str] = {
     "consumption_sensor_failure": "consumption",
     "electrical_sensor_failure": "electrical",
@@ -80,7 +79,7 @@ def _sante_site(site: Site, derniere: Reading | None) -> SanteSite:
             overall="critical",
         )
 
-    qualite = derniere.data_quality if derniere.data_quality in QUALITES_CONNUES else "critical"
+    qualite = qualite_ou_critique(derniere.data_quality)
     overall = _overall_depuis_qualite(qualite)
 
     if overall == "critical":

apps/backend/app/services/site.py

@@ -1,7 +1,11 @@
 from collections.abc import Sequence
+from dataclasses import dataclass
+from datetime import datetime
 
 from app.models.energy import Site
+from app.repositories.reading import ReadingRepository
 from app.repositories.site import SiteRepository
+from app.services.data_quality import DataQuality, qualite_ou_critique
 
 
 class SiteError(Exception):
@@ -12,9 +16,26 @@ class SiteNotFoundError(SiteError):
     pass
 
 
+@dataclass(frozen=True, slots=True)
+class SiteCurrentReading:
+    timestamp: datetime | None
+    site_id: str
+    site_type: str
+    consumption_kw: float | None
+    consumption_kwh: float | None
+    voltage_v: float | None
+    current_a: float | None
+    power_factor: float | None
+    temperature_celsius: float | None
+    humidity_percent: float | None
+    null_reasons: list[str]
+    data_quality: DataQuality
+
+
 class SiteService:
-    def __init__(self, *, sites: SiteRepository) -> None:
+    def __init__(self, *, sites: SiteRepository, readings: ReadingRepository) -> None:
         self._sites = sites
+        self._readings = readings
 
     async def list_all(self) -> Sequence[Site]:
         return await self._sites.list_all()
@@ -24,3 +45,38 @@ class SiteService:
         if site is None:
             raise SiteNotFoundError(site_id)
         return site
+
+    async def current(self, site_id: str) -> SiteCurrentReading:
+        site = await self.get_by_id(site_id)
+        derniere = await self._readings.latest_for_site(site_id)
+
+        if derniere is None:
+            return SiteCurrentReading(
+                timestamp=None,
+                site_id=site.site_id,
+                site_type=site.site_type,
+                consumption_kw=None,
+                consumption_kwh=None,
+                voltage_v=None,
+                current_a=None,
+                power_factor=None,
+                temperature_celsius=None,
+                humidity_percent=None,
+                null_reasons=[],
+                data_quality="critical",
+            )
+
+        return SiteCurrentReading(
+            timestamp=derniere.timestamp,
+            site_id=site.site_id,
+            site_type=site.site_type,
+            consumption_kw=derniere.consumption_kw,
+            consumption_kwh=derniere.consumption_kwh,
+            voltage_v=derniere.voltage_v,
+            current_a=derniere.current_a,
+            power_factor=derniere.power_factor,
+            temperature_celsius=derniere.temperature_celsius,
+            humidity_percent=derniere.humidity_percent,
+            null_reasons=derniere.null_reasons or [],
+            data_quality=qualite_ou_critique(derniere.data_quality),
+        )

apps/backend/app/services/stats.py

@@ -1,14 +1,10 @@
 from dataclasses import dataclass
 from datetime import UTC, datetime
-from typing import Literal
 
 from app.models.energy import Reading, Site
 from app.repositories.reading import ReadingRepository
 from app.repositories.site import SiteRepository
-
+from app.services.data_quality import QUALITES_CONNUES, DataQuality, qualite_ou_critique
-DataQuality = Literal["good", "partial", "degraded", "critical"]
-
-QUALITES_CONNUES: frozenset[str] = frozenset({"good", "partial", "degraded", "critical"})
 
 
 @dataclass(frozen=True, slots=True)
@@ -58,13 +54,10 @@ class StatsService:
     @staticmethod
     def _resume_site(site: Site, derniere: Reading | None) -> SiteConsumption:
         capacite = site.capacity_kw or 0
-        # Piège : `data_quality` est nul dès qu'un site n'a jamais reçu de lecture, ou que le
-        # producteur n'a pas su la qualifier. Le contrat frontend n'a pas de valeur pour ce cas,
-        # `critical` est la seule des quatre qui n'induit pas une confiance qu'on n'a pas.
         qualite: DataQuality = "critical"
         consommation = None
         if derniere is not None and derniere.data_quality in QUALITES_CONNUES:
-            qualite = derniere.data_quality  # type: ignore[assignment]
+            qualite = qualite_ou_critique(derniere.data_quality)
             consommation = derniere.consumption_kw
 
         charge = (

apps/backend/openapi.json

@@ -4,7 +4,11 @@
     "title": "EnerVision API",
     "summary": "Collecte, analyse et restitution de séries temporelles énergétiques.",
     "description": "\nToutes les routes sont préfixées par `/api/v1`.\n\n**Authentification.** Le jeton d'accès se présente dans l'en-tête `Authorization: Bearer ...`.\nLe jeton de rafraîchissement est un cookie `HttpOnly` que le code client ne voit jamais : il\nsuffit d'émettre les requêtes avec les identifiants de session. `POST /auth/refresh` rend un\nnouveau jeton d'accès et fait tourner le cookie.\n\n**Rôles.** `lecteur`, puis `operateur`, puis `admin`. Chaque rôle couvre les droits du\nprécédent.\n\n**Erreurs.** Le corps porte toujours une clé `detail`. Un `403` dont le `detail` vaut\n`password_change_required` n'est pas un refus de droits : il exige le changement du mot de passe\nprovisoire avant toute autre action.\n\nLe parcours de session complet est décrit dans\n`docs/architecture/31-contrat-authentification.md`.\n",
-    "version": "0.1.0"
+    "version": "0.1.0",
+    "x-logo": {
+      "url": "/static/logo-icon.png",
+      "altText": "EnerVision"
+    }
   },
   "paths": {
     "/api/v1/health/live": {
@@ -1111,6 +1115,93 @@
         }
       }
     },
+    "/api/v1/sites/{site_id}/current": {
+      "get": {
+        "tags": [
+          "sites"
+        ],
+        "summary": "Dernière mesure d'un site",
+        "operationId": "get_current_api_v1_sites__site_id__current_get",
+        "security": [
+          {
+            "Jeton d'accès": []
+          }
+        ],
+        "parameters": [
+          {
+            "name": "site_id",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string",
+              "title": "Site Id"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/SiteCurrentResponse"
+                }
+              }
+            }
+          },
+          "500": {
+            "description": "Erreur interne. `correlation` identifie la trace côté serveur, qui n'est pas renvoyée au client.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/InternalErrorResponse"
+                }
+              }
+            }
+          },
+          "401": {
+            "description": "Jeton absent, illisible, périmé, ou rendu caduc par un changement de rôle ou une désactivation. L'en-tête `WWW-Authenticate` porte la cause dans `error=`.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "403": {
+            "description": "Mot de passe provisoire à changer (`detail` vaut `password_change_required`).",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "422": {
+            "description": "Corps invalide. Le détail nomme le champ fautif et le type d'erreur, jamais la valeur envoyée.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ValidationErrorResponse"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "Aucun site ne porte cet identifiant.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/api/v1/alerts": {
       "get": {
         "tags": [
@@ -1628,6 +1719,62 @@
           }
         ]
       }
+    },
+    "/api/v1/predictions": {
+      "get": {
+        "tags": [
+          "predictions"
+        ],
+        "summary": "Dernière prédiction de consommation par site",
+        "operationId": "get_predictions_api_v1_predictions_get",
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/PredictionSummaryResponse"
+                }
+              }
+            }
+          },
+          "500": {
+            "description": "Erreur interne. `correlation` identifie la trace côté serveur, qui n'est pas renvoyée au client.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/InternalErrorResponse"
+                }
+              }
+            }
+          },
+          "401": {
+            "description": "Jeton absent, illisible, périmé, ou rendu caduc par un changement de rôle ou une désactivation. L'en-tête `WWW-Authenticate` porte la cause dans `error=`.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "403": {
+            "description": "Mot de passe provisoire à changer (`detail` vaut `password_change_required`).",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          }
+        },
+        "security": [
+          {
+            "Jeton d'accès": []
+          }
+        ]
+      }
     }
   },
   "components": {
@@ -1881,6 +2028,45 @@
         ],
         "title": "PasswordChangeRequest"
       },
+      "PredictionStatus": {
+        "type": "string",
+        "enum": [
+          "available",
+          "insufficient_data",
+          "error"
+        ],
+        "title": "PredictionStatus"
+      },
+      "PredictionSummaryResponse": {
+        "properties": {
+          "timestamp": {
+            "type": "string",
+            "format": "date-time",
+            "title": "Timestamp"
+          },
+          "sites": {
+            "items": {
+              "$ref": "#/components/schemas/SitePredictionSummaryResponse"
+            },
+            "type": "array",
+            "title": "Sites"
+          }
+        },
+        "type": "object",
+        "required": [
+          "timestamp",
+          "sites"
+        ],
+        "title": "PredictionSummaryResponse"
+      },
+      "PredictionTargetMetric": {
+        "type": "string",
+        "enum": [
+          "consumption_kwh",
+          "consumption_kw"
+        ],
+        "title": "PredictionTargetMetric"
+      },
       "PrincipalResponse": {
         "properties": {
           "id": {
@@ -2293,6 +2479,238 @@
         ],
         "title": "SensorStatusResponse"
       },
+      "SiteCurrentResponse": {
+        "properties": {
+          "timestamp": {
+            "anyOf": [
+              {
+                "type": "string",
+                "format": "date-time"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Timestamp"
+          },
+          "site_id": {
+            "type": "string",
+            "title": "Site Id"
+          },
+          "site_type": {
+            "type": "string",
+            "title": "Site Type"
+          },
+          "consumption_kw": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Consumption Kw"
+          },
+          "consumption_kwh": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Consumption Kwh"
+          },
+          "voltage_v": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Voltage V"
+          },
+          "current_a": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Current A"
+          },
+          "power_factor": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Power Factor"
+          },
+          "temperature_celsius": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Temperature Celsius"
+          },
+          "humidity_percent": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Humidity Percent"
+          },
+          "null_reasons": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array",
+            "title": "Null Reasons"
+          },
+          "data_quality": {
+            "type": "string",
+            "enum": [
+              "good",
+              "partial",
+              "degraded",
+              "critical"
+            ],
+            "title": "Data Quality"
+          }
+        },
+        "type": "object",
+        "required": [
+          "timestamp",
+          "site_id",
+          "site_type",
+          "consumption_kw",
+          "consumption_kwh",
+          "voltage_v",
+          "current_a",
+          "power_factor",
+          "temperature_celsius",
+          "humidity_percent",
+          "null_reasons",
+          "data_quality"
+        ],
+        "title": "SiteCurrentResponse"
+      },
+      "SitePredictionResponse": {
+        "properties": {
+          "target_at": {
+            "type": "string",
+            "format": "date-time",
+            "title": "Target At"
+          },
+          "target_metric": {
+            "$ref": "#/components/schemas/PredictionTargetMetric"
+          },
+          "period_minutes": {
+            "anyOf": [
+              {
+                "type": "integer"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Period Minutes"
+          },
+          "predicted_value": {
+            "anyOf": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Predicted Value"
+          },
+          "status": {
+            "$ref": "#/components/schemas/PredictionStatus"
+          },
+          "failure_reason": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "title": "Failure Reason"
+          },
+          "model_reference": {
+            "type": "string",
+            "title": "Model Reference"
+          },
+          "created_at": {
+            "type": "string",
+            "format": "date-time",
+            "title": "Created At"
+          }
+        },
+        "type": "object",
+        "required": [
+          "target_at",
+          "target_metric",
+          "period_minutes",
+          "predicted_value",
+          "status",
+          "failure_reason",
+          "model_reference",
+          "created_at"
+        ],
+        "title": "SitePredictionResponse"
+      },
+      "SitePredictionSummaryResponse": {
+        "properties": {
+          "site_id": {
+            "type": "string",
+            "title": "Site Id"
+          },
+          "site_name": {
+            "type": "string",
+            "title": "Site Name"
+          },
+          "prediction": {
+            "anyOf": [
+              {
+                "$ref": "#/components/schemas/SitePredictionResponse"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          }
+        },
+        "type": "object",
+        "required": [
+          "site_id",
+          "site_name",
+          "prediction"
+        ],
+        "title": "SitePredictionSummaryResponse"
+      },
       "SiteResponse": {
         "properties": {
           "site_id": {
@@ -2748,6 +3166,10 @@
     {
       "name": "sensors",
       "description": "État de santé des capteurs par site. Réservé au rôle `admin`."
+    },
+    {
+      "name": "predictions",
+      "description": "Dernière prévision de consommation par site, calculée hors ligne par le pipeline de scoring (`ml/`) et simplement lue ici. Accessible à partir du rôle `lecteur`."
     }
   ]
 }

apps/backend/pyproject.toml

@@ -17,6 +17,7 @@ dependencies = [
     "argon2-cffi>=23.1",
     "anyio>=4.0",
     "aiosmtplib>=5.1.3",
+    "httpx>=0.28.1",
     "pandas>=3.0.5",
 ]
 
@@ -27,7 +28,6 @@ dev = [
     "pytest>=9.1.1",
     "pytest-asyncio>=1.4.0",
     "pytest-cov>=7.1.0",
-    "httpx>=0.28.1",
     "pandas-stubs>=3.0.5.260914",
 ]
 

apps/backend/tests/api/acces.py

@@ -0,0 +1,87 @@
+# Pourquoi : classification unique des routes du contrat, lue par test_route_protection.py,
+# test_openapi.py et test_matrice_acces.py. Trois listes séparées dérivaient auparavant chacune
+# de leur côté, et deux entrées de ROUTES_A_ROLE ne correspondaient plus à aucune route sans que
+# rien ne le signale.
+# Piège : les trois ensembles doivent rester disjoints et couvrir tout le schéma. C'est
+# `test_every_declared_route_is_classified` qui le vérifie, pas la relecture.
+
+from typing import Final
+
+from app.core.roles import Role
+
+Route = tuple[str, str]
+
+ROUTES_PUBLIQUES: Final[frozenset[Route]] = frozenset(
+    {
+        ("GET", "/api/v1/health/live"),
+        ("GET", "/api/v1/health/ready"),
+        ("POST", "/api/v1/auth/login"),
+        # Sans cookie, la déconnexion ne fait rien et répond 204 : elle est idempotente.
+        ("POST", "/api/v1/auth/logout"),
+        ("POST", "/api/v1/auth/forgot-password"),
+        # Protégée par le jeton dans le corps de la requête, pas par un `Principal` : aucune
+        # authentification préalable ne s'applique, c'est la validité du jeton qui tranche.
+        ("POST", "/api/v1/auth/reset-password"),
+        # Même raison : lecture seule, protégée par le jeton passé en paramètre, pas par un
+        # `Principal`. Le jeton est un secret de 256 bits, non brute-forçable.
+        ("GET", "/api/v1/auth/reset-password/validate"),
+        ("GET", "/metrics"),
+    }
+)
+
+# Le cookie opaque porte seul l'autorisation : sans lui la route rend 401, mais aucun `Principal`
+# n'est construit et `require_role` n'entre jamais en jeu.
+ROUTE_COOKIE: Final[frozenset[Route]] = frozenset({("POST", "/api/v1/auth/refresh")})
+
+# Authentifiées par `CurrentPrincipalDep` nu, donc hors de `require_role` et, avec lui, hors du
+# refus `password_change_required`. Volontaire pour `/auth/password`, qui est la sortie de l'état
+# provisoire ; subi pour `/auth/logout-all`, cf. test_matrice_acces.py.
+ROUTES_SANS_ROLE: Final[frozenset[Route]] = frozenset(
+    {
+        ("GET", "/api/v1/auth/me"),
+        ("POST", "/api/v1/auth/password"),
+        ("POST", "/api/v1/auth/logout-all"),
+    }
+)
+
+ROLE_MINIMUM: Final[dict[Route, Role]] = {
+    ("GET", "/api/v1/sites"): Role.LECTEUR,
+    ("GET", "/api/v1/sites/{site_id}"): Role.LECTEUR,
+    ("GET", "/api/v1/sites/{site_id}/current"): Role.LECTEUR,
+    ("GET", "/api/v1/alerts"): Role.LECTEUR,
+    ("GET", "/api/v1/recommendations"): Role.LECTEUR,
+    ("GET", "/api/v1/recommendations/{recommendation_id}"): Role.LECTEUR,
+    ("GET", "/api/v1/stats/summary"): Role.LECTEUR,
+    ("GET", "/api/v1/readings"): Role.LECTEUR,
+    ("GET", "/api/v1/predictions"): Role.LECTEUR,
+    ("GET", "/api/v1/sensors/status"): Role.ADMIN,
+    ("GET", "/api/v1/users"): Role.ADMIN,
+    ("POST", "/api/v1/users"): Role.ADMIN,
+    ("PATCH", "/api/v1/users/{user_id}"): Role.ADMIN,
+    ("POST", "/api/v1/users/{user_id}/password-reset"): Role.ADMIN,
+}
+
+# Piège : `{recommendation_id}` est typé `int` et `{user_id}` est un UUID. Une substitution
+# uniforme par une chaîne quelconque rendrait 422 avant d'atteindre la garde de rôle, et le test
+# passerait en prouvant autre chose que ce qu'il annonce.
+SUBSTITUTIONS: Final[dict[str, str]] = {
+    "{user_id}": "00000000-0000-0000-0000-000000000000",
+    "{site_id}": "site-absent-du-jeu-de-donnees",
+    "{recommendation_id}": "999999999",
+}
+
+
+def chemin_concret(chemin: str) -> str:
+    for gabarit, valeur in SUBSTITUTIONS.items():
+        chemin = chemin.replace(gabarit, valeur)
+    return chemin
+
+
+def routes_du_schema(schema: dict[str, object]) -> list[Route]:
+    chemins: dict[str, dict[str, object]] = schema["paths"]  # type: ignore[assignment]
+    return [
+        (methode.upper(), chemin)
+        for chemin, operations in chemins.items()
+        for methode in operations
+        if methode.upper() in {"GET", "POST", "PATCH", "PUT", "DELETE"}
+    ]

apps/backend/tests/api/test_matrice_acces.py

@@ -0,0 +1,279 @@
+# Pourquoi : la matrice rôle x route sur les routes réelles. `test_authorization.py` la joue déjà,
+# mais contre une route jetable montée par une fixture, ce qui ne dit rien du niveau effectivement
+# posé sur `/sites` ou `/users`. `ROLE_MINIMUM` (tests/api/acces.py) est la référence, et ce
+# fichier est ce qui la confronte au comportement observé.
+# Piège : l'assertion porte sur le refus de la garde, pas sur un 200. Un rôle suffisant peut
+# légitimement recevoir 404 ou 422 selon les données ; ce qui compte est qu'il ne reçoive pas le
+# 403 `Droits insuffisants`. Sans cette nuance, le test dépendrait du contenu de la base.
+# Les tests `integration` en fin de fichier rejouent la même matrice avec de vrais jetons, donc en
+# traversant le décodage du JWT et la relecture du compte, ce que l'override court-circuite.
+
+import uuid
+from collections.abc import AsyncIterator, Callable, Iterator
+
+import pytest
+from fastapi import FastAPI
+from httpx import AsyncClient, Response
+from sqlalchemy import text
+
+from app.api.deps import get_current_principal
+from app.core.hashing import build_hasher
+from app.core.principal import Principal
+from app.core.roles import AccountKind, Role, has_at_least
+from app.db.session import get_session, get_session_factory
+from app.repositories.user import UserRepository
+from tests.api.acces import ROLE_MINIMUM, chemin_concret
+
+ROLES = [Role.LECTEUR, Role.OPERATEUR, Role.ADMIN]
+IDS_DE_ROLE = ["lecteur", "operateur", "admin"]
+REFUS_DE_DROITS = "Droits insuffisants"
+REFUS_DE_MOT_DE_PASSE = "password_change_required"
+MOT_DE_PASSE = "un-mot-de-passe-de-recette"
+
+
+# `FakeSession` de tests/factories.py rend un unique objet pour les trois formes d'appel, ce qui
+# suffit à un test d'endpoint ciblé mais pas à balayer 13 routes qui interrogent chacune la base
+# à sa façon. Ce double rend un résultat vide quelle que soit la forme demandée, pour que la
+# réponse observée vienne de la garde de rôle et jamais d'un double mal ajusté.
+class ResultatVide:
+    def scalars(self) -> ResultatVide:
+        return self
+
+    def all(self) -> list[object]:
+        return []
+
+    def first(self) -> None:
+        return None
+
+    def one_or_none(self) -> None:
+        return None
+
+    def scalar_one_or_none(self) -> None:
+        return None
+
+    def mappings(self) -> ResultatVide:
+        return self
+
+    def __iter__(self) -> Iterator[object]:
+        return iter(())
+
+
+class SessionMuette:
+    async def scalar(self, *_: object, **__: object) -> None:
+        return None
+
+    async def execute(self, *_: object, **__: object) -> ResultatVide:
+        return ResultatVide()
+
+    async def scalars(self, *_: object, **__: object) -> ResultatVide:
+        return ResultatVide()
+
+    async def get(self, *_: object, **__: object) -> None:
+        return None
+
+    async def flush(self) -> None:
+        return None
+
+    async def commit(self) -> None:
+        return None
+
+    async def rollback(self) -> None:
+        return None
+
+    def add(self, *_: object, **__: object) -> None:
+        return None
+
+
+@pytest.fixture
+def base_muette(app: FastAPI) -> None:
+    async def override() -> AsyncIterator[SessionMuette]:
+        yield SessionMuette()
+
+    app.dependency_overrides[get_session] = override
+
+
+def principal(role: Role, *, must_change_password: bool = False) -> Principal:
+    return Principal(
+        id=uuid.uuid4(),
+        email=f"matrice-{role.value}@enervision.fr",
+        role=role,
+        kind=AccountKind.HUMAIN,
+        must_change_password=must_change_password,
+    )
+
+
+@pytest.fixture
+def connecte(app: FastAPI) -> Iterator[Callable[[Principal], None]]:
+    def installe(acteur: Principal) -> None:
+        app.dependency_overrides[get_current_principal] = lambda: acteur
+
+    yield installe
+    app.dependency_overrides.pop(get_current_principal, None)
+
+
+async def appelle(client: AsyncClient, methode: str, chemin: str, **kwargs: object) -> Response:
+    return await client.request(methode, chemin_concret(chemin), json={}, **kwargs)  # type: ignore[arg-type]
+
+
+def motif_du_refus(response: Response) -> str | None:
+    if response.status_code != 403:
+        return None
+    detail = response.json().get("detail")
+    return detail if isinstance(detail, str) else None
+
+
+@pytest.mark.parametrize("role", ROLES, ids=IDS_DE_ROLE)
+async def test_a_role_below_the_minimum_is_refused_on_every_guarded_route(
+    connecte: Callable[[Principal], None],
+    client: AsyncClient,
+    base_muette: None,
+    role: Role,
+) -> None:
+    connecte(principal(role))
+    laissees_passer: list[tuple[str, str, int]] = []
+
+    for (methode, chemin), minimum in ROLE_MINIMUM.items():
+        if has_at_least(role, minimum):
+            continue
+        response = await appelle(client, methode, chemin)
+        if motif_du_refus(response) != REFUS_DE_DROITS:
+            laissees_passer.append((methode, chemin, response.status_code))
+
+    assert laissees_passer == []
+
+
+# Le pendant du test précédent : sans lui, une garde posée trop haut, par exemple `AdminDep` sur
+# `/sites`, ne ferait échouer aucun test du dépôt.
+@pytest.mark.parametrize("role", ROLES, ids=IDS_DE_ROLE)
+async def test_a_role_at_or_above_the_minimum_is_never_refused_by_the_guard(
+    connecte: Callable[[Principal], None],
+    client: AsyncClient,
+    base_muette: None,
+    role: Role,
+) -> None:
+    connecte(principal(role))
+    refusees: list[tuple[str, str]] = []
+
+    for (methode, chemin), minimum in ROLE_MINIMUM.items():
+        if not has_at_least(role, minimum):
+            continue
+        response = await appelle(client, methode, chemin)
+        if motif_du_refus(response) == REFUS_DE_DROITS:
+            refusees.append((methode, chemin))
+
+    assert refusees == []
+
+
+async def test_a_pending_password_change_is_refused_on_every_guarded_route(
+    connecte: Callable[[Principal], None],
+    client: AsyncClient,
+    base_muette: None,
+) -> None:
+    connecte(principal(Role.ADMIN, must_change_password=True))
+    laissees_passer: list[tuple[str, str, int]] = []
+
+    for methode, chemin in ROLE_MINIMUM:
+        response = await appelle(client, methode, chemin)
+        if motif_du_refus(response) != REFUS_DE_MOT_DE_PASSE:
+            laissees_passer.append((methode, chemin, response.status_code))
+
+    assert laissees_passer == []
+
+
+@pytest.fixture
+async def comptes_par_role() -> AsyncIterator[dict[Role, str]]:
+    marque = uuid.uuid4().hex[:12]
+    hacheur = build_hasher(time_cost=1, memory_cost_kib=8192, parallelism=1, max_concurrency=2)
+    empreinte = await hacheur.hash(MOT_DE_PASSE)
+    adresses = {role: f"matrice-{marque}-{role.value}@enervision.fr" for role in ROLES}
+
+    async with get_session_factory()() as session:
+        depot = UserRepository(session)
+        for role, email in adresses.items():
+            await depot.create(email=email, password_hash=empreinte, role=role)
+        await session.commit()
+
+    yield adresses
+
+    async with get_session_factory()() as session:
+        await session.execute(
+            text("delete from app_user where email like :motif"), {"motif": f"matrice-{marque}-%"}
+        )
+        await session.commit()
+
+
+async def authentifie(client: AsyncClient, email: str) -> dict[str, str]:
+    reponse = await client.post(
+        "/api/v1/auth/login", json={"email": email, "password": MOT_DE_PASSE}
+    )
+    assert reponse.status_code == 200, reponse.text
+    return {"Authorization": f"Bearer {reponse.json()['access_token']}"}
+
+
+@pytest.mark.integration
+@pytest.mark.parametrize("role", ROLES, ids=IDS_DE_ROLE)
+async def test_a_real_token_reaches_exactly_the_routes_of_its_rank(
+    comptes_par_role: dict[Role, str], client: AsyncClient, role: Role
+) -> None:
+    entetes = await authentifie(client, comptes_par_role[role])
+    ecarts: list[tuple[str, str, int, str]] = []
+
+    for (methode, chemin), minimum in ROLE_MINIMUM.items():
+        response = await appelle(client, methode, chemin, headers=entetes)
+        refuse = motif_du_refus(response) == REFUS_DE_DROITS
+        if refuse is has_at_least(role, minimum):
+            ecarts.append((methode, chemin, response.status_code, response.text[:120]))
+
+    assert ecarts == []
+
+
+# Contrainte : `operateur` n'ouvre aujourd'hui aucune route de plus que `lecteur`, faute d'écriture
+# métier dans l'API. Figer l'égalité rend la régression visible le jour où une route d'opérateur
+# arrive sans que `ROLE_MINIMUM` soit mis à jour.
+@pytest.mark.integration
+async def test_the_operator_rank_opens_nothing_more_than_the_reader_rank(
+    comptes_par_role: dict[Role, str], client: AsyncClient
+) -> None:
+    lecteur = await authentifie(client, comptes_par_role[Role.LECTEUR])
+    operateur = await authentifie(client, comptes_par_role[Role.OPERATEUR])
+    divergences: list[tuple[str, str]] = []
+
+    for methode, chemin in ROLE_MINIMUM:
+        cote_lecteur = await appelle(client, methode, chemin, headers=lecteur)
+        cote_operateur = await appelle(client, methode, chemin, headers=operateur)
+        if cote_lecteur.status_code != cote_operateur.status_code:
+            divergences.append((methode, chemin))
+
+    assert divergences == []
+
+
+# Piège : `/auth/logout-all` prend un `CurrentPrincipalDep` nu, donc elle échappe au gate
+# `must_change_password` que seul `require_role` applique. Comportement figé ici, pas corrigé.
+@pytest.mark.integration
+async def test_a_temporary_password_blocks_the_business_routes_but_not_logout_all(
+    client: AsyncClient,
+) -> None:
+    marque = uuid.uuid4().hex[:12]
+    email = f"matrice-{marque}-provisoire@enervision.fr"
+    hacheur = build_hasher(time_cost=1, memory_cost_kib=8192, parallelism=1, max_concurrency=2)
+    empreinte = await hacheur.hash(MOT_DE_PASSE)
+
+    async with get_session_factory()() as session:
+        await UserRepository(session).create(
+            email=email, password_hash=empreinte, role=Role.ADMIN, must_change_password=True
+        )
+        await session.commit()
+
+    try:
+        entetes = await authentifie(client, email)
+        sites = await client.get("/api/v1/sites", headers=entetes)
+        identite = await client.get("/api/v1/auth/me", headers=entetes)
+        fermeture = await client.post("/api/v1/auth/logout-all", headers=entetes)
+
+        assert motif_du_refus(sites) == REFUS_DE_MOT_DE_PASSE
+        assert identite.status_code == 200
+        assert fermeture.status_code == 204
+    finally:
+        async with get_session_factory()() as session:
+            await session.execute(text("delete from app_user where email = :e"), {"e": email})
+            await session.commit()

apps/backend/tests/api/test_openapi.py

@@ -8,6 +8,7 @@ from typing import Any
 import pytest
 
 from app import cli
+from tests.api.acces import ROLE_MINIMUM
 
 METHODES = {"get", "post", "patch", "put", "delete"}
 
@@ -24,20 +25,11 @@ ORIGINE_VERIFIEE = {
 
 # Toute route derrière `require_role` (LecteurDep, OperateurDep, AdminDep) peut rendre 403 pour
 # `password_change_required`, pas seulement les routes `admin`.
-ROUTES_A_ROLE = {
+# Piège : cette liste était recopiée ici, et deux de ses entrées portaient `{id}` là où le contrat
-    ("GET", "/api/v1/users"),
+# expose `{user_id}`. Elles ne correspondaient donc à aucune opération, et le test ci-dessous
-    ("POST", "/api/v1/users"),
+# passait au vert sans rien vérifier sur ces deux routes. Elle est maintenant dérivée, et
-    ("PATCH", "/api/v1/users/{id}"),
+# `test_every_declared_route_is_classified` interdit l'entrée morte.
-    ("POST", "/api/v1/users/{id}/password-reset"),
+ROUTES_A_ROLE = frozenset(ROLE_MINIMUM)
-    ("GET", "/api/v1/sites"),
-    ("GET", "/api/v1/sites/{site_id}"),
-    ("GET", "/api/v1/alerts"),
-    ("GET", "/api/v1/recommendations"),
-    ("GET", "/api/v1/recommendations/{recommendation_id}"),
-    ("GET", "/api/v1/stats/summary"),
-    ("GET", "/api/v1/readings"),
-    ("GET", "/api/v1/sensors/status"),
-}
 
 
 @pytest.fixture(scope="module")

apps/backend/tests/api/test_predictions.py

@@ -0,0 +1,85 @@
+from collections.abc import Callable, Iterator
+from datetime import UTC, datetime
+from uuid import uuid4
+
+import pytest
+from fastapi import FastAPI
+from httpx import AsyncClient
+
+from app.api.deps import get_current_principal, get_prediction_service
+from app.core.principal import Principal
+from app.core.roles import AccountKind, Role
+from app.services.prediction import PredictionSummary, SitePrediction, SitePredictionSummary
+
+TARGET_AT = datetime(2026, 9, 16, 13, 0, tzinfo=UTC)
+CREATED_AT = datetime(2026, 9, 16, 12, 0, tzinfo=UTC)
+
+
+def lecteur() -> Principal:
+    # Le garde-fou de rôle (`lecteur` minimum) est déjà couvert par l'ensemble `ROUTES_A_ROLE`
+    # de `tests/api/test_openapi.py` : pas besoin ici d'un paramètre de rôle jamais appelé avec
+    # autre chose que sa valeur par défaut.
+    return Principal(
+        id=uuid4(),
+        email="lecteur@enervision.fr",
+        role=Role.LECTEUR,
+        kind=AccountKind.HUMAIN,
+        must_change_password=False,
+    )
+
+
+class FauxService:
+    def __init__(self) -> None:
+        self.resume = PredictionSummary(
+            timestamp=datetime.now(UTC),
+            sites=[
+                SitePredictionSummary(
+                    site_id="SITE001",
+                    site_name="Bureau Paris La Défense",
+                    prediction=SitePrediction(
+                        target_at=TARGET_AT,
+                        target_metric="consumption_kwh",
+                        period_minutes=60,
+                        predicted_value=812.5,
+                        status="available",
+                        failure_reason=None,
+                        model_reference="lightgbm-abc123",
+                        created_at=CREATED_AT,
+                    ),
+                ),
+                SitePredictionSummary(site_id="SITE002", site_name="Usine Lyon", prediction=None),
+            ],
+        )
+
+    async def summary(self) -> PredictionSummary:
+        return self.resume
+
+
+@pytest.fixture
+def servi(app: FastAPI) -> Iterator[Callable[[], FauxService]]:
+    def installe() -> FauxService:
+        service = FauxService()
+        app.dependency_overrides[get_prediction_service] = lambda: service
+        app.dependency_overrides[get_current_principal] = lambda: lecteur()
+        return service
+
+    yield installe
+    app.dependency_overrides.pop(get_prediction_service, None)
+    app.dependency_overrides.pop(get_current_principal, None)
+
+
+async def test_get_predictions_returns_the_service_result(
+    servi: Callable[[], FauxService], client: AsyncClient
+) -> None:
+    servi()
+
+    response = await client.get("/api/v1/predictions")
+
+    assert response.status_code == 200
+    corps = response.json()
+    premier, second = corps["sites"]
+    assert premier["site_id"] == "SITE001"
+    assert premier["prediction"]["predicted_value"] == 812.5
+    assert premier["prediction"]["status"] == "available"
+    assert second["site_id"] == "SITE002"
+    assert second["prediction"] is None

apps/backend/tests/api/test_route_protection.py

@@ -1,6 +1,6 @@
 # Ce test est le garde-fou de l'autorisation : rendre une route publique oblige à modifier
-# `ROUTES_PUBLIQUES` ci-dessous, ce qui apparaît en clair dans la diff d'une pull request et
+# `ROUTES_PUBLIQUES` dans `tests/api/acces.py`, ce qui apparaît en clair dans la diff d'une pull
-# demande une justification au relecteur.
+# request et demande une justification au relecteur.
 # Pourquoi : il interroge réellement chaque route sans jeton au lieu d'inspecter l'arbre de
 # dépendances. L'arbre n'est accessible que par l'API privée de FastAPI, et surtout une route
 # peut porter la bonne dépendance tout en répondant quand même.
@@ -11,58 +11,64 @@ import pytest
 from fastapi import FastAPI
 from httpx import AsyncClient
 
-ROUTES_PUBLIQUES = frozenset(
+from tests.api.acces import (
-    {
+    ROLE_MINIMUM,
-        ("GET", "/api/v1/health/live"),
+    ROUTE_COOKIE,
-        ("GET", "/api/v1/health/ready"),
+    ROUTES_PUBLIQUES,
-        ("POST", "/api/v1/auth/login"),
+    ROUTES_SANS_ROLE,
-        # Sans cookie, la déconnexion ne fait rien et répond 204 : elle est idempotente.
+    Route,
-        ("POST", "/api/v1/auth/logout"),
+    chemin_concret,
-        ("POST", "/api/v1/auth/forgot-password"),
+    routes_du_schema,
-        # Protégée par le jeton dans le corps de la requête, pas par un `Principal` : aucune
-        # authentification préalable ne s'applique, c'est la validité du jeton qui tranche.
-        ("POST", "/api/v1/auth/reset-password"),
-        # Même raison : lecture seule, protégée par le jeton passé en paramètre, pas par un
-        # `Principal`. Le jeton est un secret de 256 bits, non brute-forçable.
-        ("GET", "/api/v1/auth/reset-password/validate"),
-        ("GET", "/metrics"),
-    }
 )
 
-VALEURS_DE_SUBSTITUTION = "00000000-0000-0000-0000-000000000000"
 STATUTS_DE_REFUS = {401, 403}
+HORS_SCHEMA = {("GET", "/metrics")}
 
 
-def routes_declarees(app: FastAPI) -> list[tuple[str, str]]:
+def routes_declarees(app: FastAPI) -> list[Route]:
     schema: dict[str, Any] = app.openapi()
-    return [
+    return routes_du_schema(schema)
-        (methode.upper(), chemin)
-        for chemin, operations in schema["paths"].items()
-        for methode in operations
-        if methode.upper() in {"GET", "POST", "PATCH", "PUT", "DELETE"}
-    ]
 
 
-def routes_protegees(app: FastAPI) -> list[tuple[str, str]]:
+def routes_protegees(app: FastAPI) -> list[Route]:
     return [route for route in routes_declarees(app) if route not in ROUTES_PUBLIQUES]
 
 
 def test_the_public_allow_list_has_no_stale_entry(app: FastAPI) -> None:
-    declarees = set(routes_declarees(app)) | {("GET", "/metrics")}
+    declarees = set(routes_declarees(app)) | HORS_SCHEMA
 
     inconnues = ROUTES_PUBLIQUES - declarees
 
     assert inconnues == set()
 
 
+# Sans lui, une route ajoutée sans être classée n'est vue par aucun test de rôle : elle hérite
+# du seul contrôle anonyme, et une garde posée au mauvais niveau passe inaperçue.
+def test_every_declared_route_is_classified(app: FastAPI) -> None:
+    classees = ROUTES_PUBLIQUES | ROUTE_COOKIE | ROUTES_SANS_ROLE | set(ROLE_MINIMUM)
+
+    non_classees = set(routes_declarees(app)) - classees
+    fantomes = classees - set(routes_declarees(app)) - HORS_SCHEMA
+
+    assert non_classees == set(), "classer la route dans tests/api/acces.py"
+    assert fantomes == set(), "entrée morte : la route n'existe plus sous ce chemin"
+
+
+def test_the_four_classes_of_routes_stay_disjoint() -> None:
+    classes = [ROUTES_PUBLIQUES, ROUTE_COOKIE, ROUTES_SANS_ROLE, frozenset(ROLE_MINIMUM)]
+
+    for rang, classe in enumerate(classes):
+        for autre in classes[rang + 1 :]:
+            assert classe & autre == frozenset()
+
+
 async def test_every_route_rejects_an_anonymous_caller_unless_explicitly_public(
     app: FastAPI, client: AsyncClient
 ) -> None:
     ouvertes: list[tuple[str, str, int]] = []
 
     for methode, chemin in routes_protegees(app):
-        concret = chemin.replace("{user_id}", VALEURS_DE_SUBSTITUTION)
+        response = await client.request(methode, chemin_concret(chemin), json={})
-        response = await client.request(methode, concret, json={})
         if response.status_code not in STATUTS_DE_REFUS:
             ouvertes.append((methode, chemin, response.status_code))
 
@@ -81,3 +87,19 @@ async def test_the_declared_routes_are_actually_reachable(app: FastAPI) -> None:
 )
 def test_the_health_probes_stay_public(app: FastAPI, chemin: str) -> None:
     assert ("GET", chemin) in ROUTES_PUBLIQUES
+
+
+# Piège : ni les routes `include_in_schema=False` (/docs, /redoc) ni un `Mount` Starlette
+# (/static) n'apparaissent dans `app.openapi()["paths"]`. `routes_declarees()` ne les voit
+# donc jamais, et elles échapperaient silencieusement au garde-fou ci-dessus.
+@pytest.mark.parametrize(
+    "chemin",
+    ["/docs", "/redoc", "/static/logo-icon.png"],
+    ids=["swagger_ui", "redoc", "logo_statique"],
+)
+async def test_the_documentation_routes_are_public_by_design(
+    app: FastAPI, client: AsyncClient, chemin: str
+) -> None:
+    response = await client.get(chemin)
+
+    assert response.status_code == 200

apps/backend/tests/api/test_sites.py

@@ -1,4 +1,5 @@
 from collections.abc import Callable, Iterator
+from datetime import UTC, datetime
 from uuid import uuid4
 
 import pytest
@@ -9,7 +10,9 @@ from app.api.deps import get_current_principal, get_site_service
 from app.core.principal import Principal
 from app.core.roles import AccountKind, Role
 from app.models.energy import Site
-from app.services.site import SiteNotFoundError
+from app.services.site import SiteCurrentReading, SiteNotFoundError
+
+TIMESTAMP = datetime(2026, 9, 16, 12, 0, tzinfo=UTC)
 
 
 def principal(role: Role = Role.LECTEUR) -> Principal:
@@ -33,10 +36,28 @@ def site(site_id: str = "site-1") -> Site:
     )
 
 
+def lecture_actuelle(site_id: str = "site-1") -> SiteCurrentReading:
+    return SiteCurrentReading(
+        timestamp=TIMESTAMP,
+        site_id=site_id,
+        site_type="industriel",
+        consumption_kw=87.34,
+        consumption_kwh=87.34,
+        voltage_v=401.2,
+        current_a=132.5,
+        power_factor=0.923,
+        temperature_celsius=22.1,
+        humidity_percent=58.4,
+        null_reasons=[],
+        data_quality="good",
+    )
+
+
 class FauxService:
     def __init__(self, erreur: Exception | None = None) -> None:
         self._erreur = erreur
         self.site = site()
+        self.actuel = lecture_actuelle()
 
     async def list_all(self) -> list[Site]:
         return [self.site]
@@ -46,6 +67,11 @@ class FauxService:
             raise self._erreur
         return self.site
 
+    async def current(self, site_id: str) -> SiteCurrentReading:
+        if self._erreur is not None:
+            raise self._erreur
+        return self.actuel
+
 
 @pytest.fixture
 def lecteur_connecte(app: FastAPI) -> Iterator[None]:
@@ -109,6 +135,30 @@ async def test_get_site_returns_404_for_an_unknown_site(
     assert response.status_code == 404
 
 
+async def test_get_current_returns_the_latest_reading(
+    servi: Callable[..., FauxService], client: AsyncClient
+) -> None:
+    servi()
+
+    response = await client.get("/api/v1/sites/site-1/current")
+
+    assert response.status_code == 200
+    corps = response.json()
+    assert corps["site_id"] == "site-1"
+    assert corps["data_quality"] == "good"
+    assert corps["consumption_kw"] == 87.34
+
+
+async def test_get_current_returns_404_for_an_unknown_site(
+    servi: Callable[..., FauxService], client: AsyncClient
+) -> None:
+    servi(SiteNotFoundError("site-inconnu"))
+
+    response = await client.get("/api/v1/sites/site-inconnu/current")
+
+    assert response.status_code == 404
+
+
 async def test_list_sites_reaches_the_repository_through_the_session(
     lecteur_connecte: None, fake_session: Callable[..., None], client: AsyncClient
 ) -> None:

apps/backend/tests/etl/test_mock_api_import.py

@@ -0,0 +1,622 @@
+import json
+import sys
+from datetime import datetime
+from types import SimpleNamespace
+from typing import Any
+from unittest.mock import AsyncMock, MagicMock
+
+import httpx
+import pytest
+from httpx import AsyncClient, MockTransport, Request, Response
+from sqlalchemy import text
+from sqlalchemy.ext.asyncio import AsyncSession
+
+import app.etl.mock_api_import as mock_api_import
+from app.etl.mock_api_import import (
+    READING_INSERT,
+    SOURCE_HISTORY,
+    build_reading_batch,
+    build_reading_row,
+    fetch_readings,
+    fetch_sites,
+    upsert_sites,
+)
+
+
+def make_site() -> dict[str, Any]:
+    return {
+        "site_id": "SITE001",
+        "site_type": "office",
+        "site_name": "Bureau Paris La Défense",
+        "location": "Paris, France",
+        "capacity_kw": 200,
+        "status": "active",
+    }
+
+
+def make_reading() -> dict[str, Any]:
+    return {
+        "timestamp": "2024-06-15T12:00:00Z",
+        "site_id": "SITE001",
+        "site_type": "office",
+        "consumption_kw": 87.34,
+        "consumption_kwh": 87.34,
+        "voltage_v": 401.2,
+        "current_a": 132.5,
+        "power_factor": 0.923,
+        "temperature_celsius": 22.1,
+        "humidity_percent": 58.4,
+        "null_reasons": [],
+        "data_quality": "good",
+    }
+
+
+async def test_fetch_sites_returns_sites() -> None:
+    def handler(request: Request) -> Response:
+        assert request.url.path == "/api/v1/sites"
+
+        return Response(
+            status_code=200,
+            json=[make_site()],
+        )
+
+    transport = MockTransport(handler)
+
+    async with AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    ) as client:
+        sites = await fetch_sites(client)
+
+    assert len(sites) == 1
+    assert sites[0]["site_id"] == "SITE001"
+    assert sites[0]["site_type"] == "office"
+
+
+async def test_fetch_readings_sends_expected_query_parameters() -> None:
+    captured_params: dict[str, str] = {}
+
+    def handler(request: Request) -> Response:
+        nonlocal captured_params
+
+        captured_params = dict(request.url.params)
+
+        return Response(
+            status_code=200,
+            json=[make_reading()],
+        )
+
+    transport = MockTransport(handler)
+
+    start_time = datetime.fromisoformat("2024-06-15T12:00:00")
+    end_time = datetime.fromisoformat("2024-06-15T13:00:00")
+
+    async with AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    ) as client:
+        readings = await fetch_readings(
+            client=client,
+            site_id="SITE001",
+            start_time=start_time,
+            end_time=end_time,
+            limit=60,
+        )
+
+    assert len(readings) == 1
+    assert captured_params["site_id"] == "SITE001"
+    assert captured_params["start_time"] == "2024-06-15T12:00:00"
+    assert captured_params["end_time"] == "2024-06-15T13:00:00"
+    assert captured_params["limit"] == "60"
+
+
+async def test_fetch_readings_rejects_non_list_response() -> None:
+    def handler(request: Request) -> Response:
+        return Response(
+            status_code=200,
+            json={"unexpected": "payload"},
+        )
+
+    transport = MockTransport(handler)
+
+    async with AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    ) as client:
+        with pytest.raises(
+            ValueError,
+            match="La réponse /api/v1/readings doit être une liste",
+        ):
+            await fetch_readings(
+                client=client,
+                site_id="SITE001",
+                start_time=datetime.fromisoformat("2024-06-15T12:00:00"),
+                end_time=datetime.fromisoformat("2024-06-15T13:00:00"),
+                limit=60,
+            )
+
+
+async def test_fetch_readings_raises_on_http_error() -> None:
+    def handler(request: Request) -> Response:
+        return Response(
+            status_code=404,
+            json={"detail": "Site non trouvé"},
+        )
+
+    transport = MockTransport(handler)
+
+    async with AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    ) as client:
+        with pytest.raises(httpx.HTTPStatusError):
+            await fetch_readings(
+                client=client,
+                site_id="SITE999",
+                start_time=datetime.fromisoformat("2024-06-15T12:00:00"),
+                end_time=datetime.fromisoformat("2024-06-15T13:00:00"),
+                limit=60,
+            )
+
+
+def test_build_reading_row_respects_database_contract() -> None:
+    reading = make_reading()
+
+    row = build_reading_row(reading)
+
+    assert row["site_id"] == "SITE001"
+    assert row["source"] == SOURCE_HISTORY
+    assert row["source"] == "api_history"
+    assert row["dataset_id"] is None
+
+    assert row["timestamp"] == datetime.fromisoformat("2024-06-15T12:00:00+00:00")
+
+    assert row["consumption_kw"] == 87.34
+    assert row["consumption_kwh"] == 87.34
+    assert row["data_quality"] == "good"
+    assert row["null_reasons"] == []
+
+    assert row["imputed_values"] is None
+    assert row["imputation_method"] is None
+
+
+def test_build_reading_row_keeps_null_values_and_quality() -> None:
+    reading = make_reading()
+
+    reading["consumption_kw"] = None
+    reading["consumption_kwh"] = None
+    reading["voltage_v"] = None
+    reading["current_a"] = None
+    reading["power_factor"] = None
+    reading["data_quality"] = "degraded"
+    reading["null_reasons"] = [
+        "consumption_sensor_failure",
+        "electrical_sensor_failure",
+    ]
+
+    row = build_reading_row(reading)
+
+    assert row["consumption_kw"] is None
+    assert row["consumption_kwh"] is None
+    assert row["voltage_v"] is None
+    assert row["current_a"] is None
+    assert row["power_factor"] is None
+
+    assert row["data_quality"] == "degraded"
+    assert row["null_reasons"] == [
+        "consumption_sensor_failure",
+        "electrical_sensor_failure",
+    ]
+
+    assert row["imputed_values"] is None
+    assert row["imputation_method"] is None
+
+
+def test_build_reading_row_keeps_raw_source_data() -> None:
+    reading = make_reading()
+
+    row = build_reading_row(reading)
+
+    raw_data = json.loads(row["raw_data"])
+
+    assert raw_data == reading
+
+
+def test_build_reading_batch_transforms_all_readings() -> None:
+    first = make_reading()
+
+    second = make_reading()
+    second["timestamp"] = "2024-06-15T12:01:00Z"
+    second["consumption_kw"] = 90.5
+
+    rows = build_reading_batch([first, second])
+
+    assert len(rows) == 2
+
+    assert rows[0]["site_id"] == "SITE001"
+    assert rows[0]["consumption_kw"] == 87.34
+
+    assert rows[1]["site_id"] == "SITE001"
+    assert rows[1]["consumption_kw"] == 90.5
+
+
+def test_create_mock_api_client_requires_credentials(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    settings = SimpleNamespace(
+        mock_api_username=None,
+        mock_api_password=None,
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "get_settings",
+        lambda: settings,
+    )
+
+    with pytest.raises(
+        ValueError,
+        match="Les identifiants de l'API Mock ne sont pas configurés",
+    ):
+        mock_api_import.create_mock_api_client()
+
+
+async def test_create_mock_api_client_uses_configuration(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    password = MagicMock()
+    password.get_secret_value.return_value = "test-password"
+
+    settings = SimpleNamespace(
+        mock_api_base_url="https://mock.test/",
+        mock_api_username="test-user",
+        mock_api_password=password,
+        mock_api_timeout_seconds=10.0,
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "get_settings",
+        lambda: settings,
+    )
+
+    client = mock_api_import.create_mock_api_client()
+
+    try:
+        assert str(client.base_url) == "https://mock.test"
+        assert client.timeout.connect == 10.0
+    finally:
+        await client.aclose()
+
+
+async def test_upsert_sites_with_empty_list_does_nothing() -> None:
+    connection = AsyncMock()
+
+    await upsert_sites(
+        connection,
+        [],
+    )
+
+    connection.execute.assert_not_awaited()
+
+
+async def test_import_mock_api_history_dry_run_does_not_write(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    def handler(request: Request) -> Response:
+        if request.url.path == "/api/v1/sites":
+            return Response(
+                status_code=200,
+                json=[make_site()],
+            )
+
+        if request.url.path == "/api/v1/readings":
+            return Response(
+                status_code=200,
+                json=[make_reading()],
+            )
+
+        return Response(status_code=404)
+
+    transport = MockTransport(handler)
+
+    client = AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "create_mock_api_client",
+        lambda: client,
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "get_settings",
+        lambda: SimpleNamespace(
+            database_url="postgresql+asyncpg://unused",
+        ),
+    )
+
+    create_engine_mock = MagicMock()
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "create_async_engine",
+        create_engine_mock,
+    )
+
+    await mock_api_import.import_mock_api_history(
+        start_time=datetime.fromisoformat("2024-06-15T12:00:00"),
+        end_time=datetime.fromisoformat("2024-06-15T13:00:00"),
+        limit=60,
+        dry_run=True,
+    )
+
+    create_engine_mock.assert_not_called()
+
+
+async def test_import_mock_api_history_loads_data(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    def handler(request: Request) -> Response:
+        if request.url.path == "/api/v1/sites":
+            return Response(
+                status_code=200,
+                json=[make_site()],
+            )
+
+        if request.url.path == "/api/v1/readings":
+            return Response(
+                status_code=200,
+                json=[make_reading()],
+            )
+
+        return Response(status_code=404)
+
+    transport = MockTransport(handler)
+
+    client = AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "create_mock_api_client",
+        lambda: client,
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "get_settings",
+        lambda: SimpleNamespace(
+            database_url="postgresql+asyncpg://test:test@localhost/test",
+        ),
+    )
+
+    connection = AsyncMock()
+
+    transaction_context = MagicMock()
+    transaction_context.__aenter__ = AsyncMock(
+        return_value=connection,
+    )
+    transaction_context.__aexit__ = AsyncMock(
+        return_value=None,
+    )
+
+    engine = MagicMock()
+    engine.begin.return_value = transaction_context
+    engine.dispose = AsyncMock()
+
+    create_engine_mock = MagicMock(
+        return_value=engine,
+    )
+
+    upsert_sites_mock = AsyncMock()
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "create_async_engine",
+        create_engine_mock,
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "upsert_sites",
+        upsert_sites_mock,
+    )
+
+    await mock_api_import.import_mock_api_history(
+        start_time=datetime.fromisoformat("2024-06-15T12:00:00"),
+        end_time=datetime.fromisoformat("2024-06-15T13:00:00"),
+        limit=60,
+        dry_run=False,
+    )
+
+    create_engine_mock.assert_called_once_with(
+        "postgresql+asyncpg://test:test@localhost/test",
+        pool_pre_ping=True,
+    )
+
+    upsert_sites_mock.assert_awaited_once_with(
+        connection,
+        [make_site()],
+    )
+
+    connection.execute.assert_awaited_once()
+    engine.dispose.assert_awaited_once()
+
+
+def test_parse_datetime_accepts_z_suffix() -> None:
+    result = mock_api_import.parse_datetime(
+        "2024-06-15T12:00:00Z",
+    )
+
+    assert result == datetime.fromisoformat(
+        "2024-06-15T12:00:00+00:00",
+    )
+
+
+def test_parse_args_reads_cli_parameters(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setattr(
+        sys,
+        "argv",
+        [
+            "mock_api_import",
+            "--start-time",
+            "2024-06-15T12:00:00Z",
+            "--end-time",
+            "2024-06-15T13:00:00Z",
+            "--limit",
+            "60",
+            "--dry-run",
+        ],
+    )
+
+    args = mock_api_import.parse_args()
+
+    assert args.start_time == datetime.fromisoformat(
+        "2024-06-15T12:00:00+00:00",
+    )
+    assert args.end_time == datetime.fromisoformat(
+        "2024-06-15T13:00:00+00:00",
+    )
+    assert args.limit == 60
+    assert args.dry_run is True
+
+
+def test_main_rejects_limit_out_of_bounds(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setattr(
+        sys,
+        "argv",
+        [
+            "mock_api_import",
+            "--start-time",
+            "2024-06-15T12:00:00Z",
+            "--end-time",
+            "2024-06-15T13:00:00Z",
+            "--limit",
+            "0",
+        ],
+    )
+
+    with pytest.raises(
+        ValueError,
+        match="--limit doit être compris entre 1 et 1000",
+    ):
+        mock_api_import.main()
+
+
+def test_main_rejects_invalid_period(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setattr(
+        sys,
+        "argv",
+        [
+            "mock_api_import",
+            "--start-time",
+            "2024-06-15T14:00:00Z",
+            "--end-time",
+            "2024-06-15T13:00:00Z",
+            "--limit",
+            "60",
+        ],
+    )
+
+    with pytest.raises(
+        ValueError,
+        match="--start-time doit être antérieur à --end-time",
+    ):
+        mock_api_import.main()
+
+
+def test_main_runs_import(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    start_time = datetime.fromisoformat(
+        "2024-06-15T12:00:00+00:00",
+    )
+    end_time = datetime.fromisoformat(
+        "2024-06-15T13:00:00+00:00",
+    )
+
+    import_mock = AsyncMock()
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "parse_args",
+        lambda: SimpleNamespace(
+            start_time=start_time,
+            end_time=end_time,
+            limit=60,
+            dry_run=True,
+        ),
+    )
+
+    monkeypatch.setattr(
+        mock_api_import,
+        "import_mock_api_history",
+        import_mock,
+    )
+
+    mock_api_import.main()
+
+    import_mock.assert_awaited_once_with(
+        start_time=start_time,
+        end_time=end_time,
+        limit=60,
+        dry_run=True,
+    )
+
+
+@pytest.mark.integration
+async def test_reading_insert_is_idempotent(
+    session: AsyncSession,
+) -> None:
+    reading = make_reading()
+    row = build_reading_row(reading)
+
+    connection = await session.connection()
+
+    await upsert_sites(
+        connection,
+        [make_site()],
+    )
+
+    await session.execute(
+        READING_INSERT,
+        [row],
+    )
+
+    await session.execute(
+        READING_INSERT,
+        [row],
+    )
+
+    result = await session.execute(
+        text(
+            """
+            SELECT COUNT(*)
+            FROM reading
+            WHERE site_id = :site_id
+              AND timestamp = :timestamp
+              AND source = :source
+            """
+        ),
+        {
+            "site_id": row["site_id"],
+            "timestamp": row["timestamp"],
+            "source": row["source"],
+        },
+    )
+
+    assert result.scalar_one() == 1
+
+    await session.rollback()

apps/backend/tests/repositories/test_alert.py

@@ -89,3 +89,60 @@ async def test_list_all_returns_an_empty_list_when_there_is_nothing(
     alertes = await depot.list_all(site_id=identifiant_site())
 
     assert list(alertes) == []
+
+
+def _alerte_a_inserer(*, site_id: str, source_alert_id: str) -> Alert:
+    return Alert(
+        source_alert_id=source_alert_id,
+        site_id=site_id,
+        source="enervision",
+        timestamp=datetime(2026, 9, 16, tzinfo=UTC),
+        type="threshold",
+        severity="high",
+        message="Dépassement du seuil configuré",
+        value=812.5,
+        threshold=720.0,
+        metric="consumption_kw",
+        prediction_id=None,
+        raw_data={},
+    )
+
+
+async def test_create_many_inserts_every_alert(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = AlertRepository(session)
+
+    creees = await depot.create_many(
+        [
+            _alerte_a_inserer(site_id=site.site_id, source_alert_id="threshold:a"),
+            _alerte_a_inserer(site_id=site.site_id, source_alert_id="threshold:b"),
+        ]
+    )
+    identifiants = [a.alert_id for a in creees]
+    await session.rollback()
+
+    assert len(identifiants) == 2
+    assert all(identifiant is not None for identifiant in identifiants)
+
+
+async def test_create_many_skips_a_duplicate_source_alert_id(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = AlertRepository(session)
+    await depot.create_many(
+        [_alerte_a_inserer(site_id=site.site_id, source_alert_id="threshold:rejouee")]
+    )
+
+    rejouees = await depot.create_many(
+        [_alerte_a_inserer(site_id=site.site_id, source_alert_id="threshold:rejouee")]
+    )
+    await session.rollback()
+
+    assert rejouees == []
+
+
+async def test_create_many_does_nothing_for_an_empty_list(session: AsyncSession) -> None:
+    depot = AlertRepository(session)
+
+    creees = await depot.create_many([])
+
+    assert creees == []

apps/backend/tests/repositories/test_prediction.py

@@ -0,0 +1,171 @@
+from datetime import UTC, datetime
+
+import pytest
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.energy import Prediction
+from app.repositories.prediction import PredictionRepository
+from tests.repositories.test_site import creer as creer_site
+from tests.repositories.test_site import identifiant as identifiant_site
+
+pytestmark = pytest.mark.integration
+
+
+async def creer_prediction(
+    session: AsyncSession, *, site_id: str, **overrides: object
+) -> Prediction:
+    prediction = Prediction(
+        site_id=site_id,
+        target_at=overrides.get("target_at", datetime(2026, 9, 16, tzinfo=UTC)),
+        target_metric=overrides.get("target_metric", "consumption_kwh"),
+        period_minutes=overrides.get("period_minutes", 60),
+        predicted_value=overrides.get("predicted_value", 42.0),
+        model_reference=overrides.get("model_reference", "lightgbm-test"),
+        status=overrides.get("status", "available"),
+        failure_reason=overrides.get("failure_reason"),
+    )
+    session.add(prediction)
+    await session.flush()
+    return prediction
+
+
+async def test_list_since_excludes_predictions_before_the_cutoff(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = PredictionRepository(session)
+    dedans = await creer_prediction(
+        session, site_id=site.site_id, target_at=datetime(2026, 9, 16, tzinfo=UTC)
+    )
+    await creer_prediction(
+        session, site_id=site.site_id, target_at=datetime(2026, 9, 1, tzinfo=UTC)
+    )
+
+    resultats = await depot.list_since(
+        since=datetime(2026, 9, 10, tzinfo=UTC), site_id=site.site_id
+    )
+    identifiants = [p.prediction_id for p in resultats]
+    await session.rollback()
+
+    assert identifiants == [dedans.prediction_id]
+
+
+async def test_list_since_excludes_predictions_that_are_not_available(
+    session: AsyncSession,
+) -> None:
+    site = await creer_site(session)
+    depot = PredictionRepository(session)
+    await creer_prediction(
+        session,
+        site_id=site.site_id,
+        target_at=datetime(2026, 9, 16, tzinfo=UTC),
+        status="insufficient_data",
+        predicted_value=None,
+        failure_reason="pas assez d'historique",
+    )
+
+    resultats = await depot.list_since(since=datetime(2026, 9, 1, tzinfo=UTC), site_id=site.site_id)
+    await session.rollback()
+
+    assert list(resultats) == []
+
+
+async def test_list_since_breaks_a_target_at_tie_by_ascending_prediction_id(
+    session: AsyncSession,
+) -> None:
+    # `prediction` n'a pas d'unicité sur `(site_id, target_at)` : deux runs de scoring sans
+    # nouvelle lecture entre-temps produisent deux lignes `available` à la même cible. Sans ce
+    # départage, `_detect_anomaly` retiendrait une ligne au hasard plutôt que le run le plus
+    # récent.
+    site = await creer_site(session)
+    depot = PredictionRepository(session)
+    cible = datetime(2026, 9, 16, tzinfo=UTC)
+    premier_run = await creer_prediction(
+        session, site_id=site.site_id, target_at=cible, predicted_value=10.0
+    )
+    second_run = await creer_prediction(
+        session, site_id=site.site_id, target_at=cible, predicted_value=20.0
+    )
+
+    resultats = await depot.list_since(since=datetime(2026, 9, 1, tzinfo=UTC), site_id=site.site_id)
+    identifiants = [p.prediction_id for p in resultats]
+    await session.rollback()
+
+    assert identifiants == [premier_run.prediction_id, second_run.prediction_id]
+
+
+async def test_list_since_filters_by_site_id(session: AsyncSession) -> None:
+    premier = await creer_site(session)
+    second = await creer_site(session)
+    depot = PredictionRepository(session)
+    voulue = await creer_prediction(session, site_id=premier.site_id)
+    await creer_prediction(session, site_id=second.site_id)
+
+    resultats = await depot.list_since(
+        since=datetime(2026, 8, 1, tzinfo=UTC), site_id=premier.site_id
+    )
+    identifiants = [p.prediction_id for p in resultats]
+    await session.rollback()
+
+    assert identifiants == [voulue.prediction_id]
+
+
+async def test_latest_by_site_keeps_only_the_most_recent_target(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = PredictionRepository(session)
+    ancienne = await creer_prediction(
+        session, site_id=site.site_id, target_at=datetime(2026, 9, 1, tzinfo=UTC)
+    )
+    recente = await creer_prediction(
+        session, site_id=site.site_id, target_at=datetime(2026, 9, 15, tzinfo=UTC)
+    )
+
+    resultats = await depot.latest_by_site()
+    identifiants = [
+        p.prediction_id
+        for p in resultats
+        if p.prediction_id in (ancienne.prediction_id, recente.prediction_id)
+    ]
+    await session.rollback()
+
+    assert identifiants == [recente.prediction_id]
+
+
+async def test_latest_by_site_returns_one_row_per_site(session: AsyncSession) -> None:
+    premier = await creer_site(session)
+    second = await creer_site(session)
+    depot = PredictionRepository(session)
+    voulue_premier = await creer_prediction(session, site_id=premier.site_id)
+    voulue_second = await creer_prediction(session, site_id=second.site_id)
+
+    resultats = await depot.latest_by_site()
+    identifiants = {p.site_id for p in resultats if p.site_id in (premier.site_id, second.site_id)}
+    await session.rollback()
+
+    assert identifiants == {voulue_premier.site_id, voulue_second.site_id}
+
+
+async def test_latest_by_site_keeps_an_insufficient_data_prediction(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = PredictionRepository(session)
+    voulue = await creer_prediction(
+        session,
+        site_id=site.site_id,
+        status="insufficient_data",
+        predicted_value=None,
+        failure_reason="pas assez d'historique",
+    )
+
+    resultats = await depot.latest_by_site()
+    identifiants = [p.prediction_id for p in resultats if p.site_id == site.site_id]
+    await session.rollback()
+
+    assert identifiants == [voulue.prediction_id]
+
+
+async def test_latest_by_site_returns_an_empty_list_when_there_is_nothing(
+    session: AsyncSession,
+) -> None:
+    depot = PredictionRepository(session)
+
+    resultats = [p for p in await depot.latest_by_site() if p.site_id == identifiant_site()]
+
+    assert resultats == []

apps/backend/tests/repositories/test_reading.py

@@ -88,6 +88,146 @@ async def test_latest_by_site_returns_one_row_per_site(session: AsyncSession) ->
     assert identifiants == {premier, second}
 
 
+async def test_latest_by_site_breaks_a_timestamp_tie_on_the_last_written_reading(
+    session: AsyncSession,
+) -> None:
+    site = await creer_site(session)
+    depot = ReadingRepository(session)
+    horodatage = datetime(2026, 9, 15, tzinfo=UTC)
+    await creer_lecture(
+        session, site_id=site.site_id, timestamp=horodatage, source="api_history", consumption_kw=10
+    )
+    derniere = await creer_lecture(
+        session, site_id=site.site_id, timestamp=horodatage, source="api_current", consumption_kw=42
+    )
+
+    resultats = await depot.latest_by_site()
+    retenues = [r.reading_id for r in resultats if r.site_id == site.site_id]
+    await session.rollback()
+
+    assert retenues == [derniere.reading_id]
+
+
+async def test_latest_for_site_returns_the_most_recent_reading(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = ReadingRepository(session)
+    await creer_lecture(session, site_id=site.site_id, timestamp=datetime(2026, 9, 1, tzinfo=UTC))
+    recente = await creer_lecture(
+        session, site_id=site.site_id, timestamp=datetime(2026, 9, 15, tzinfo=UTC)
+    )
+
+    trouvee = await depot.latest_for_site(site.site_id)
+    reading_id = trouvee.reading_id if trouvee else None
+    await session.rollback()
+
+    assert reading_id == recente.reading_id
+
+
+async def test_latest_for_site_breaks_a_timestamp_tie_on_the_last_written_reading(
+    session: AsyncSession,
+) -> None:
+    site = await creer_site(session)
+    depot = ReadingRepository(session)
+    horodatage = datetime(2026, 9, 15, tzinfo=UTC)
+    await creer_lecture(session, site_id=site.site_id, timestamp=horodatage, source="api_history")
+    derniere = await creer_lecture(
+        session, site_id=site.site_id, timestamp=horodatage, source="api_current"
+    )
+
+    trouvee = await depot.latest_for_site(site.site_id)
+    reading_id = trouvee.reading_id if trouvee else None
+    await session.rollback()
+
+    assert reading_id == derniere.reading_id
+
+
+async def test_latest_for_site_ignores_the_readings_of_the_other_sites(
+    session: AsyncSession,
+) -> None:
+    sans_lecture = await creer_site(session)
+    autre = await creer_site(session)
+    depot = ReadingRepository(session)
+    await creer_lecture(session, site_id=autre.site_id)
+
+    trouvee = await depot.latest_for_site(sans_lecture.site_id)
+    await session.rollback()
+
+    assert trouvee is None
+
+
+async def test_list_since_orders_by_site_then_by_time_ascending(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = ReadingRepository(session)
+    plus_recente = await creer_lecture(
+        session, site_id=site.site_id, timestamp=datetime(2026, 9, 16, tzinfo=UTC)
+    )
+    plus_ancienne = await creer_lecture(
+        session, site_id=site.site_id, timestamp=datetime(2026, 9, 15, tzinfo=UTC)
+    )
+
+    resultats = await depot.list_since(since=datetime(2026, 9, 1, tzinfo=UTC), site_id=site.site_id)
+    identifiants = [r.reading_id for r in resultats]
+    await session.rollback()
+
+    assert identifiants == [plus_ancienne.reading_id, plus_recente.reading_id]
+
+
+async def test_list_since_excludes_readings_before_the_cutoff(session: AsyncSession) -> None:
+    site = await creer_site(session)
+    depot = ReadingRepository(session)
+    dedans = await creer_lecture(
+        session, site_id=site.site_id, timestamp=datetime(2026, 9, 16, tzinfo=UTC)
+    )
+    await creer_lecture(session, site_id=site.site_id, timestamp=datetime(2026, 9, 1, tzinfo=UTC))
+
+    resultats = await depot.list_since(
+        since=datetime(2026, 9, 10, tzinfo=UTC), site_id=site.site_id
+    )
+    identifiants = [r.reading_id for r in resultats]
+    await session.rollback()
+
+    assert identifiants == [dedans.reading_id]
+
+
+async def test_list_since_breaks_a_timestamp_tie_by_ascending_reading_id(
+    session: AsyncSession,
+) -> None:
+    # `uq_reading_source` autorise deux lignes au même `site_id`+`timestamp` quand la `source`
+    # diffère (même piège que `latest_for_site`). Sans ce départage, `_detect_spike` traiterait
+    # cette paire comme une variation réelle selon un ordre non garanti par le plan d'exécution.
+    site = await creer_site(session)
+    depot = ReadingRepository(session)
+    horodatage = datetime(2026, 9, 16, tzinfo=UTC)
+    premiere = await creer_lecture(
+        session, site_id=site.site_id, timestamp=horodatage, source="api_history", consumption_kw=10
+    )
+    seconde = await creer_lecture(
+        session, site_id=site.site_id, timestamp=horodatage, source="api_current", consumption_kw=42
+    )
+
+    resultats = await depot.list_since(since=datetime(2026, 9, 1, tzinfo=UTC), site_id=site.site_id)
+    identifiants = [r.reading_id for r in resultats]
+    await session.rollback()
+
+    assert identifiants == [premiere.reading_id, seconde.reading_id]
+
+
+async def test_list_since_filters_by_site_id(session: AsyncSession) -> None:
+    premier = await creer_site(session)
+    second = await creer_site(session)
+    depot = ReadingRepository(session)
+    voulue = await creer_lecture(session, site_id=premier.site_id)
+    await creer_lecture(session, site_id=second.site_id)
+
+    resultats = await depot.list_since(
+        since=datetime(2026, 8, 1, tzinfo=UTC), site_id=premier.site_id
+    )
+    identifiants = [r.reading_id for r in resultats]
+    await session.rollback()
+
+    assert identifiants == [voulue.reading_id]
+
+
 async def test_list_history_orders_the_readings_by_timestamp_descending(
     session: AsyncSession,
 ) -> None:

apps/backend/tests/services/test_alert.py

@@ -1,7 +1,10 @@
-from datetime import UTC, datetime
+from dataclasses import dataclass, field
+from datetime import UTC, datetime, timedelta
 
 from app.models.energy import Alert
-from app.services.alert import AlertService
+from app.services.alert import OUTAGE_THRESHOLD, AlertService, _severity_from_ratio
+
+NOW = datetime(2026, 9, 16, 12, 0, tzinfo=UTC)
 
 
 def alert(
@@ -26,10 +29,36 @@ def alert(
     )
 
 
+@dataclass
+class FauxSite:
+    site_id: str
+    capacity_kw: float | None = None
+
+
+@dataclass
+class FauxLecture:
+    site_id: str
+    timestamp: datetime
+    consumption_kw: float | None = None
+    consumption_kwh: float | None = None
+    data_quality: str | None = None
+    null_reasons: list[str] | None = None
+
+
+@dataclass
+class FauxPrediction:
+    site_id: str
+    target_at: datetime
+    predicted_value: float | None
+    target_metric: str = "consumption_kwh"
+    prediction_id: int = 1
+
+
 class FakeRepository:
     def __init__(self, alerts: list[Alert]) -> None:
         self._alerts = alerts
         self.appels: list[tuple[str | None, str | None]] = []
+        self.crees: list[Alert] = []
 
     async def list_all(
         self, *, site_id: str | None = None, severity: str | None = None
@@ -37,19 +66,392 @@ class FakeRepository:
         self.appels.append((site_id, severity))
         return self._alerts
 
+    async def create_many(self, alerts: list[Alert]) -> list[Alert]:
+        self.crees = list(alerts)
+        return self.crees
+
+
+@dataclass
+class FauxDepotLectures:
+    depuis: list[FauxLecture] = field(default_factory=list)
+    dernieres: list[FauxLecture] = field(default_factory=list)
+
+    async def list_since(self, *, since: datetime, site_id: str | None = None) -> list[FauxLecture]:
+        return [lecture for lecture in self.depuis if site_id is None or lecture.site_id == site_id]
+
+    async def latest_by_site(self) -> list[FauxLecture]:
+        return self.dernieres
+
+
+@dataclass
+class FauxDepotPredictions:
+    predictions: list[FauxPrediction] = field(default_factory=list)
+
+    async def list_since(
+        self, *, since: datetime, site_id: str | None = None
+    ) -> list[FauxPrediction]:
+        return [p for p in self.predictions if site_id is None or p.site_id == site_id]
+
+
+@dataclass
+class FauxDepotSites:
+    sites: list[FauxSite]
+
+    async def list_all(self) -> list[FauxSite]:
+        return self.sites
+
+
+def service(
+    *,
+    sites: list[FauxSite],
+    lectures: list[FauxLecture] | None = None,
+    dernieres: list[FauxLecture] | None = None,
+    predictions: list[FauxPrediction] | None = None,
+    alerts: FakeRepository | None = None,
+) -> tuple[AlertService, FakeRepository]:
+    depot_alertes = alerts or FakeRepository([])
+    dernieres_lectures = dernieres if dernieres is not None else (lectures or [])
+    return (
+        AlertService(
+            alerts=depot_alertes,  # type: ignore[arg-type]
+            readings=FauxDepotLectures(depuis=lectures or [], dernieres=dernieres_lectures),  # type: ignore[arg-type]
+            predictions=FauxDepotPredictions(predictions or []),  # type: ignore[arg-type]
+            sites=FauxDepotSites(sites),  # type: ignore[arg-type]
+        ),
+        depot_alertes,
+    )
+
 
 async def test_list_all_returns_the_repository_alerts() -> None:
-    service = AlertService(alerts=FakeRepository([alert(1), alert(2)]))
+    svc, _ = service(sites=[], alerts=FakeRepository([alert(1), alert(2)]))
 
-    alertes = await service.list_all()
+    alertes = await svc.list_all()
 
     assert [a.alert_id for a in alertes] == [1, 2]
 
 
 async def test_list_all_relays_the_filters_to_the_repository() -> None:
     depot = FakeRepository([])
-    service = AlertService(alerts=depot)
+    svc, _ = service(sites=[], alerts=depot)
 
-    await service.list_all(site_id="site-1", severity="critical")
+    await svc.list_all(site_id="site-1", severity="critical")
 
     assert depot.appels == [("site-1", "critical")]
+
+
+async def test_detect_raises_a_threshold_alert_above_site_capacity() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A", capacity_kw=100.0)],
+        lectures=[FauxLecture("A", NOW, consumption_kw=150.0)],
+    )
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = depot.crees
+    assert candidate.type == "threshold"
+    assert candidate.severity == "high"
+    assert candidate.value == 150.0
+    assert candidate.threshold == 100.0
+    assert candidate.metric == "consumption_kw"
+
+
+async def test_detect_ignores_a_reading_within_capacity() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A", capacity_kw=100.0)],
+        lectures=[FauxLecture("A", NOW, consumption_kw=80.0)],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert depot.crees == []
+
+
+async def test_detect_ignores_threshold_when_the_site_has_no_declared_capacity() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A", capacity_kw=None)],
+        lectures=[FauxLecture("A", NOW, consumption_kw=9999.0)],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert depot.crees == []
+
+
+async def test_detect_raises_a_spike_alert_on_a_brutal_consecutive_variation() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[
+            FauxLecture("A", NOW - timedelta(hours=1), consumption_kw=100.0),
+            FauxLecture("A", NOW, consumption_kw=160.0),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = [a for a in depot.crees if a.type == "spike"]
+    assert candidate.value == 160.0
+    assert candidate.threshold == 100.0
+    assert candidate.timestamp == NOW
+
+
+async def test_detect_ignores_a_moderate_consecutive_variation() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[
+            FauxLecture("A", NOW - timedelta(hours=1), consumption_kw=100.0),
+            FauxLecture("A", NOW, consumption_kw=110.0),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "spike"] == []
+
+
+async def test_detect_never_compares_consecutive_readings_across_two_sites() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A"), FauxSite("B")],
+        lectures=[
+            FauxLecture("A", NOW - timedelta(hours=1), consumption_kw=10.0),
+            FauxLecture("B", NOW, consumption_kw=1000.0),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "spike"] == []
+
+
+async def test_detect_raises_an_anomaly_alert_far_from_the_matching_prediction() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[FauxLecture("A", NOW, consumption_kwh=100.0)],
+        predictions=[FauxPrediction("A", target_at=NOW, predicted_value=70.0)],
+    )
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = [a for a in depot.crees if a.type == "anomaly"]
+    assert candidate.value == 100.0
+    assert candidate.threshold == 70.0
+    assert candidate.metric == "consumption_kwh"
+    assert candidate.prediction_id == 1
+
+
+async def test_detect_ignores_a_reading_close_to_its_prediction() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[FauxLecture("A", NOW, consumption_kwh=100.0)],
+        predictions=[FauxPrediction("A", target_at=NOW, predicted_value=95.0)],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "anomaly"] == []
+
+
+async def test_detect_ignores_a_prediction_whose_target_at_does_not_match_the_reading() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[FauxLecture("A", NOW, consumption_kwh=100.0)],
+        predictions=[FauxPrediction("A", target_at=NOW - timedelta(hours=1), predicted_value=1.0)],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "anomaly"] == []
+
+
+async def test_detect_keeps_the_most_recent_run_when_two_predictions_share_the_same_target() -> (
+    None
+):
+    # `PredictionRepository.list_since` départage les égalités de `target_at` par `prediction_id`
+    # croissant : le repository fait donc déjà passer le run le plus récent en dernier dans la
+    # liste, et c'est ce dernier que le dict de `_detect_anomaly` doit retenir.
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[FauxLecture("A", NOW, consumption_kwh=100.0)],
+        predictions=[
+            FauxPrediction("A", target_at=NOW, predicted_value=100.0, prediction_id=1),
+            FauxPrediction("A", target_at=NOW, predicted_value=70.0, prediction_id=2),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = [a for a in depot.crees if a.type == "anomaly"]
+    assert candidate.threshold == 70.0
+    assert candidate.prediction_id == 2
+
+
+async def test_detect_raises_an_outage_alert_past_the_threshold() -> None:
+    derniere = NOW - OUTAGE_THRESHOLD - timedelta(minutes=1)
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[],
+        dernieres=[FauxLecture("A", derniere)],
+    )
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = [a for a in depot.crees if a.type == "outage"]
+    assert candidate.severity in {"low", "medium", "high", "critical"}
+
+
+async def test_detect_ignores_a_site_still_within_the_outage_threshold() -> None:
+    derniere = NOW - OUTAGE_THRESHOLD + timedelta(minutes=1)
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[],
+        dernieres=[FauxLecture("A", derniere)],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "outage"] == []
+
+
+async def test_detect_raises_a_critical_outage_alert_for_a_site_never_read() -> None:
+    svc, depot = service(sites=[FauxSite("A")], lectures=[], dernieres=[])
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = [a for a in depot.crees if a.type == "outage"]
+    assert candidate.severity == "critical"
+    assert candidate.source_alert_id == "outage:jamais"
+
+
+async def test_detect_raises_a_sensor_alert_on_a_degraded_reading() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[FauxLecture("A", NOW, data_quality="critical", null_reasons=["missing:x"])],
+    )
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = [a for a in depot.crees if a.type == "sensor"]
+    assert candidate.severity == "critical"
+
+
+async def test_detect_ignores_a_good_quality_reading_for_the_sensor_rule() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[FauxLecture("A", NOW, data_quality="good")],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "sensor"] == []
+
+
+async def test_detect_scopes_to_a_single_site_when_asked() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A", capacity_kw=100.0), FauxSite("B", capacity_kw=100.0)],
+        lectures=[
+            FauxLecture("A", NOW, consumption_kw=150.0),
+            FauxLecture("B", NOW, consumption_kw=150.0),
+        ],
+    )
+
+    await svc.detect(now=NOW, site_id="A")
+
+    assert {a.site_id for a in depot.crees} == {"A"}
+
+
+async def test_detect_returns_early_when_there_is_no_site() -> None:
+    svc, depot = service(sites=[])
+
+    resultat = await svc.detect(now=NOW)
+
+    assert resultat == []
+    assert depot.crees == []
+
+
+async def test_detect_ignores_a_spike_pair_with_a_missing_measurement() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[
+            FauxLecture("A", NOW - timedelta(hours=1), consumption_kw=None),
+            FauxLecture("A", NOW, consumption_kw=160.0),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "spike"] == []
+
+
+async def test_detect_ignores_a_reading_still_at_zero_after_a_previous_zero() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[
+            FauxLecture("A", NOW - timedelta(hours=1), consumption_kw=0.0),
+            FauxLecture("A", NOW, consumption_kw=0.0),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "spike"] == []
+
+
+async def test_detect_raises_a_critical_spike_when_a_site_restarts_from_zero() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[
+            FauxLecture("A", NOW - timedelta(hours=1), consumption_kw=0.0),
+            FauxLecture("A", NOW, consumption_kw=50.0),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    (candidate,) = [a for a in depot.crees if a.type == "spike"]
+    assert candidate.severity == "critical"
+    assert candidate.value == 50.0
+    assert candidate.threshold == 0.0
+
+
+async def test_detect_ignores_a_spike_pair_sharing_the_same_timestamp() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[
+            FauxLecture("A", NOW, consumption_kw=100.0),
+            FauxLecture("A", NOW, consumption_kw=160.0),
+        ],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "spike"] == []
+
+
+async def test_detect_ignores_an_anomaly_when_the_prediction_is_near_zero() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A")],
+        lectures=[FauxLecture("A", NOW, consumption_kwh=5.0)],
+        predictions=[FauxPrediction("A", target_at=NOW, predicted_value=0.0)],
+    )
+
+    await svc.detect(now=NOW)
+
+    assert [a for a in depot.crees if a.type == "anomaly"] == []
+
+
+def test_severity_from_ratio_covers_every_band() -> None:
+    assert _severity_from_ratio(1.0) == "low"
+    assert _severity_from_ratio(1.2) == "medium"
+    assert _severity_from_ratio(1.5) == "high"
+    assert _severity_from_ratio(2.0) == "critical"
+
+
+async def test_detect_does_not_call_create_many_when_nothing_triggers() -> None:
+    svc, depot = service(
+        sites=[FauxSite("A", capacity_kw=100.0)],
+        lectures=[FauxLecture("A", NOW, consumption_kw=10.0, data_quality="good")],
+    )
+
+    resultat = await svc.detect(now=NOW)
+
+    assert resultat == []
+    assert depot.crees == []

apps/backend/tests/services/test_prediction.py

@@ -0,0 +1,121 @@
+from dataclasses import dataclass
+from datetime import UTC, datetime
+
+from app.services.prediction import PredictionService
+
+TARGET_AT = datetime(2026, 9, 16, 13, 0, tzinfo=UTC)
+CREATED_AT = datetime(2026, 9, 16, 12, 0, tzinfo=UTC)
+
+
+@dataclass
+class FauxSite:
+    site_id: str
+    site_name: str
+
+
+@dataclass
+class FauxPrediction:
+    site_id: str
+    target_at: datetime
+    target_metric: str
+    period_minutes: int | None
+    predicted_value: float | None
+    status: str
+    failure_reason: str | None
+    model_reference: str
+    created_at: datetime
+
+
+class FauxDepotSites:
+    def __init__(self, sites: list[FauxSite]) -> None:
+        self._sites = sites
+
+    async def list_all(self) -> list[FauxSite]:
+        return self._sites
+
+
+class FauxDepotPredictions:
+    def __init__(self, predictions: list[FauxPrediction]) -> None:
+        self._predictions = predictions
+
+    async def latest_by_site(self) -> list[FauxPrediction]:
+        return self._predictions
+
+
+def prediction_disponible(site_id: str = "A") -> FauxPrediction:
+    return FauxPrediction(
+        site_id=site_id,
+        target_at=TARGET_AT,
+        target_metric="consumption_kwh",
+        period_minutes=60,
+        predicted_value=812.5,
+        status="available",
+        failure_reason=None,
+        model_reference="lightgbm-abc123",
+        created_at=CREATED_AT,
+    )
+
+
+async def test_summary_attaches_the_latest_prediction_to_its_site() -> None:
+    service = PredictionService(
+        sites=FauxDepotSites([FauxSite("A", "Site A")]),  # type: ignore[arg-type]
+        predictions=FauxDepotPredictions([prediction_disponible("A")]),  # type: ignore[arg-type]
+    )
+
+    resume = await service.summary()
+
+    site = resume.sites[0]
+    assert site.site_id == "A"
+    assert site.prediction is not None
+    assert site.prediction.predicted_value == 812.5
+    assert site.prediction.status == "available"
+
+
+async def test_summary_leaves_prediction_none_for_a_site_never_scored() -> None:
+    service = PredictionService(
+        sites=FauxDepotSites([FauxSite("A", "Site A")]),  # type: ignore[arg-type]
+        predictions=FauxDepotPredictions([]),  # type: ignore[arg-type]
+    )
+
+    resume = await service.summary()
+
+    assert resume.sites[0].prediction is None
+
+
+async def test_summary_carries_an_insufficient_data_prediction_without_a_value() -> None:
+    insuffisante = FauxPrediction(
+        site_id="A",
+        target_at=TARGET_AT,
+        target_metric="consumption_kwh",
+        period_minutes=60,
+        predicted_value=None,
+        status="insufficient_data",
+        failure_reason="pas assez d'historique",
+        model_reference="lightgbm-abc123",
+        created_at=CREATED_AT,
+    )
+    service = PredictionService(
+        sites=FauxDepotSites([FauxSite("A", "Site A")]),  # type: ignore[arg-type]
+        predictions=FauxDepotPredictions([insuffisante]),  # type: ignore[arg-type]
+    )
+
+    resume = await service.summary()
+
+    site = resume.sites[0]
+    assert site.prediction is not None
+    assert site.prediction.status == "insufficient_data"
+    assert site.prediction.predicted_value is None
+    assert site.prediction.failure_reason == "pas assez d'historique"
+
+
+async def test_summary_covers_every_site_even_with_a_single_prediction_in_the_repository() -> None:
+    service = PredictionService(
+        sites=FauxDepotSites([FauxSite("A", "Site A"), FauxSite("B", "Site B")]),  # type: ignore[arg-type]
+        predictions=FauxDepotPredictions([prediction_disponible("A")]),  # type: ignore[arg-type]
+    )
+
+    resume = await service.summary()
+
+    par_site = {site.site_id: site for site in resume.sites}
+    assert par_site["A"].prediction is not None
+    assert par_site["B"].prediction is None

apps/backend/tests/services/test_site.py

@@ -1,8 +1,13 @@
+from dataclasses import dataclass, field
+from datetime import UTC, datetime
+
 import pytest
 
 from app.models.energy import Site
 from app.services.site import SiteNotFoundError, SiteService
 
+TIMESTAMP = datetime(2026, 9, 16, 12, 0, tzinfo=UTC)
+
 
 def site(site_id: str = "site-1") -> Site:
     return Site(
@@ -15,6 +20,21 @@ def site(site_id: str = "site-1") -> Site:
     )
 
 
+@dataclass
+class FauxLecture:
+    site_id: str
+    timestamp: datetime = TIMESTAMP
+    consumption_kw: float | None = 87.34
+    consumption_kwh: float | None = 87.34
+    voltage_v: float | None = 401.2
+    current_a: float | None = 132.5
+    power_factor: float | None = 0.923
+    temperature_celsius: float | None = 22.1
+    humidity_percent: float | None = 58.4
+    null_reasons: list[str] | None = field(default_factory=list)
+    data_quality: str | None = "good"
+
+
 class FakeRepository:
     def __init__(self, sites: list[Site]) -> None:
         self._sites = sites
@@ -26,24 +46,77 @@ class FakeRepository:
         return next((s for s in self._sites if s.site_id == site_id), None)
 
 
-async def test_list_all_returns_the_repository_sites() -> None:
+class FauxDepotLectures:
-    service = SiteService(sites=FakeRepository([site("a"), site("b")]))
+    def __init__(self, lectures: dict[str, FauxLecture]) -> None:
+        self._lectures = lectures
 
-    sites = await service.list_all()
+    async def latest_for_site(self, site_id: str) -> FauxLecture | None:
+        return self._lectures.get(site_id)
+
+
+def service(sites: list[Site], lectures: dict[str, FauxLecture] | None = None) -> SiteService:
+    return SiteService(
+        sites=FakeRepository(sites),  # type: ignore[arg-type]
+        readings=FauxDepotLectures(lectures or {}),  # type: ignore[arg-type]
+    )
+
+
+async def test_list_all_returns_the_repository_sites() -> None:
+    svc = service([site("a"), site("b")])
+
+    sites = await svc.list_all()
 
     assert [s.site_id for s in sites] == ["a", "b"]
 
 
 async def test_get_by_id_returns_the_matching_site() -> None:
-    service = SiteService(sites=FakeRepository([site("a")]))
+    svc = service([site("a")])
 
-    trouve = await service.get_by_id("a")
+    trouve = await svc.get_by_id("a")
 
     assert trouve.site_id == "a"
 
 
 async def test_get_by_id_raises_when_the_site_is_unknown() -> None:
-    service = SiteService(sites=FakeRepository([]))
+    svc = service([])
 
     with pytest.raises(SiteNotFoundError):
-        await service.get_by_id("inconnu")
+        await svc.get_by_id("inconnu")
+
+
+async def test_current_raises_when_the_site_is_unknown() -> None:
+    svc = service([])
+
+    with pytest.raises(SiteNotFoundError):
+        await svc.current("inconnu")
+
+
+async def test_current_returns_every_field_as_null_when_the_site_has_no_reading() -> None:
+    svc = service([site("a")])
+
+    actuel = await svc.current("a")
+
+    assert actuel.timestamp is None
+    assert actuel.consumption_kw is None
+    assert actuel.data_quality == "critical"
+    assert actuel.null_reasons == []
+
+
+async def test_current_copies_every_field_from_the_latest_reading() -> None:
+    svc = service([site("a")], {"a": FauxLecture(site_id="a")})
+
+    actuel = await svc.current("a")
+
+    assert actuel.timestamp == TIMESTAMP
+    assert actuel.site_type == "industriel"
+    assert actuel.consumption_kw == 87.34
+    assert actuel.voltage_v == 401.2
+    assert actuel.data_quality == "good"
+
+
+async def test_current_treats_an_unknown_data_quality_as_critical() -> None:
+    svc = service([site("a")], {"a": FauxLecture(site_id="a", data_quality=None)})
+
+    actuel = await svc.current("a")
+
+    assert actuel.data_quality == "critical"

apps/backend/tests/test_internal_alerts.py

@@ -0,0 +1,87 @@
+from datetime import UTC, datetime
+
+import pytest
+from sqlalchemy import text
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.db.session import get_session_factory
+from app.detection import internal_alerts
+from app.repositories.alert import AlertRepository
+from tests.repositories.test_reading import creer_lecture
+from tests.repositories.test_site import creer as creer_site
+
+
+def test_parse_args_defaults_to_no_site_and_no_instant() -> None:
+    arguments = internal_alerts.parse_args([])
+
+    assert arguments.site_id is None
+    assert arguments.now is None
+
+
+def test_parse_args_reads_the_site_id() -> None:
+    arguments = internal_alerts.parse_args(["--site-id", "site-1"])
+
+    assert arguments.site_id == "site-1"
+
+
+def test_parse_args_parses_the_instant_option() -> None:
+    arguments = internal_alerts.parse_args(["--now", "2026-09-16T12:00:00+00:00"])
+
+    assert arguments.now == datetime(2026, 9, 16, 12, tzinfo=UTC)
+
+
+def test_parse_instant_treats_a_naive_datetime_as_utc() -> None:
+    assert internal_alerts._parse_instant("2026-09-16T12:00:00") == datetime(
+        2026, 9, 16, 12, tzinfo=UTC
+    )
+
+
+def test_main_prints_how_many_alerts_were_recorded(
+    monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
+) -> None:
+    async def fausse_execution(*, now: datetime | None, site_id: str | None) -> int:
+        return 3
+
+    monkeypatch.setattr(internal_alerts, "run_detection", fausse_execution)
+
+    code = internal_alerts.main([])
+
+    assert code == 0
+    assert "3 nouvelle" in capsys.readouterr().out
+
+
+@pytest.mark.integration
+async def test_run_detection_writes_a_threshold_alert_end_to_end(session: AsyncSession) -> None:
+    # `run_detection` ouvre sa propre session et commite : `session.rollback()` seul ne défait
+    # rien ici (contrairement au reste de la suite), d'où le nettoyage explicite ci-dessous, sur
+    # le modèle de `tests/api/test_matrice_acces.py`.
+    site = await creer_site(session, capacity_kw=100.0)
+    site_id = site.site_id
+    instant = datetime(2026, 9, 16, 12, tzinfo=UTC)
+    await creer_lecture(session, site_id=site_id, timestamp=instant, consumption_kw=150.0)
+    await session.commit()
+
+    try:
+        nombre = await internal_alerts.run_detection(now=instant, site_id=site_id)
+
+        alertes = await AlertRepository(session).list_all(site_id=site_id)
+        types = [a.type for a in alertes]
+        await session.rollback()
+
+        assert nombre == 1
+        assert types == ["threshold"]
+    finally:
+        # `site.site_id` n'est plus sûr après `session.rollback()` : le rollback expire tous les
+        # objets de la session (indépendamment d'`expire_on_commit`), et y accéder ici relance une
+        # requête hors contexte async. D'où `site_id`, capturé avant.
+        async with get_session_factory()() as nettoyage:
+            await nettoyage.execute(
+                text("delete from alert where site_id = :site_id"), {"site_id": site_id}
+            )
+            await nettoyage.execute(
+                text("delete from reading where site_id = :site_id"), {"site_id": site_id}
+            )
+            await nettoyage.execute(
+                text("delete from site where site_id = :site_id"), {"site_id": site_id}
+            )
+            await nettoyage.commit()

apps/backend/tests/test_static_assets.py

@@ -0,0 +1,13 @@
+# Piège : le logo est committé indépendamment à deux endroits (`app/static/`, servi par
+# `/docs`/`/redoc`, et `apps/frontend/public/`, servi au front) faute d'étape de build partagée.
+# Sans ce test, une mise à jour d'un seul des deux fichiers dérive silencieusement : rien en CI
+# ne le détecte.
+
+from pathlib import Path
+
+BACKEND_LOGO = Path(__file__).parent.parent / "app" / "static" / "logo-icon.png"
+FRONTEND_LOGO = Path(__file__).parent.parent.parent / "frontend" / "public" / "logo-icon.png"
+
+
+def test_the_backend_logo_stays_in_sync_with_the_frontend_one() -> None:
+    assert BACKEND_LOGO.read_bytes() == FRONTEND_LOGO.read_bytes()

apps/backend/uv.lock

@@ -326,6 +326,7 @@ dependencies = [
     { name = "argon2-cffi" },
     { name = "asyncpg" },
     { name = "fastapi" },
+    { name = "httpx" },
     { name = "pandas" },
     { name = "prometheus-fastapi-instrumentator" },
     { name = "pydantic", extra = ["email"] },
@@ -338,7 +339,6 @@ dependencies = [
 
 [package.dev-dependencies]
 dev = [
-    { name = "httpx" },
     { name = "mypy" },
     { name = "pandas-stubs" },
     { name = "pytest" },
@@ -355,6 +355,7 @@ requires-dist = [
     { name = "argon2-cffi", specifier = ">=23.1" },
     { name = "asyncpg", specifier = ">=0.31.0" },
     { name = "fastapi", specifier = ">=0.141.1" },
+    { name = "httpx", specifier = ">=0.28.1" },
     { name = "pandas", specifier = ">=3.0.5" },
     { name = "prometheus-fastapi-instrumentator", specifier = ">=8.1.0" },
     { name = "pydantic", extras = ["email"], specifier = ">=2.13.5" },
@@ -367,7 +368,6 @@ requires-dist = [
 
 [package.metadata.requires-dev]
 dev = [
-    { name = "httpx", specifier = ">=0.28.1" },
     { name = "mypy", specifier = ">=2.3.1" },
     { name = "pandas-stubs", specifier = ">=3.0.5.260914" },
     { name = "pytest", specifier = ">=9.1.1" },

apps/frontend/README.md

@@ -76,6 +76,13 @@ Points à vérifier après toute regénération :
    côté backend. Le `docker-compose.yml` n'a aucun service frontend.
 4. Ajouter le `Dockerfile` multi-stage (build Angular puis service statique nginx).
 
+## Design système
+
+Tokens (couleurs, typo, espacements) et composants partagés (`ev-button`, `ev-card`,
+`ev-alert`, `ev-badge`) sont documentés dans
+[`docs/architecture/32-design-systeme-frontend.md`](../../docs/architecture/32-design-systeme-frontend.md).
+Toute nouvelle page doit les réutiliser plutôt que définir ses propres valeurs.
+
 ## Additional Resources
 
 For more information on using the Angular CLI, including detailed command references, visit the [Angular CLI Overview and Command Reference](https://angular.dev/tools/cli) page.

apps/frontend/angular.json

@@ -86,15 +86,6 @@
               "text-summary",
               "lcov",
               "html"
-            ],
-            "reporters": [
-              "default",
-              [
-                "junit",
-                {
-                  "outputFile": "test-results/junit.xml"
-                }
-              ]
             ]
           }
         }

apps/frontend/sonar-project.properties

@@ -0,0 +1,18 @@
+sonar.projectKey=ProjetPiscine_EnerVision
+sonar.organization=groupe3-ener-vision
+sonar.sourceEncoding=UTF-8
+
+#  Dossier contenant le code source
+sonar.sources=apps/frontend/src,apps/backend/app
+sonar.tests=apps/backend/tests
+
+#  Liste des fichiers et dossiers à exclure de l'analyse
+#  Liste des fichiers et dossiers à exclure de l'analyse
+sonar.exclusions=**/node_modules/**,**/dist/**,**/*.spec.js,**/*.test.js,github,db,ml,docker-compose.yml,**/**/Dockerfile,**/**/proxy.conf.json,**/**/package.json,**/**/angular.json
+
+#  Chemin vers le rapport de couverture de code
+#  Fichier généré par Vitest
+#  Chemin vers le rapport de couverture de code
+#  Fichier généré par Vitest
+sonar.javascript.lcov.reportPaths=apps/frontend/coverage/frontend/lcov.info
+sonar.python.coverage.reportPaths=apps/backend/cov.info

apps/frontend/src/app/app.routes.ts

@@ -12,4 +12,15 @@ export const routes: Routes = [
     canActivate: [authGuard],
     loadComponent: () => import('./features/dashboard/dashboard').then(m => m.Dashboard),
   },
+  {
+    path: 'sites',
+    canActivate: [authGuard],
+    loadComponent: () => import('./features/sites/site-list/site-list').then(m => m.SiteList),
+  },
+  {
+    path: 'sites/:siteId',
+    canActivate: [authGuard],
+    loadComponent: () =>
+      import('./features/sites/site-detail/site-detail').then((m) => m.SiteDetail),
+  },
 ];

apps/frontend/src/app/core/interceptors/mock-api-interceptor.spec.ts

@@ -64,4 +64,13 @@ describe('mockApiInterceptor', () => {
     httpMock.expectNone(`${environment.apiUrl}/alerts`);
     expect((result as unknown[]).length).toBeGreaterThan(0);
   });
+
+  it('laisse toujours passer /predictions vers le réseau, même avec useMockFixtures activé', () => {
+    environment.useMockFixtures = true;
+
+    http.get(`${environment.apiUrl}/predictions`).subscribe();
+
+    const req = httpMock.expectOne(`${environment.apiUrl}/predictions`);
+    req.flush({ timestamp: '2026-09-18T09:00:00Z', sites: [] });
+  });
 });

apps/frontend/src/app/core/interceptors/mock-api-interceptor.ts

@@ -26,5 +26,7 @@ export const mockApiInterceptor: HttpInterceptorFn = (req, next) => {
   if (req.url.endsWith(`${environment.apiUrl}/alerts`)) {
     return of(new HttpResponse({ status: 200, body: ALERTS_FIXTURE }));
   }
+  // Volontairement jamais mocké, contrairement à `stats`/`alerts` : les prévisions sont servies
+  // par l'API réelle dès maintenant (au même titre que `/auth/*`, déjà toujours réel).
   return next(req);
 };

apps/frontend/src/app/core/services/predictions.service.spec.ts

@@ -0,0 +1,35 @@
+import { TestBed } from '@angular/core/testing';
+import { provideHttpClient } from '@angular/common/http';
+import { provideHttpClientTesting, HttpTestingController } from '@angular/common/http/testing';
+import { PredictionsService } from './predictions.service';
+import { environment } from '../../../environments/environment';
+
+describe('PredictionsService', () => {
+  let service: PredictionsService;
+  let httpMock: HttpTestingController;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [provideHttpClient(), provideHttpClientTesting()],
+    });
+    service = TestBed.inject(PredictionsService);
+    httpMock = TestBed.inject(HttpTestingController);
+  });
+
+  afterEach(() => httpMock.verify());
+
+  it('appelle le bon endpoint et retourne un résumé de prévisions', () => {
+    let result: unknown;
+    service.getPredictions().subscribe((r) => (result = r));
+
+    const req = httpMock.expectOne(`${environment.apiUrl}/predictions`);
+    expect(req.request.method).toBe('GET');
+
+    req.flush({
+      timestamp: '2026-09-18T09:00:00Z',
+      sites: [{ site_id: 'SITE001', site_name: 'Test', prediction: null }],
+    });
+
+    expect((result as { sites: unknown[] }).sites.length).toBe(1);
+  });
+});

apps/frontend/src/app/core/services/predictions.service.ts

@@ -0,0 +1,13 @@
+import { Service, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { environment } from '../../../environments/environment';
+import { PredictionSummary } from '../../shared/models/prediction.model';
+
+@Service()
+export class PredictionsService {
+  private http = inject(HttpClient);
+
+  getPredictions() {
+    return this.http.get<PredictionSummary>(`${environment.apiUrl}/predictions`);
+  }
+}

apps/frontend/src/app/core/services/readings.service.spec.ts

@@ -0,0 +1,50 @@
+import { TestBed } from '@angular/core/testing';
+import { provideHttpClient } from '@angular/common/http';
+import { provideHttpClientTesting, HttpTestingController } from '@angular/common/http/testing';
+import { ReadingsService } from './readings.service';
+import { environment } from '../../../environments/environment';
+
+describe('ReadingsService', () => {
+  let service: ReadingsService;
+  let httpMock: HttpTestingController;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [provideHttpClient(), provideHttpClientTesting()],
+    });
+    service = TestBed.inject(ReadingsService);
+    httpMock = TestBed.inject(HttpTestingController);
+  });
+
+  afterEach(() => httpMock.verify());
+
+  it("demande l'historique du site avec la fenêtre temporelle donnée", () => {
+    let result: unknown;
+    service
+      .getHistory('SITE001', '2026-09-16T00:00:00Z', '2026-09-17T00:00:00Z')
+      .subscribe((r) => (result = r));
+
+    const req = httpMock.expectOne(
+      (r) => r.url === `${environment.apiUrl}/readings` && r.method === 'GET',
+    );
+    expect(req.request.params.get('site_id')).toBe('SITE001');
+    expect(req.request.params.get('start')).toBe('2026-09-16T00:00:00Z');
+    expect(req.request.params.get('end')).toBe('2026-09-17T00:00:00Z');
+
+    req.flush([{ reading_id: 1, site_id: 'SITE001', consumption_kw: 12.5 }]);
+
+    expect((result as unknown[]).length).toBe(1);
+  });
+
+  it('ne pose pas de paramètres start/end quand ils sont omis', () => {
+    service.getHistory('SITE001').subscribe();
+
+    const req = httpMock.expectOne(
+      (r) => r.url === `${environment.apiUrl}/readings` && r.method === 'GET',
+    );
+    expect(req.request.params.has('start')).toBe(false);
+    expect(req.request.params.has('end')).toBe(false);
+
+    req.flush([]);
+  });
+});

apps/frontend/src/app/core/services/readings.service.ts

@@ -0,0 +1,20 @@
+import { Service, inject } from '@angular/core';
+import { HttpClient, HttpParams } from '@angular/common/http';
+import { environment } from '../../../environments/environment';
+import { Reading } from '../../shared/models/reading.model';
+
+@Service()
+export class ReadingsService {
+  private http = inject(HttpClient);
+
+  getHistory(siteId: string, start?: string, end?: string) {
+    let params = new HttpParams().set('site_id', siteId);
+    if (start) {
+      params = params.set('start', start);
+    }
+    if (end) {
+      params = params.set('end', end);
+    }
+    return this.http.get<Reading[]>(`${environment.apiUrl}/readings`, { params });
+  }
+}

apps/frontend/src/app/core/services/sites.service.spec.ts

@@ -0,0 +1,87 @@
+import { TestBed } from '@angular/core/testing';
+import { provideHttpClient } from '@angular/common/http';
+import { provideHttpClientTesting, HttpTestingController } from '@angular/common/http/testing';
+import { SitesService } from './sites.service';
+import { environment } from '../../../environments/environment';
+
+describe('SitesService', () => {
+  let service: SitesService;
+  let httpMock: HttpTestingController;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [provideHttpClient(), provideHttpClientTesting()],
+    });
+    service = TestBed.inject(SitesService);
+    httpMock = TestBed.inject(HttpTestingController);
+  });
+
+  afterEach(() => httpMock.verify());
+
+  it('appelle le bon endpoint et retourne la liste des sites', () => {
+    let result: unknown;
+    service.getSites().subscribe((r) => (result = r));
+
+    const req = httpMock.expectOne(`${environment.apiUrl}/sites`);
+    expect(req.request.method).toBe('GET');
+
+    req.flush([
+      {
+        site_id: 'SITE001',
+        site_name: 'Site 1',
+        site_type: 'industriel',
+        location: 'Nantes',
+        capacity_kw: 500,
+        status: 'actif',
+      },
+    ]);
+
+    expect((result as { site_id: string }[])[0].site_id).toBe('SITE001');
+  });
+
+  it('appelle le bon endpoint et retourne un site', () => {
+    let result: unknown;
+    service.getSite('SITE001').subscribe((r) => (result = r));
+
+    const req = httpMock.expectOne(`${environment.apiUrl}/sites/SITE001`);
+    expect(req.request.method).toBe('GET');
+
+    req.flush({
+      site_id: 'SITE001',
+      site_name: 'Site 1',
+      site_type: 'industriel',
+      location: 'Nantes',
+      capacity_kw: 500,
+      status: 'actif',
+    });
+
+    expect((result as { site_id: string }).site_id).toBe('SITE001');
+  });
+
+  it('appelle le bon endpoint et retourne la mesure courante du site', () => {
+    let result: unknown;
+    service.getCurrent('SITE001').subscribe((r) => (result = r));
+
+    const req = httpMock.expectOne(`${environment.apiUrl}/sites/SITE001/current`);
+    expect(req.request.method).toBe('GET');
+
+    req.flush({
+      timestamp: '2026-09-17T10:00:00Z',
+      site_id: 'SITE001',
+      site_type: 'industriel',
+      consumption_kw: 120,
+      consumption_kwh: null,
+      voltage_v: null,
+      current_a: null,
+      power_factor: null,
+      temperature_celsius: 22,
+      humidity_percent: 55,
+      null_reasons: ['electrical_sensor_failure'],
+      data_quality: 'partial',
+    });
+
+    expect((result as { null_reasons: string[] }).null_reasons).toEqual([
+      'electrical_sensor_failure',
+    ]);
+  });
+});

apps/frontend/src/app/core/services/sites.service.ts

@@ -0,0 +1,22 @@
+import { Service, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { environment } from '../../../environments/environment';
+import { Site } from '../../shared/models/site.model';
+import { SiteCurrent } from '../../shared/models/site-current.model';
+
+@Service()
+export class SitesService {
+  private http = inject(HttpClient);
+
+  getSites() {
+    return this.http.get<Site[]>(`${environment.apiUrl}/sites`);
+  }
+
+  getSite(siteId: string) {
+    return this.http.get<Site>(`${environment.apiUrl}/sites/${siteId}`);
+  }
+
+  getCurrent(siteId: string) {
+    return this.http.get<SiteCurrent>(`${environment.apiUrl}/sites/${siteId}/current`);
+  }
+}

apps/frontend/src/app/features/auth/change-password/change-password.html

@@ -1,31 +1,38 @@
 <div class="auth-page">
-  <form class="auth-card" [formGroup]="form" (ngSubmit)="onSubmit()">
+  <form class="auth-card-wrapper" [formGroup]="form" (ngSubmit)="onSubmit()">
+    <ev-card>
+      <ev-brand class="auth-brand" />
       <h1>Nouveau mot de passe</h1>
-    <p class="auth-subtitle">Votre mot de passe est provisoire, vous devez le modifier avant de continuer</p>
+      <p class="auth-subtitle">
+        Votre mot de passe est provisoire, vous devez le modifier avant de continuer
+      </p>
 
-    <label for="current_password">Mot de passe actuel</label>
+      <label class="form-label" for="current_password">Mot de passe actuel</label>
       <input
         id="current_password"
+        class="form-input"
         type="password"
         formControlName="current_password"
         autocomplete="current-password"
       />
 
-    <label for="new_password">Nouveau mot de passe</label>
+      <label class="form-label" for="new_password">Nouveau mot de passe</label>
       <input
         id="new_password"
+        class="form-input"
         type="password"
         formControlName="new_password"
         autocomplete="new-password"
       />
-    <span class="auth-hint">{{ passwordHint }}</span>
+      <span class="form-hint">{{ passwordHint }}</span>
 
       @if (errorMessage()) {
-      <p class="auth-error">{{ errorMessage() }}</p>
+        <ev-alert severity="danger">{{ errorMessage() }}</ev-alert>
       }
 
-    <button type="submit" [disabled]="form.invalid || isLoading()">
+      <ev-button type="submit" [disabled]="form.invalid || isLoading()">
         {{ isLoading() ? 'Modification...' : 'Valider' }}
-    </button>
+      </ev-button>
+    </ev-card>
   </form>
 </div>

apps/frontend/src/app/features/auth/change-password/change-password.scss

@@ -1,88 +0,0 @@
-:host {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  min-height: 100vh;
-  background: #f3f4f6;
-  font-family: 'Segoe UI', system-ui, sans-serif;
-}
-
-.auth-card {
-  background: #ffffff;
-  border: 1px solid #e5e7eb;
-  border-radius: 12px;
-  padding: 2.5rem;
-  width: 100%;
-  max-width: 360px;
-  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
-  display: flex;
-  flex-direction: column;
-
-  h1 {
-    margin: 0;
-    font-size: 1.5rem;
-    font-weight: 700;
-    color: #1f2937;
-  }
-
-  .auth-subtitle {
-    margin: 0.25rem 0 1.5rem;
-    color: #6b7280;
-    font-size: 0.9rem;
-    line-height: 1.4;
-  }
-
-  label {
-    font-size: 0.85rem;
-    font-weight: 600;
-    color: #374151;
-    margin-bottom: 0.35rem;
-    margin-top: 1rem;
-  }
-
-  input {
-    padding: 0.6rem 0.75rem;
-    border: 1px solid #d1d5db;
-    border-radius: 8px;
-    font-size: 0.95rem;
-
-    &:focus {
-      outline: none;
-      border-color: #3b82f6;
-      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
-    }
-  }
-
-  button {
-    margin-top: 1.5rem;
-    padding: 0.7rem;
-    background: #3b82f6;
-    color: #fff;
-    border: none;
-    border-radius: 8px;
-    font-size: 0.95rem;
-    font-weight: 600;
-    cursor: pointer;
-
-    &:disabled {
-      background: #9ca3af;
-      cursor: not-allowed;
-    }
-
-    &:not(:disabled):hover {
-      background: #2563eb;
-    }
-  }
-}
-
-.auth-hint {
-  font-size: 0.75rem;
-  color: #9ca3af;
-  margin-top: 0.25rem;
-}
-
-.auth-error {
-  margin: 0.75rem 0 0;
-  color: #dc2626;
-  font-size: 0.85rem;
-}

apps/frontend/src/app/features/auth/change-password/change-password.spec.ts

@@ -63,7 +63,7 @@ describe('ChangePassword', () => {
   fixture.detectChanges(); // rend le bloc @if (errorMessage())
 
   expect(component.errorMessage()).toContain('incorrect');
-  const errorEl = fixture.nativeElement.querySelector('.auth-error');
+  const errorEl = fixture.nativeElement.querySelector('.ev-alert');
   expect(errorEl?.textContent).toContain('incorrect');
   });
 
@@ -73,7 +73,7 @@ describe('ChangePassword', () => {
 
   const button = fixture.nativeElement.querySelector('button[type="submit"]');
   expect(button.disabled).toBe(true);
-  expect(fixture.nativeElement.querySelector('.auth-error')).toBeNull();
+  expect(fixture.nativeElement.querySelector('.ev-alert')).toBeNull();
   });
 
   it('déclenche onSubmit via la soumission réelle du formulaire (ngSubmit)', () => {

apps/frontend/src/app/features/auth/change-password/change-password.ts

@@ -2,12 +2,16 @@ import { Component, inject, signal } from '@angular/core';
 import { ReactiveFormsModule, FormBuilder, Validators } from '@angular/forms';
 import { Router } from '@angular/router';
 import { AuthService } from '../../../core/services/auth.service';
+import { Button } from '../../../shared/components/ui/button/button';
+import { Card } from '../../../shared/components/ui/card/card';
+import { Alert } from '../../../shared/components/ui/alert/alert';
+import { Brand } from '../../../shared/components/ui/brand/brand';
 import { passwordValidators, PASSWORD_HINT } from '../../../shared/validators/password.validator';
 
 @Component({
   selector: 'app-change-password',
   standalone: true,
-  imports: [ReactiveFormsModule],
+  imports: [ReactiveFormsModule, Button, Card, Alert, Brand],
   templateUrl: './change-password.html',
   styleUrl: './change-password.scss',
 })
@@ -36,7 +40,9 @@ export class ChangePassword {
       },
       error: () => {
         this.isLoading.set(false);
-        this.errorMessage.set(`Mot de passe actuel incorrect, ou nouveau mot de passe invalide (${this.passwordHint}).`);
+        this.errorMessage.set(
+          `Mot de passe actuel incorrect, ou nouveau mot de passe invalide (${this.passwordHint}).`,
+        );
       },
     });
   }

apps/frontend/src/app/features/auth/login/login.html

@@ -1,38 +1,43 @@
 <div class="auth-page">
-  <form class="auth-card" [formGroup]="form" (ngSubmit)="onSubmit()">
+  <form class="auth-card-wrapper" [formGroup]="form" (ngSubmit)="onSubmit()">
+    <ev-card>
+      <ev-brand class="auth-brand" />
       <h1>Connexion</h1>
       <p class="auth-subtitle">Accédez à votre espace EnerVision</p>
 
-    <label for="email">Email</label>
+      <label class="form-label" for="email">Email</label>
       <input
         id="email"
+        class="form-input"
         type="email"
         formControlName="email"
         autocomplete="username"
         placeholder="vous@enervision.fr"
       />
 
-    <label for="password">Mot de passe</label>
+      <label class="form-label" for="password">Mot de passe</label>
       <input
         id="password"
+        class="form-input"
         type="password"
         formControlName="password"
         autocomplete="current-password"
       />
 
       @if (errorMessage()) {
-      <p class="auth-error">
+        <ev-alert severity="danger">
           {{ errorMessage() }}
           @if (retryAfterSeconds(); as seconds) {
             (réessayez dans {{ seconds }}s)
           }
-      </p>
+        </ev-alert>
       }
 
-    <button type="submit" [disabled]="form.invalid || isLoading()">
+      <ev-button type="submit" [disabled]="form.invalid || isLoading()">
         {{ isLoading() ? 'Connexion...' : 'Se connecter' }}
-    </button>
+      </ev-button>
 
       <p class="auth-link"><a routerLink="/forgot-password">Mot de passe oublié ?</a></p>
+    </ev-card>
   </form>
 </div>

apps/frontend/src/app/features/auth/login/login.scss

@@ -1,85 +1,3 @@
-:host {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  min-height: 100vh;
-  background: #f3f4f6;
-  font-family: 'Segoe UI', system-ui, sans-serif;
-}
-
-.auth-card {
-  background: #ffffff;
-  border: 1px solid #e5e7eb;
-  border-radius: 12px;
-  padding: 2.5rem;
-  width: 100%;
-  max-width: 360px;
-  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
-  display: flex;
-  flex-direction: column;
-
-  h1 {
-    margin: 0;
-    font-size: 1.5rem;
-    font-weight: 700;
-    color: #1f2937;
-  }
-
-  .auth-subtitle {
-    margin: 0.25rem 0 1.5rem;
-    color: #6b7280;
-    font-size: 0.9rem;
-  }
-
-  label {
-    font-size: 0.85rem;
-    font-weight: 600;
-    color: #374151;
-    margin-bottom: 0.35rem;
-    margin-top: 1rem;
-  }
-
-  input {
-    padding: 0.6rem 0.75rem;
-    border: 1px solid #d1d5db;
-    border-radius: 8px;
-    font-size: 0.95rem;
-
-    &:focus {
-      outline: none;
-      border-color: #3b82f6;
-      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
-    }
-  }
-
-  button {
-    margin-top: 1.5rem;
-    padding: 0.7rem;
-    background: #3b82f6;
-    color: #fff;
-    border: none;
-    border-radius: 8px;
-    font-size: 0.95rem;
-    font-weight: 600;
-    cursor: pointer;
-
-    &:disabled {
-      background: #9ca3af;
-      cursor: not-allowed;
-    }
-
-    &:not(:disabled):hover {
-      background: #2563eb;
-    }
-  }
-}
-
-.auth-error {
-  margin: 0.75rem 0 0;
-  color: #dc2626;
-  font-size: 0.85rem;
-}
-
 .auth-link {
   margin-top: 1rem;
   font-size: 0.85rem;

apps/frontend/src/app/features/auth/login/login.spec.ts

@@ -79,7 +79,7 @@ describe('Login', () => {
   fixture.detectChanges(); // rend le bloc @if (errorMessage()) du template
 
   expect(component.errorMessage()).toBe('Email ou mot de passe incorrect.');
-  const errorEl = fixture.nativeElement.querySelector('.auth-error');
+  const errorEl = fixture.nativeElement.querySelector('.ev-alert');
   expect(errorEl?.textContent).toContain('Email ou mot de passe incorrect.');
   });
 
@@ -96,7 +96,7 @@ describe('Login', () => {
     fixture.detectChanges(); // rend aussi le sous-bloc @if (retryAfterSeconds(); as seconds)
 
     expect(component.retryAfterSeconds()).toBe(30);
-    const errorEl = fixture.nativeElement.querySelector('.auth-error');
+    const errorEl = fixture.nativeElement.querySelector('.ev-alert');
     expect(errorEl?.textContent).toContain('30s');
   });
 
@@ -114,7 +114,7 @@ describe('Login', () => {
 
     const button = fixture.nativeElement.querySelector('button[type="submit"]');
     expect(button.disabled).toBe(true);
-    expect(fixture.nativeElement.querySelector('.auth-error')).toBeNull();
+    expect(fixture.nativeElement.querySelector('.ev-alert')).toBeNull();
   });
 
  it('déclenche onSubmit via la soumission réelle du formulaire (ngSubmit)', () => {

apps/frontend/src/app/features/auth/login/login.ts

@@ -3,12 +3,19 @@ import { ReactiveFormsModule, FormBuilder, Validators } from '@angular/forms';
 import { ActivatedRoute, Router, RouterLink } from '@angular/router';
 import { HttpErrorResponse } from '@angular/common/http';
 import { AuthService } from '../../../core/services/auth.service';
-import { MESSAGE_LIEN_RESET_INVALIDE, MOTIF_LIEN_RESET_INVALIDE } from '../../../shared/models/auth-redirect-reason';
+import { Button } from '../../../shared/components/ui/button/button';
+import { Card } from '../../../shared/components/ui/card/card';
+import { Alert } from '../../../shared/components/ui/alert/alert';
+import { Brand } from '../../../shared/components/ui/brand/brand';
+import {
+  MESSAGE_LIEN_RESET_INVALIDE,
+  MOTIF_LIEN_RESET_INVALIDE,
+} from '../../../shared/models/auth-redirect-reason';
 
 @Component({
   selector: 'app-login',
   standalone: true,
-  imports: [ReactiveFormsModule, RouterLink],
+  imports: [ReactiveFormsModule, RouterLink, Button, Card, Alert, Brand],
   templateUrl: './login.html',
   styleUrl: './login.scss',
 })

apps/frontend/src/app/features/dashboard/dashboard.html

@@ -1,19 +1,39 @@
 <div class="dashboard">
   <header class="dashboard__header">
+    <div class="dashboard__brand">
+      <a routerLink="/dashboard" class="ev-brand-link">
+        <ev-brand class="dashboard__logo" />
+      </a>
       <div>
         <h1>Vue d'ensemble</h1>
         <p class="dashboard__subtitle">Consommation instantanée du parc</p>
       </div>
-    <button type="button" class="logout-button" (click)="onLogout()">Déconnexion</button>
+    </div>
+    <div class="dashboard__actions">
+      <a routerLink="/sites" class="ev-link">Voir les sites</a>
+      <ev-button
+        class="logout-button"
+        variant="secondary"
+        [fullWidth]="false"
+        (click)="onLogout()"
+        >Déconnexion</ev-button
+      >
+    </div>
   </header>
 
-  @if (error(); as message) {
+  @if (statsError(); as message) {
-    <p class="banner-error" role="alert">{{ message }}</p>
+    <ev-alert severity="danger" class="banner-error">{{ message }}</ev-alert>
+  }
+  @if (alertsError(); as message) {
+    <ev-alert severity="danger" class="banner-error">{{ message }}</ev-alert>
+  }
+  @if (predictionsError(); as message) {
+    <ev-alert severity="danger" class="banner-error">{{ message }}</ev-alert>
   }
 
   @if (stats(); as s) {
     <section class="overview">
-      <div class="card card--gauge">
+      <ev-card class="card card--gauge">
         <span class="card__label">Consommation vs capacité</span>
         <app-consumption-gauge
           [consumption]="s.total_consumption_kw"
@@ -23,20 +43,20 @@
           >{{ s.total_consumption_kw | number: '1.0-1' }} /
           {{ s.total_capacity_kw | number }} kW</span
         >
-      </div>
+      </ev-card>
 
-      <div class="card">
+      <ev-card class="card">
         <span class="card__label">Charge moyenne du parc</span>
         <span class="card__value">{{ s.average_load_percent }} %</span>
         <div class="progress-bar">
           <div class="progress-bar__fill" [style.width.%]="s.average_load_percent"></div>
         </div>
-      </div>
+      </ev-card>
 
-      <div class="card">
+      <ev-card class="card">
         <span class="card__label">Sites suivis</span>
         <span class="card__value">{{ s.total_sites }}</span>
-      </div>
+      </ev-card>
     </section>
 
     <section class="chart-section">
@@ -50,12 +70,41 @@
       <h2>Alertes actives</h2>
       <ul class="alerts-list">
         @for (alert of alerts(); track alert.alert_id) {
-          <li class="alert-item" [class]="'alert-item--' + alert.severity">
+          <li class="alert-item">
-            <span class="alert-item__badge">{{ alert.severity }}</span>
+            <ev-badge [tone]="badgeToneForSeverity(alert.severity)">{{ alert.severity }}</ev-badge>
             <span class="alert-item__message">{{ alert.message }}</span>
           </li>
         }
       </ul>
     </section>
   }
+
+  @if (predictions().length > 0) {
+    <section class="predictions-section">
+      <h2>Prévisions de consommation</h2>
+      <ul class="predictions-list">
+        @for (site of predictions(); track site.site_id) {
+          <li class="prediction-item">
+            <span class="prediction-item__site">{{ site.site_name }}</span>
+            @if (site.prediction; as prediction) {
+              @if (prediction.status === 'available') {
+                <span class="prediction-item__value">
+                  {{ prediction.predicted_value | number: '1.0-1' }} kWh
+                  <span class="prediction-item__target"
+                    >{{ prediction.target_at | date: "dd/MM 'à' HH:mm" }}</span
+                  >
+                </span>
+              } @else {
+                <ev-badge [tone]="badgeToneForPredictionStatus(prediction.status)">{{
+                  prediction.status === 'insufficient_data' ? 'Historique insuffisant' : 'Erreur'
+                }}</ev-badge>
+              }
+            } @else {
+              <ev-badge tone="neutral">Pas encore de prévision</ev-badge>
+            }
+          </li>
+        }
+      </ul>
+    </section>
+  }
 </div>

apps/frontend/src/app/features/dashboard/dashboard.scss

@@ -1,23 +1,22 @@
 :host {
-  --color-good: #2e7d32;
-  --color-partial: #f9a825;
-  --color-degraded: #ef6c00;
-  --color-critical: #c62828;
-  --color-bg-card: #ffffff;
-  --color-border: #e5e7eb;
-  --color-text-muted: #6b7280;
-  --radius: 10px;
-
   display: block;
-  font-family: 'Segoe UI', system-ui, sans-serif;
+  color: var(--color-text);
-  color: #1f2937;
+  padding: 2.5rem 2rem;
-  padding: 2rem;
   max-width: 1100px;
   margin: 0 auto;
 }
 
 .dashboard__header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
   margin-bottom: 2rem;
+}
+
+.dashboard__brand {
+  display: flex;
+  align-items: center;
+  gap: 0.85rem;
 
   h1 {
     margin: 0;
@@ -26,11 +25,21 @@
   }
 }
 
+.dashboard__logo {
+  font-size: 1.3rem;
+}
+
 .dashboard__subtitle {
   margin: 0.25rem 0 0;
   color: var(--color-text-muted);
 }
 
+.dashboard__actions {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+}
+
 h2 {
   font-size: 1.1rem;
   font-weight: 600;
@@ -38,13 +47,8 @@ h2 {
 }
 
 .banner-error {
+  display: block;
   margin: 0 0 1.5rem;
-  padding: 0.75rem 1rem;
-  border: 1px solid var(--color-critical);
-  border-left-width: 4px;
-  border-radius: var(--radius);
-  background: #fdecea;
-  color: var(--color-critical);
 }
 
 .overview {
@@ -55,14 +59,8 @@ h2 {
 }
 
 .card {
-  background: var(--color-bg-card);
-  border: 1px solid var(--color-border);
-  border-radius: var(--radius);
   padding: 1.25rem;
-  display: flex;
-  flex-direction: column;
   gap: 0.35rem;
-  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
 }
 
 .card--gauge {
@@ -84,16 +82,16 @@ h2 {
 
 .progress-bar {
   height: 6px;
-  background: #e5e7eb;
+  background: var(--color-border-light);
-  border-radius: 999px;
+  border-radius: var(--radius-pill);
   overflow: hidden;
   margin-top: 0.25rem;
 }
 
 .progress-bar__fill {
   height: 100%;
-  background: #3b82f6;
+  background: var(--color-primary);
-  border-radius: 999px;
+  border-radius: var(--radius-pill);
   transition: width 0.3s ease;
 }
 
@@ -115,59 +113,48 @@ h2 {
   align-items: center;
   gap: 0.75rem;
   padding: 0.7rem 1rem;
-  border-radius: var(--radius);
+  border-radius: var(--radius-md);
-  background: #fef2f2;
+  background: var(--color-danger-bg);
-  border: 1px solid #fecaca;
+  border: 1px solid var(--color-danger-border);
-}
-
-.alert-item__badge {
-  font-size: 0.7rem;
-  font-weight: 700;
-  text-transform: uppercase;
-  padding: 0.2rem 0.55rem;
-  border-radius: 999px;
-  color: #fff;
-  background: var(--color-critical);
-  flex-shrink: 0;
-}
-
-.alert-item--high .alert-item__badge {
-  background: var(--color-degraded);
-}
-.alert-item--medium .alert-item__badge {
-  background: var(--color-partial);
-}
-.alert-item--low .alert-item__badge {
-  background: var(--color-good);
 }
 
 .alert-item__message {
   font-size: 0.9rem;
 }
-.dashboard__header {
-  display: flex;
-  align-items: flex-start;
-  justify-content: space-between;
-  margin-bottom: 2rem;
 
-  h1 {
+.predictions-list {
+  list-style: none;
   margin: 0;
-    font-size: 1.75rem;
+  padding: 0;
-    font-weight: 700;
+  display: flex;
-  }
+  flex-direction: column;
+  gap: 0.5rem;
 }
 
-.logout-button {
+.prediction-item {
-  padding: 0.5rem 1rem;
+  display: flex;
-  background: #ffffff;
+  align-items: center;
-  border: 1px solid #d1d5db;
+  justify-content: space-between;
-  border-radius: 8px;
+  gap: 0.75rem;
-  font-size: 0.85rem;
+  padding: 0.7rem 1rem;
+  border-radius: var(--radius-md);
+  background: var(--color-surface);
+  border: 1px solid var(--color-border-light);
+}
+
+.prediction-item__site {
+  font-size: 0.9rem;
   font-weight: 600;
-  color: #374151;
+}
-  cursor: pointer;
 
-  &:hover {
+.prediction-item__value {
-    background: #f3f4f6;
+  font-size: 0.9rem;
+  font-weight: 600;
 }
+
+.prediction-item__target {
+  margin-left: 0.35rem;
+  font-size: 0.8rem;
+  font-weight: 400;
+  color: var(--color-text-muted);
 }

apps/frontend/src/app/features/dashboard/dashboard.spec.ts

@@ -4,8 +4,9 @@ import { of, throwError } from 'rxjs';
 import { Dashboard } from './dashboard';
 import { StatsService } from '../../core/services/stats.service';
 import { AlertsService } from '../../core/services/alerts.service';
+import { PredictionsService } from '../../core/services/predictions.service';
 import {AuthService} from '../../core/services/auth.service';
-import {Router} from '@angular/router';
+import {Router, provideRouter} from '@angular/router';
 
 vi.mock('chart.js', () => {
   class ChartMock {
@@ -17,18 +18,25 @@ vi.mock('chart.js', () => {
   return { Chart: ChartMock, registerables: [] };
 });
 
+function predictionsMock(sites: unknown[] = []) {
+  return { getPredictions: vi.fn().mockReturnValue(of({ timestamp: '2026-09-18T09:00:00Z', sites })) };
+}
+
 describe('Dashboard', () => {
   afterEach(() => vi.useRealTimers());
 
-  it('charge les stats et les alertes au démarrage', async () => {
+  it('charge les stats, les alertes et les prévisions au démarrage', async () => {
     const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
     const alertsMock = { getAlerts: vi.fn().mockReturnValue(of([{ alert_id: 'A1' }])) };
+    const predictions = predictionsMock([{ site_id: 'SITE001', site_name: 'Test', prediction: null }]);
 
     TestBed.configureTestingModule({
       imports: [Dashboard],
       providers: [
         { provide: StatsService, useValue: statsMock },
         { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictions },
+        provideRouter([]),
       ],
     });
 
@@ -41,8 +49,12 @@ describe('Dashboard', () => {
 
     expect(statsMock.getSummary).toHaveBeenCalled();
     expect(alertsMock.getAlerts).toHaveBeenCalled();
+    expect(predictions.getPredictions).toHaveBeenCalled();
     expect(fixture.componentInstance.alerts().length).toBe(1);
-    expect(fixture.componentInstance.error()).toBeNull();
+    expect(fixture.componentInstance.predictions().length).toBe(1);
+    expect(fixture.componentInstance.statsError()).toBeNull();
+    expect(fixture.componentInstance.alertsError()).toBeNull();
+    expect(fixture.componentInstance.predictionsError()).toBeNull();
   });
 
   it("signale l'indisponibilité puis repart au rafraîchissement suivant", () => {
@@ -60,6 +72,8 @@ describe('Dashboard', () => {
       providers: [
         { provide: StatsService, useValue: statsMock },
         { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictionsMock() },
+        provideRouter([]),
       ],
     });
 
@@ -68,13 +82,13 @@ describe('Dashboard', () => {
 
     vi.advanceTimersByTime(1);
     expect(statsMock.getSummary).toHaveBeenCalledTimes(1);
-    expect(fixture.componentInstance.error()).not.toBeNull();
+    expect(fixture.componentInstance.statsError()).not.toBeNull();
     expect(fixture.componentInstance.stats()).toBeNull();
 
     vi.advanceTimersByTime(10000);
     expect(statsMock.getSummary).toHaveBeenCalledTimes(2);
     expect(fixture.componentInstance.stats()).not.toBeNull();
-    expect(fixture.componentInstance.error()).toBeNull();
+    expect(fixture.componentInstance.statsError()).toBeNull();
   });
 
   it("n'interrompt pas la page quand le chargement des alertes échoue", () => {
@@ -86,6 +100,8 @@ describe('Dashboard', () => {
       providers: [
         { provide: StatsService, useValue: statsMock },
         { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictionsMock() },
+        provideRouter([]),
       ],
     });
 
@@ -93,32 +109,91 @@ describe('Dashboard', () => {
     fixture.detectChanges();
 
     expect(fixture.componentInstance.alerts().length).toBe(0);
+    expect(fixture.componentInstance.alertsError()).not.toBeNull();
   });
 
-  it('appelle logout et redirige vers /login au clic sur le bouton de déconnexion', () => {
+  it("n'interrompt pas la page quand le chargement des prévisions échoue", () => {
     const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
     const alertsMock = { getAlerts: vi.fn().mockReturnValue(of([])) };
-  const authMock = { logout: vi.fn().mockReturnValue(of(undefined)), clearSession: vi.fn() };
+    const predictions = {
-  const routerMock = { navigate: vi.fn() };
+      getPredictions: vi.fn().mockReturnValue(throwError(() => new Error('nope'))),
+    };
 
     TestBed.configureTestingModule({
       imports: [Dashboard],
       providers: [
         { provide: StatsService, useValue: statsMock },
         { provide: AlertsService, useValue: alertsMock },
-      { provide: AuthService, useValue: authMock },
+        { provide: PredictionsService, useValue: predictions },
-      { provide: Router, useValue: routerMock },
+        provideRouter([]),
       ],
     });
 
     const fixture = TestBed.createComponent(Dashboard);
     fixture.detectChanges();
 
+    expect(fixture.componentInstance.predictions().length).toBe(0);
+    expect(fixture.componentInstance.predictionsError()).not.toBeNull();
+  });
+
+  it("un rafraîchissement de stats n'efface pas une erreur de prévisions en attente", () => {
+    vi.useFakeTimers();
+    const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
+    const alertsMock = { getAlerts: vi.fn().mockReturnValue(of([])) };
+    const predictions = {
+      getPredictions: vi.fn().mockReturnValue(throwError(() => new Error('nope'))),
+    };
+
+    TestBed.configureTestingModule({
+      imports: [Dashboard],
+      providers: [
+        { provide: StatsService, useValue: statsMock },
+        { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictions },
+        provideRouter([]),
+      ],
+    });
+
+    const fixture = TestBed.createComponent(Dashboard);
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.predictionsError()).not.toBeNull();
+
+    // Plusieurs cycles de `timer(0, 10_000)` (stats) plus tard, l'erreur des prévisions doit
+    // toujours être visible : rien ne vient la rafraîchir tant que la section n'est pas rechargée.
+    vi.advanceTimersByTime(30000);
+
+    expect(fixture.componentInstance.predictionsError()).not.toBeNull();
+    expect(fixture.componentInstance.statsError()).toBeNull();
+  });
+
+  it('appelle logout et redirige vers /login au clic sur le bouton de déconnexion', () => {
+  const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
+  const alertsMock = { getAlerts: vi.fn().mockReturnValue(of([])) };
+  const authMock = { logout: vi.fn().mockReturnValue(of(undefined)), clearSession: vi.fn() };
+
+  TestBed.configureTestingModule({
+    imports: [Dashboard],
+    providers: [
+      { provide: StatsService, useValue: statsMock },
+      { provide: AlertsService, useValue: alertsMock },
+      { provide: PredictionsService, useValue: predictionsMock() },
+      { provide: AuthService, useValue: authMock },
+      provideRouter([]),
+    ],
+  });
+
+  const fixture = TestBed.createComponent(Dashboard);
+  fixture.detectChanges();
+
+  const router = TestBed.inject(Router);
+  const navigateSpy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
+
   const button = fixture.nativeElement.querySelector('.logout-button');
   button.click();
 
   expect(authMock.logout).toHaveBeenCalled();
-  expect(routerMock.navigate).toHaveBeenCalledWith(['/login']);
+  expect(navigateSpy).toHaveBeenCalledWith(['/login']);
   });
   it('déconnecte localement et redirige vers /login même si logout échoue côté réseau', () => {
   const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
@@ -127,25 +202,75 @@ describe('Dashboard', () => {
     logout: vi.fn().mockReturnValue(throwError(() => new Error('réseau indisponible'))),
     clearSession: vi.fn(),
   };
-  const routerMock = { navigate: vi.fn() };
-
   TestBed.configureTestingModule({
     imports: [Dashboard],
     providers: [
       { provide: StatsService, useValue: statsMock },
       { provide: AlertsService, useValue: alertsMock },
+      { provide: PredictionsService, useValue: predictionsMock() },
       { provide: AuthService, useValue: authMock },
-      { provide: Router, useValue: routerMock },
+      provideRouter([]),
     ],
   });
 
   const fixture = TestBed.createComponent(Dashboard);
   fixture.detectChanges();
 
+  const router = TestBed.inject(Router);
+  const navigateSpy = vi.spyOn(router, 'navigate').mockResolvedValue(true);
+
   const button = fixture.nativeElement.querySelector('.logout-button');
   button.click();
 
   expect(authMock.clearSession).toHaveBeenCalled();
-  expect(routerMock.navigate).toHaveBeenCalledWith(['/login']);
+  expect(navigateSpy).toHaveBeenCalledWith(['/login']);
+});
+
+  it('distingue le ton des sévérités high et critical', () => {
+    const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
+    const alertsMock = { getAlerts: vi.fn().mockReturnValue(of([])) };
+
+    TestBed.configureTestingModule({
+      imports: [Dashboard],
+      providers: [
+        { provide: StatsService, useValue: statsMock },
+        { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictionsMock() },
+        provideRouter([]),
+      ],
+    });
+
+    const fixture = TestBed.createComponent(Dashboard);
+    const dashboard = fixture.componentInstance;
+
+    expect(dashboard.badgeToneForSeverity('low')).toBe('success');
+    expect(dashboard.badgeToneForSeverity('medium')).toBe('warning');
+    expect(dashboard.badgeToneForSeverity('high')).toBe('danger');
+    expect(dashboard.badgeToneForSeverity('critical')).toBe('critical');
+    expect(dashboard.badgeToneForSeverity('high')).not.toBe(
+      dashboard.badgeToneForSeverity('critical'),
+    );
+  });
+
+  it('distingue le ton des statuts de prévision', () => {
+    const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
+    const alertsMock = { getAlerts: vi.fn().mockReturnValue(of([])) };
+
+    TestBed.configureTestingModule({
+      imports: [Dashboard],
+      providers: [
+        { provide: StatsService, useValue: statsMock },
+        { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictionsMock() },
+        provideRouter([]),
+      ],
+    });
+
+    const fixture = TestBed.createComponent(Dashboard);
+    const dashboard = fixture.componentInstance;
+
+    expect(dashboard.badgeToneForPredictionStatus('available')).toBe('success');
+    expect(dashboard.badgeToneForPredictionStatus('insufficient_data')).toBe('warning');
+    expect(dashboard.badgeToneForPredictionStatus('error')).toBe('danger');
   });
 });

apps/frontend/src/app/features/dashboard/dashboard.ts

@@ -1,59 +1,122 @@
-import { Component, OnInit, inject, signal, DestroyRef } from '@angular/core';
+import { Component, OnInit, inject, signal, DestroyRef, WritableSignal } from '@angular/core';
 import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
 import { timer, switchMap, catchError, EMPTY, Observable } from 'rxjs';
-import { DecimalPipe } from '@angular/common';
+import { DecimalPipe, DatePipe } from '@angular/common';
-import { Router } from '@angular/router';
+import { Router, RouterLink } from '@angular/router';
 import { StatsService } from '../../core/services/stats.service';
 import { ConsumptionGauge } from '../../shared/components/consumption-gauge/consumption-gauge';
 import { SiteLoadChart } from '../../shared/components/site-load-chart/site-load-chart';
 import { AlertsService } from '../../core/services/alerts.service';
+import { PredictionsService } from '../../core/services/predictions.service';
 import { AuthService } from '../../core/services/auth.service';
 import { StatsSummary } from '../../shared/models/stats.model';
-import { Alert } from '../../shared/models/alert.model';
+import { Alert, AlertSeverity } from '../../shared/models/alert.model';
+import { PredictionStatus, SitePredictionSummary } from '../../shared/models/prediction.model';
+import { Card } from '../../shared/components/ui/card/card';
+import { Alert as EvAlert } from '../../shared/components/ui/alert/alert';
+import { Badge, BadgeTone } from '../../shared/components/ui/badge/badge';
+import { Brand } from '../../shared/components/ui/brand/brand';
+import { Button } from '../../shared/components/ui/button/button';
 
 const REFRESH_INTERVAL_MS = 10000;
 const UNAVAILABLE_MESSAGE =
   'Données indisponibles, les valeurs affichées datent du dernier relevé.';
 
+const TON_PAR_SEVERITE: Record<AlertSeverity, BadgeTone> = {
+  low: 'success',
+  medium: 'warning',
+  high: 'danger',
+  critical: 'critical',
+};
+
+// `error` n'a pas de précédent dans les fixtures ou l'API à ce jour, mais figure dans le
+// domaine du schéma backend (`ck_prediction_status`) : mieux vaut une couleur définie que
+// tomber sur `undefined` si ce statut apparaît un jour.
+const TON_PAR_STATUT_PREDICTION: Record<PredictionStatus, BadgeTone> = {
+  available: 'success',
+  insufficient_data: 'warning',
+  error: 'danger',
+};
+
 @Component({
   selector: 'app-dashboard',
   standalone: true,
-  imports: [DecimalPipe, ConsumptionGauge, SiteLoadChart],
+  imports: [
+    DecimalPipe,
+    DatePipe,
+    RouterLink,
+    ConsumptionGauge,
+    SiteLoadChart,
+    Card,
+    EvAlert,
+    Badge,
+    Brand,
+    Button,
+  ],
   templateUrl: './dashboard.html',
   styleUrl: './dashboard.scss',
 })
 export class Dashboard implements OnInit {
   private statsService = inject(StatsService);
   private alertsService = inject(AlertsService);
+  private predictionsService = inject(PredictionsService);
   private auth = inject(AuthService);
   private router = inject(Router);
   private destroyRef = inject(DestroyRef);
 
   stats = signal<StatsSummary | null>(null);
   alerts = signal<Alert[]>([]);
-  error = signal<string | null>(null);
+  predictions = signal<SitePredictionSummary[]>([]);
+
+  // Un signal par flux, pas un seul `error` partagé : sinon le tick suivant de `timer` (stats)
+  // efface silencieusement un message d'échec des prévisions ou des alertes après 10s au plus,
+  // sans retry ni indication pour l'utilisateur que la section correspondante est restée vide.
+  statsError = signal<string | null>(null);
+  alertsError = signal<string | null>(null);
+  predictionsError = signal<string | null>(null);
 
   ngOnInit(): void {
     this.alertsService
       .getAlerts()
-      .pipe(catchError(() => this.reportUnavailable()))
+      .pipe(catchError(() => this.reportUnavailable(this.alertsError)))
-      .subscribe((alerts) => this.alerts.set(alerts));
+      .subscribe((alerts) => {
+        this.alertsError.set(null);
+        this.alerts.set(alerts);
+      });
+
+    // Les prévisions viennent d'un scoring hors ligne, pas d'un calcul à la demande : un seul
+    // chargement au démarrage suffit, pas besoin du rafraîchissement périodique de `stats`.
+    this.predictionsService
+      .getPredictions()
+      .pipe(catchError(() => this.reportUnavailable(this.predictionsError)))
+      .subscribe((summary) => {
+        this.predictionsError.set(null);
+        this.predictions.set(summary.sites);
+      });
 
     // Piège : le catchError porte sur l'observable interne. Sur le flux externe il
     // terminerait le timer, et le rafraîchissement ne repartirait jamais.
     timer(0, REFRESH_INTERVAL_MS)
       .pipe(
         switchMap(() =>
-          this.statsService.getSummary().pipe(catchError(() => this.reportUnavailable())),
+          this.statsService.getSummary().pipe(catchError(() => this.reportUnavailable(this.statsError))),
         ),
         takeUntilDestroyed(this.destroyRef),
       )
       .subscribe((stats) => {
-        this.error.set(null);
+        this.statsError.set(null);
         this.stats.set(stats);
       });
   }
 
+  badgeToneForSeverity(severity: AlertSeverity): BadgeTone {
+    return TON_PAR_SEVERITE[severity];
+  }
+
+  badgeToneForPredictionStatus(status: PredictionStatus): BadgeTone {
+    return TON_PAR_STATUT_PREDICTION[status];
+  }
+
   onLogout(): void {
     this.auth.logout().subscribe({
       next: () => this.router.navigate(['/login']),
@@ -65,8 +128,8 @@ export class Dashboard implements OnInit {
     });
   }
 
-  private reportUnavailable(): Observable<never> {
+  private reportUnavailable(target: WritableSignal<string | null>): Observable<never> {
-    this.error.set(UNAVAILABLE_MESSAGE);
+    target.set(UNAVAILABLE_MESSAGE);
     return EMPTY;
   }
 }

apps/frontend/src/app/features/sites/site-detail/site-detail.html

@@ -0,0 +1,85 @@
+<div class="site-detail">
+  <nav class="ev-breadcrumb">
+    <a routerLink="/dashboard">Tableau de bord</a>
+    <span>/</span>
+    <a routerLink="/sites">Sites</a>
+  </nav>
+
+  <header class="site-detail__header">
+    <a routerLink="/dashboard" class="ev-brand-link">
+      <ev-brand class="site-detail__logo" />
+    </a>
+    <div>
+      <h1>{{ site()?.site_name ?? siteId() }}</h1>
+      @if (site(); as s) {
+        <p class="site-detail__subtitle">
+          {{ s.site_type }} · {{ s.location || 'Localisation inconnue' }}
+        </p>
+      }
+    </div>
+    <div class="site-detail__badges">
+      @if (site(); as s) {
+        <ev-badge [tone]="badgeToneForStatus(s.status)">{{ s.status ?? '-' }}</ev-badge>
+      }
+      @if (hasMeasurement() && qualityLabel(); as label) {
+        <ev-badge [tone]="qualityTone()">{{ label }}</ev-badge>
+      }
+    </div>
+  </header>
+
+  @if (error(); as message) {
+    <ev-alert severity="danger" class="banner-error">{{ message }}</ev-alert>
+  }
+
+  @if (site(); as s) {
+    @if (hasMeasurement()) {
+      <section class="overview">
+        <ev-card class="card card--gauge">
+          <span class="card__label">Consommation vs capacité</span>
+          @let consumption = consumptionKw();
+          @if (consumption !== null) {
+            <app-consumption-gauge [consumption]="consumption" [capacity]="s.capacity_kw ?? 0" />
+            <span class="card__value">
+              {{ consumptionLabel() }} / {{ s.capacity_kw ?? '-' }} kW
+            </span>
+          } @else {
+            <p class="card__unavailable">
+              Consommation indisponible
+              <span class="metric__reason">({{ consumptionReason() }})</span>
+            </p>
+          }
+        </ev-card>
+
+        <ev-card class="metrics-card">
+          <span class="card__label">Mesure instantanée</span>
+          <dl class="metrics-grid">
+            @for (metric of metrics(); track metric.key) {
+              <div class="metric">
+                <dt>{{ metric.label }}</dt>
+                @if (metric.value !== null) {
+                  <dd>{{ metric.value }}</dd>
+                } @else {
+                  <dd class="metric__unavailable">
+                    Indisponible
+                    <span class="metric__reason">({{ metric.reason }})</span>
+                  </dd>
+                }
+              </div>
+            }
+          </dl>
+        </ev-card>
+      </section>
+
+      @if (history().length > 0) {
+        <section class="chart-section">
+          <h2>Historique de consommation</h2>
+          <app-reading-history-chart [readings]="history()" />
+        </section>
+      }
+    } @else {
+      <ev-alert severity="warning" class="banner-empty">{{ noMeasurementMessage }}</ev-alert>
+    }
+  }
+
+  <a routerLink="/sites" class="ev-link">Retour aux sites</a>
+</div>

apps/frontend/src/app/features/sites/site-detail/site-detail.scss

@@ -0,0 +1,119 @@
+:host {
+  display: block;
+  color: var(--color-text);
+  padding: 2.5rem 2rem;
+  max-width: 1100px;
+  margin: 0 auto;
+}
+
+.site-detail__header {
+  display: flex;
+  align-items: center;
+  gap: 0.85rem;
+  margin-bottom: 2rem;
+
+  h1 {
+    margin: 0;
+    font-size: 1.75rem;
+    font-weight: 700;
+  }
+}
+
+.site-detail__logo {
+  font-size: 1.3rem;
+}
+
+.site-detail__subtitle {
+  margin: 0.25rem 0 0;
+  color: var(--color-text-muted);
+}
+
+.site-detail__badges {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  margin-left: auto;
+}
+
+.banner-error {
+  display: block;
+  margin: 0 0 1.5rem;
+}
+
+.banner-empty {
+  display: block;
+  margin: 0 0 1.5rem;
+}
+
+.overview {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
+  gap: 1rem;
+  margin-bottom: 2.5rem;
+}
+
+.card {
+  padding: 1.25rem;
+  gap: 0.35rem;
+}
+
+.card--gauge {
+  align-items: center;
+  text-align: center;
+}
+
+.card__label {
+  font-size: 0.8rem;
+  color: var(--color-text-muted);
+  text-transform: uppercase;
+  letter-spacing: 0.02em;
+}
+
+.card__value {
+  font-size: 1.6rem;
+  font-weight: 700;
+}
+
+.card__unavailable {
+  color: var(--color-text-muted);
+  margin: 0;
+}
+
+.metrics-grid {
+  display: grid;
+  grid-template-columns: repeat(2, 1fr);
+  gap: 0.75rem 1.5rem;
+  margin: 0.5rem 0 0;
+}
+
+.metric {
+  dt {
+    font-size: 0.75rem;
+    color: var(--color-text-muted);
+  }
+
+  dd {
+    margin: 0;
+    font-size: 1.05rem;
+    font-weight: 600;
+  }
+}
+
+.metric__unavailable {
+  color: var(--color-text-muted);
+  font-weight: 400;
+}
+
+.metric__reason {
+  font-size: 0.8rem;
+}
+
+h2 {
+  font-size: 1.1rem;
+  font-weight: 600;
+  margin: 0 0 1rem;
+}
+
+.chart-section {
+  margin-bottom: 2rem;
+}

apps/frontend/src/app/features/sites/site-detail/site-detail.spec.ts

@@ -0,0 +1,281 @@
+import { TestBed } from '@angular/core/testing';
+import { ActivatedRoute, convertToParamMap, provideRouter } from '@angular/router';
+import { vi } from 'vitest';
+import { BehaviorSubject, of, throwError } from 'rxjs';
+import { SiteDetail } from './site-detail';
+import { SitesService } from '../../../core/services/sites.service';
+import { ReadingsService } from '../../../core/services/readings.service';
+
+const SITE = {
+  site_id: 'SITE001',
+  site_name: 'Site 1',
+  site_type: 'industriel',
+  location: 'Nantes',
+  capacity_kw: 500,
+  status: 'actif',
+};
+
+const CURRENT_COMPLET = {
+  timestamp: '2026-09-17T10:00:00Z',
+  site_id: 'SITE001',
+  site_type: 'industriel',
+  consumption_kw: 120,
+  consumption_kwh: null,
+  voltage_v: 230,
+  current_a: 12,
+  power_factor: 0.95,
+  temperature_celsius: 22,
+  humidity_percent: 55,
+  null_reasons: [] as string[],
+  data_quality: 'good' as const,
+};
+
+const SANS_MESURE = {
+  ...CURRENT_COMPLET,
+  timestamp: null,
+  consumption_kw: null,
+  voltage_v: null,
+  current_a: null,
+  power_factor: null,
+  temperature_celsius: null,
+  humidity_percent: null,
+  data_quality: 'critical' as const,
+};
+
+const LECTURE = {
+  reading_id: 1,
+  site_id: 'SITE001',
+  timestamp: '2026-09-17T09:00:00Z',
+  source: 'api_history' as const,
+  consumption_kw: 118,
+  consumption_kwh: null,
+  consumption_euros: null,
+  voltage_v: 230,
+  current_a: 12,
+  power_factor: 0.95,
+  temperature_celsius: 22,
+  humidity_percent: 55,
+  solar_irradiance_wm2: null,
+  is_working_hours: true,
+  data_quality: 'good' as const,
+  null_reasons: null,
+  imputed_values: null,
+  imputation_method: null,
+};
+
+function setup(
+  siteId: string,
+  sitesMock: Partial<SitesService>,
+  readingsMock: Partial<ReadingsService>,
+) {
+  const paramMap = new BehaviorSubject(convertToParamMap({ siteId }));
+  TestBed.configureTestingModule({
+    imports: [SiteDetail],
+    providers: [
+      provideRouter([]),
+      { provide: ActivatedRoute, useValue: { paramMap } },
+      { provide: SitesService, useValue: sitesMock },
+      { provide: ReadingsService, useValue: readingsMock },
+    ],
+  });
+  return { fixture: TestBed.createComponent(SiteDetail), paramMap };
+}
+
+describe('SiteDetail', () => {
+  it('charge le site, la mesure courante et son historique au démarrage', () => {
+    const { fixture } = setup(
+      'SITE001',
+      {
+        getSite: vi.fn().mockReturnValue(of(SITE)),
+        getCurrent: vi.fn().mockReturnValue(of(CURRENT_COMPLET)),
+      },
+      { getHistory: vi.fn().mockReturnValue(of([LECTURE])) },
+    );
+
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.site()?.site_id).toBe('SITE001');
+    expect(fixture.componentInstance.current()?.consumption_kw).toBe(120);
+    expect(fixture.componentInstance.history().length).toBe(1);
+    expect(fixture.componentInstance.error()).toBeNull();
+  });
+
+  it("signale l'indisponibilité quand un des appels échoue", () => {
+    const { fixture } = setup(
+      'SITE001',
+      {
+        getSite: vi.fn().mockReturnValue(throwError(() => new Error('nope'))),
+        getCurrent: vi.fn().mockReturnValue(of(CURRENT_COMPLET)),
+      },
+      { getHistory: vi.fn().mockReturnValue(of([])) },
+    );
+
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.error()).not.toBeNull();
+    expect(fixture.componentInstance.site()).toBeNull();
+  });
+
+  it('efface les données du site précédent quand le chargement du suivant échoue', () => {
+    const getSite = vi
+      .fn()
+      .mockReturnValueOnce(of(SITE))
+      .mockReturnValueOnce(throwError(() => new Error('404')));
+    const { fixture, paramMap } = setup(
+      'SITE001',
+      { getSite, getCurrent: vi.fn().mockReturnValue(of(CURRENT_COMPLET)) },
+      { getHistory: vi.fn().mockReturnValue(of([LECTURE])) },
+    );
+
+    fixture.detectChanges();
+    expect(fixture.componentInstance.site()?.site_id).toBe('SITE001');
+
+    paramMap.next(convertToParamMap({ siteId: 'SITE002' }));
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.error()).not.toBeNull();
+    expect(fixture.componentInstance.site()).toBeNull();
+    expect(fixture.componentInstance.current()).toBeNull();
+    expect(fixture.componentInstance.history()).toEqual([]);
+    expect(fixture.nativeElement.textContent).not.toContain('Site 1');
+  });
+
+  it('interroge le site et sa mesure courante en parallèle', () => {
+    const getSite = vi.fn().mockReturnValue(of(SITE));
+    const getCurrent = vi.fn().mockReturnValue(of(CURRENT_COMPLET));
+    const { fixture } = setup(
+      'SITE001',
+      { getSite, getCurrent },
+      { getHistory: vi.fn().mockReturnValue(of([])) },
+    );
+
+    fixture.detectChanges();
+
+    expect(getSite).toHaveBeenCalledWith('SITE001');
+    expect(getCurrent).toHaveBeenCalledWith('SITE001');
+  });
+
+  it('signale la panne du capteur de consommation au lieu de tracer une jauge à zéro', () => {
+    const sansConsommation = {
+      ...CURRENT_COMPLET,
+      consumption_kw: null,
+      null_reasons: ['consumption_sensor_failure'],
+      data_quality: 'partial' as const,
+    };
+    const { fixture } = setup(
+      'SITE001',
+      {
+        getSite: vi.fn().mockReturnValue(of(SITE)),
+        getCurrent: vi.fn().mockReturnValue(of(sansConsommation)),
+      },
+      { getHistory: vi.fn().mockReturnValue(of([LECTURE])) },
+    );
+
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.consumptionKw()).toBeNull();
+    expect(fixture.componentInstance.consumptionReason()).toBe('capteur de consommation en panne');
+    expect(fixture.nativeElement.querySelector('app-consumption-gauge')).toBeNull();
+    expect(fixture.nativeElement.textContent).toContain('Consommation indisponible');
+  });
+
+  it('trace la jauge pour une consommation nulle réellement mesurée', () => {
+    const { fixture } = setup(
+      'SITE001',
+      {
+        getSite: vi.fn().mockReturnValue(of(SITE)),
+        getCurrent: vi.fn().mockReturnValue(of({ ...CURRENT_COMPLET, consumption_kw: 0 })),
+      },
+      { getHistory: vi.fn().mockReturnValue(of([LECTURE])) },
+    );
+
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.consumptionLabel()).toBe('0.0 kW');
+    expect(fixture.nativeElement.querySelector('app-consumption-gauge')).not.toBeNull();
+    expect(fixture.nativeElement.textContent).not.toContain('Consommation indisponible');
+  });
+
+  it('affiche explicitement les champs null avec leur raison plutôt que de les masquer', () => {
+    const partielle = {
+      ...CURRENT_COMPLET,
+      voltage_v: null,
+      current_a: null,
+      power_factor: null,
+      null_reasons: ['electrical_sensor_failure'],
+      data_quality: 'partial' as const,
+    };
+    const { fixture } = setup(
+      'SITE001',
+      {
+        getSite: vi.fn().mockReturnValue(of(SITE)),
+        getCurrent: vi.fn().mockReturnValue(of(partielle)),
+      },
+      { getHistory: vi.fn().mockReturnValue(of([LECTURE])) },
+    );
+
+    fixture.detectChanges();
+
+    const tension = fixture.componentInstance.metrics().find((m) => m.key === 'voltage_v');
+    expect(tension?.value).toBeNull();
+    expect(tension?.reason).toBe('capteur électrique en panne');
+
+    const texte = fixture.nativeElement.textContent;
+    expect(texte).toContain('Indisponible');
+    expect(texte).toContain('capteur électrique en panne');
+    expect(texte).toContain('Données partielles');
+  });
+
+  it('recharge les données quand le paramètre de route siteId change', () => {
+    const getSite = vi.fn().mockReturnValue(of(SITE));
+    const { fixture, paramMap } = setup(
+      'SITE001',
+      { getSite, getCurrent: vi.fn().mockReturnValue(of(CURRENT_COMPLET)) },
+      { getHistory: vi.fn().mockReturnValue(of([])) },
+    );
+
+    fixture.detectChanges();
+    paramMap.next(convertToParamMap({ siteId: 'SITE002' }));
+    fixture.detectChanges();
+
+    expect(getSite).toHaveBeenCalledWith('SITE002');
+  });
+
+  it("ancre la fenêtre d'historique sur la dernière mesure connue plutôt que sur l'horloge", () => {
+    const getHistory = vi.fn().mockReturnValue(of([]));
+    const { fixture } = setup(
+      'SITE001',
+      {
+        getSite: vi.fn().mockReturnValue(of(SITE)),
+        getCurrent: vi.fn().mockReturnValue(of(CURRENT_COMPLET)),
+      },
+      { getHistory },
+    );
+
+    fixture.detectChanges();
+
+    expect(getHistory).toHaveBeenCalledWith(
+      'SITE001',
+      '2026-09-16T10:00:00.000Z',
+      '2026-09-17T10:00:00Z',
+    );
+  });
+
+  it("annonce l'absence de mesure sans interroger l'historique quand timestamp est null", () => {
+    const getHistory = vi.fn().mockReturnValue(of([]));
+    const { fixture } = setup(
+      'SITE001',
+      {
+        getSite: vi.fn().mockReturnValue(of(SITE)),
+        getCurrent: vi.fn().mockReturnValue(of(SANS_MESURE)),
+      },
+      { getHistory },
+    );
+
+    fixture.detectChanges();
+
+    expect(getHistory).not.toHaveBeenCalled();
+    expect(fixture.componentInstance.hasMeasurement()).toBe(false);
+    expect(fixture.nativeElement.textContent).toContain('Aucune mesure remontée pour ce site.');
+  });
+});

apps/frontend/src/app/features/sites/site-detail/site-detail.ts

@@ -0,0 +1,213 @@
+import { Component, DestroyRef, computed, inject, signal } from '@angular/core';
+import { takeUntilDestroyed, toObservable, toSignal } from '@angular/core/rxjs-interop';
+import { ActivatedRoute, RouterLink } from '@angular/router';
+import { catchError, EMPTY, filter, forkJoin, map, Observable, of, switchMap } from 'rxjs';
+import { SitesService } from '../../../core/services/sites.service';
+import { ReadingsService } from '../../../core/services/readings.service';
+import { Site } from '../../../shared/models/site.model';
+import { Reading, ReadingDataQuality } from '../../../shared/models/reading.model';
+import { SiteCurrent } from '../../../shared/models/site-current.model';
+import { Card } from '../../../shared/components/ui/card/card';
+import { Alert } from '../../../shared/components/ui/alert/alert';
+import { Badge, BadgeTone } from '../../../shared/components/ui/badge/badge';
+import { Brand } from '../../../shared/components/ui/brand/brand';
+import { ConsumptionGauge } from '../../../shared/components/consumption-gauge/consumption-gauge';
+import { ReadingHistoryChart } from '../../../shared/components/reading-history-chart/reading-history-chart';
+
+const UNAVAILABLE_MESSAGE = 'Détail du site indisponible, réessayez plus tard.';
+const NO_MEASUREMENT_MESSAGE = 'Aucune mesure remontée pour ce site.';
+const HISTORY_WINDOW_MS = 24 * 60 * 60 * 1000;
+
+const TON_PAR_STATUT: Record<string, BadgeTone> = {
+  actif: 'success',
+  maintenance: 'warning',
+  hors_service: 'danger',
+};
+
+const TON_PAR_QUALITE: Record<ReadingDataQuality, BadgeTone> = {
+  good: 'success',
+  partial: 'warning',
+  degraded: 'danger',
+  critical: 'critical',
+};
+
+const LIBELLE_PAR_QUALITE: Record<ReadingDataQuality, string> = {
+  good: 'Données complètes',
+  partial: 'Données partielles',
+  degraded: 'Données dégradées',
+  critical: 'Données critiques',
+};
+
+type MetricKey =
+  | 'consumption_kw'
+  | 'voltage_v'
+  | 'current_a'
+  | 'power_factor'
+  | 'temperature_celsius'
+  | 'humidity_percent';
+
+interface MetricDef {
+  key: MetricKey;
+  label: string;
+  format: (value: number) => string;
+}
+
+const CONSUMPTION_DEF: MetricDef = {
+  key: 'consumption_kw',
+  label: 'Consommation',
+  format: (v) => `${v.toFixed(1)} kW`,
+};
+
+const METRIC_DEFS: MetricDef[] = [
+  CONSUMPTION_DEF,
+  { key: 'voltage_v', label: 'Tension', format: (v) => `${v.toFixed(1)} V` },
+  { key: 'current_a', label: 'Courant', format: (v) => `${v.toFixed(1)} A` },
+  { key: 'power_factor', label: 'Cos φ', format: (v) => v.toFixed(2) },
+  { key: 'temperature_celsius', label: 'Température', format: (v) => `${v.toFixed(1)} °C` },
+  { key: 'humidity_percent', label: 'Humidité', format: (v) => `${v.toFixed(0)} %` },
+];
+
+// Contrainte : miroir de RAISON_VERS_CAPTEUR et CHAMPS_PAR_CAPTEUR (backend, services/sensor.py) ;
+// `null_reasons` porte le code de panne du capteur, jamais le nom du champ resté vide.
+const RAISONS_PAR_CHAMP: Record<MetricKey, string[]> = {
+  consumption_kw: ['consumption_sensor_failure', 'network_loss'],
+  voltage_v: ['electrical_sensor_failure', 'network_loss'],
+  current_a: ['electrical_sensor_failure', 'network_loss'],
+  power_factor: ['electrical_sensor_failure', 'network_loss'],
+  temperature_celsius: ['temperature_sensor_failure', 'network_loss'],
+  humidity_percent: ['humidity_sensor_failure', 'network_loss'],
+};
+
+const LIBELLE_PAR_RAISON: Record<string, string> = {
+  consumption_sensor_failure: 'capteur de consommation en panne',
+  electrical_sensor_failure: 'capteur électrique en panne',
+  temperature_sensor_failure: 'capteur de température en panne',
+  humidity_sensor_failure: "capteur d'humidité en panne",
+  network_loss: 'perte réseau',
+};
+
+export interface MetricView {
+  key: MetricKey;
+  label: string;
+  value: string | null;
+  reason: string;
+}
+
+@Component({
+  selector: 'app-site-detail',
+  standalone: true,
+  imports: [RouterLink, Card, Alert, Badge, Brand, ConsumptionGauge, ReadingHistoryChart],
+  templateUrl: './site-detail.html',
+  styleUrl: './site-detail.scss',
+})
+export class SiteDetail {
+  private route = inject(ActivatedRoute);
+  private sitesService = inject(SitesService);
+  private readingsService = inject(ReadingsService);
+  private destroyRef = inject(DestroyRef);
+
+  readonly noMeasurementMessage = NO_MEASUREMENT_MESSAGE;
+
+  siteId = toSignal(this.route.paramMap.pipe(map((params) => params.get('siteId') ?? '')));
+
+  site = signal<Site | null>(null);
+  current = signal<SiteCurrent | null>(null);
+  history = signal<Reading[]>([]);
+  error = signal<string | null>(null);
+
+  hasMeasurement = computed(() => this.current()?.timestamp != null);
+
+  consumptionKw = computed(() => this.current()?.consumption_kw ?? null);
+
+  consumptionLabel = computed(() => {
+    const kw = this.consumptionKw();
+    return kw != null ? CONSUMPTION_DEF.format(kw) : null;
+  });
+
+  consumptionReason = computed(() => this.reasonFor('consumption_kw', this.current()));
+
+  qualityLabel = computed(() => {
+    const quality = this.current()?.data_quality;
+    return quality ? LIBELLE_PAR_QUALITE[quality] : null;
+  });
+
+  qualityTone = computed<BadgeTone>(() => {
+    const quality = this.current()?.data_quality;
+    return quality ? TON_PAR_QUALITE[quality] : 'neutral';
+  });
+
+  metrics = computed<MetricView[]>(() => {
+    const current = this.current();
+    return METRIC_DEFS.map((def) => {
+      const valeur = current ? current[def.key] : null;
+      return {
+        key: def.key,
+        label: def.label,
+        value: valeur != null ? def.format(valeur) : null,
+        reason: valeur == null ? this.reasonFor(def.key, current) : '',
+      };
+    });
+  });
+
+  constructor() {
+    toObservable(this.siteId)
+      .pipe(
+        filter((siteId): siteId is string => !!siteId),
+        // Piège : switchMap sur le flux externe annule le chargement en cours dès qu'un
+        // nouveau siteId arrive, sinon une réponse en retard peut écraser le site affiché.
+        switchMap((siteId) => this.load(siteId)),
+        takeUntilDestroyed(this.destroyRef),
+      )
+      .subscribe((result) => {
+        this.error.set(null);
+        this.site.set(result.site);
+        this.current.set(result.current);
+        this.history.set(result.history);
+      });
+  }
+
+  badgeToneForStatus(status: string | null): BadgeTone {
+    return status ? (TON_PAR_STATUT[status] ?? 'neutral') : 'neutral';
+  }
+
+  private load(siteId: string) {
+    return forkJoin({
+      site: this.sitesService.getSite(siteId),
+      current: this.sitesService.getCurrent(siteId),
+    }).pipe(
+      switchMap(({ site, current }) =>
+        this.loadHistory(siteId, current).pipe(map((history) => ({ site, current, history }))),
+      ),
+      catchError(() => this.reportUnavailable()),
+    );
+  }
+
+  private loadHistory(siteId: string, current: SiteCurrent): Observable<Reading[]> {
+    // Piège : le jeu de données s'arrête bien avant « maintenant » ; ancrer la fenêtre sur la
+    // dernière mesure connue plutôt que sur l'horloge évite un historique systématiquement vide.
+    const end = current.timestamp;
+    if (end === null) {
+      return of([]);
+    }
+    const start = new Date(new Date(end).getTime() - HISTORY_WINDOW_MS).toISOString();
+    return this.readingsService.getHistory(siteId, start, end);
+  }
+
+  private reasonFor(field: MetricKey, current: SiteCurrent | null): string {
+    const raisons = RAISONS_PAR_CHAMP[field];
+    const trouvees = (current?.null_reasons ?? [])
+      .filter((raison) => raisons.includes(raison))
+      .map((raison) => LIBELLE_PAR_RAISON[raison] ?? raison);
+    return trouvees.length > 0 ? trouvees.join(', ') : 'cause inconnue';
+  }
+
+  // Piège : vider les signaux avec l'erreur, sinon la page garde le site précédemment chargé
+  // sous le bandeau et laisse lire les chiffres de A en croyant regarder B.
+  private reportUnavailable(): Observable<never> {
+    this.error.set(UNAVAILABLE_MESSAGE);
+    this.site.set(null);
+    this.current.set(null);
+    this.history.set([]);
+    return EMPTY;
+  }
+}

apps/frontend/src/app/features/sites/site-list/site-list.html

@@ -0,0 +1,46 @@
+<div class="site-list">
+  <nav class="ev-breadcrumb">
+    <a routerLink="/dashboard">Tableau de bord</a>
+  </nav>
+
+  <header class="site-list__header">
+    <a routerLink="/dashboard" class="ev-brand-link">
+      <ev-brand class="site-list__logo" />
+    </a>
+    <div>
+      <h1>Sites</h1>
+      <p class="site-list__subtitle">Vue d'ensemble du parc suivi</p>
+    </div>
+  </header>
+
+  @if (error(); as message) {
+    <ev-alert severity="danger" class="banner-error">{{ message }}</ev-alert>
+  }
+
+  <ev-card class="table-card">
+    <table class="sites-table">
+      <thead>
+        <tr>
+          <th>Nom</th>
+          <th>Type</th>
+          <th>Localisation</th>
+          <th>Capacité (kW)</th>
+          <th>Statut</th>
+          <th></th>
+        </tr>
+      </thead>
+      <tbody>
+        @for (site of sites(); track site.site_id) {
+          <tr>
+            <td>{{ site.site_name }}</td>
+            <td>{{ site.site_type }}</td>
+            <td>{{ site.location || '-' }}</td>
+            <td>{{ site.capacity_kw ?? '-' }}</td>
+            <td><ev-badge [tone]="badgeToneForStatus(site.status)">{{ site.status ?? '-' }}</ev-badge></td>
+            <td><a [routerLink]="['/sites', site.site_id]" class="ev-link">Détail</a></td>
+          </tr>
+        }
+      </tbody>
+    </table>
+  </ev-card>
+</div>

apps/frontend/src/app/features/sites/site-list/site-list.scss

@@ -0,0 +1,63 @@
+:host {
+  display: block;
+  color: var(--color-text);
+  padding: 2.5rem 2rem;
+  max-width: 1100px;
+  margin: 0 auto;
+}
+
+.site-list__header {
+  display: flex;
+  align-items: center;
+  gap: 0.85rem;
+  margin-bottom: 2rem;
+
+  h1 {
+    margin: 0;
+    font-size: 1.75rem;
+    font-weight: 700;
+  }
+}
+
+.site-list__logo {
+  font-size: 1.3rem;
+}
+
+.site-list__subtitle {
+  margin: 0.25rem 0 0;
+  color: var(--color-text-muted);
+}
+
+.banner-error {
+  display: block;
+  margin: 0 0 1.5rem;
+}
+
+.table-card {
+  padding: 0;
+  overflow: hidden;
+}
+
+.sites-table {
+  width: 100%;
+  border-collapse: collapse;
+
+  th,
+  td {
+    padding: 0.85rem 1.25rem;
+    text-align: left;
+    border-bottom: 1px solid var(--color-border-light);
+  }
+
+  th {
+    font-size: 0.8rem;
+    color: var(--color-text-muted);
+    text-transform: uppercase;
+    letter-spacing: 0.02em;
+    font-weight: 600;
+  }
+
+  tr:last-child td {
+    border-bottom: none;
+  }
+}

apps/frontend/src/app/features/sites/site-list/site-list.spec.ts

@@ -0,0 +1,81 @@
+import { TestBed } from '@angular/core/testing';
+import { provideRouter } from '@angular/router';
+import { vi } from 'vitest';
+import { of, throwError } from 'rxjs';
+import { SiteList } from './site-list';
+import { SitesService } from '../../../core/services/sites.service';
+
+describe('SiteList', () => {
+  it('charge et affiche les sites au démarrage', () => {
+    const sitesMock = {
+      getSites: vi.fn().mockReturnValue(
+        of([
+          {
+            site_id: 'SITE001',
+            site_name: 'Site 1',
+            site_type: 'industriel',
+            location: 'Nantes',
+            capacity_kw: 500,
+            status: 'actif',
+          },
+        ]),
+      ),
+    };
+
+    TestBed.configureTestingModule({
+      imports: [SiteList],
+      providers: [{ provide: SitesService, useValue: sitesMock }, provideRouter([])],
+    });
+
+    const fixture = TestBed.createComponent(SiteList);
+    fixture.detectChanges();
+
+    expect(sitesMock.getSites).toHaveBeenCalled();
+    expect(fixture.componentInstance.sites().length).toBe(1);
+    expect(fixture.componentInstance.error()).toBeNull();
+  });
+
+  it("signale l'indisponibilité quand le chargement échoue", () => {
+    const sitesMock = { getSites: vi.fn().mockReturnValue(throwError(() => new Error('nope'))) };
+
+    TestBed.configureTestingModule({
+      imports: [SiteList],
+      providers: [{ provide: SitesService, useValue: sitesMock }, provideRouter([])],
+    });
+
+    const fixture = TestBed.createComponent(SiteList);
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.error()).not.toBeNull();
+    expect(fixture.componentInstance.sites().length).toBe(0);
+  });
+
+  it('affiche un tiret pour les champs nullables', () => {
+    const sitesMock = {
+      getSites: vi.fn().mockReturnValue(
+        of([
+          {
+            site_id: 'SITE002',
+            site_name: 'Site 2',
+            site_type: 'bureau',
+            location: null,
+            capacity_kw: null,
+            status: null,
+          },
+        ]),
+      ),
+    };
+
+    TestBed.configureTestingModule({
+      imports: [SiteList],
+      providers: [{ provide: SitesService, useValue: sitesMock }, provideRouter([])],
+    });
+
+    const fixture = TestBed.createComponent(SiteList);
+    fixture.detectChanges();
+
+    const cells = fixture.nativeElement.querySelectorAll('td');
+    expect(cells[2].textContent.trim()).toBe('-');
+    expect(cells[3].textContent.trim()).toBe('-');
+  });
+});

apps/frontend/src/app/features/sites/site-list/site-list.ts

@@ -0,0 +1,47 @@
+import { Component, OnInit, inject, signal } from '@angular/core';
+import { RouterLink } from '@angular/router';
+import { catchError, EMPTY, Observable } from 'rxjs';
+import { SitesService } from '../../../core/services/sites.service';
+import { Site } from '../../../shared/models/site.model';
+import { Card } from '../../../shared/components/ui/card/card';
+import { Alert } from '../../../shared/components/ui/alert/alert';
+import { Badge, BadgeTone } from '../../../shared/components/ui/badge/badge';
+import { Brand } from '../../../shared/components/ui/brand/brand';
+
+const UNAVAILABLE_MESSAGE = 'Liste des sites indisponible, réessayez plus tard.';
+
+const TON_PAR_STATUT: Record<string, BadgeTone> = {
+  actif: 'success',
+  maintenance: 'warning',
+  hors_service: 'danger',
+};
+
+@Component({
+  selector: 'app-site-list',
+  standalone: true,
+  imports: [RouterLink, Card, Alert, Badge, Brand],
+  templateUrl: './site-list.html',
+  styleUrl: './site-list.scss',
+})
+export class SiteList implements OnInit {
+  private sitesService = inject(SitesService);
+
+  sites = signal<Site[]>([]);
+  error = signal<string | null>(null);
+
+  ngOnInit(): void {
+    this.sitesService
+      .getSites()
+      .pipe(catchError(() => this.reportUnavailable()))
+      .subscribe((sites) => this.sites.set(sites));
+  }
+
+  badgeToneForStatus(status: string | null): BadgeTone {
+    return status ? (TON_PAR_STATUT[status] ?? 'neutral') : 'neutral';
+  }
+
+  private reportUnavailable(): Observable<never> {
+    this.error.set(UNAVAILABLE_MESSAGE);
+    return EMPTY;
+  }
+}

apps/frontend/src/app/shared/components/reading-history-chart/reading-history-chart.html

@@ -0,0 +1 @@
+<canvas #canvas></canvas>

apps/frontend/src/app/shared/components/reading-history-chart/reading-history-chart.scss

@@ -0,0 +1,4 @@
+:host {
+  display: block;
+  height: 260px;
+}

apps/frontend/src/app/shared/components/reading-history-chart/reading-history-chart.spec.ts

@@ -0,0 +1,101 @@
+import { TestBed } from '@angular/core/testing';
+import { vi } from 'vitest';
+import { Chart } from 'chart.js';
+import { ReadingHistoryChart } from './reading-history-chart';
+
+vi.mock('chart.js', () => {
+  class ChartMock {
+    static instances: ChartMock[] = [];
+    static register = vi.fn();
+    update = vi.fn();
+    destroy = vi.fn();
+    data: { labels?: unknown[]; datasets: Record<string, unknown>[] } = { datasets: [{}] };
+    constructor(_canvas: unknown, config?: { data?: ChartMock['data'] }) {
+      if (config?.data) {
+        this.data = config.data;
+      }
+      ChartMock.instances.push(this);
+    }
+  }
+  return { Chart: ChartMock, registerables: [] };
+});
+
+type ChartDouble = {
+  destroy: ReturnType<typeof vi.fn>;
+  data: { labels?: unknown[]; datasets: Record<string, unknown>[] };
+};
+
+function lastChart(): ChartDouble | undefined {
+  return (Chart as unknown as { instances: ChartDouble[] }).instances.at(-1);
+}
+
+const READING = {
+  reading_id: 1,
+  site_id: 'S1',
+  timestamp: '2026-09-17T10:00:00Z',
+  source: 'api_history' as const,
+  consumption_kw: 42,
+  consumption_kwh: null,
+  consumption_euros: null,
+  voltage_v: null,
+  current_a: null,
+  power_factor: null,
+  temperature_celsius: null,
+  humidity_percent: null,
+  solar_irradiance_wm2: null,
+  is_working_hours: null,
+  data_quality: 'good' as const,
+  null_reasons: null,
+  imputed_values: null,
+  imputation_method: null,
+};
+
+describe('ReadingHistoryChart', () => {
+  it('se crée sans erreur avec une liste de lectures valide', () => {
+    TestBed.configureTestingModule({ imports: [ReadingHistoryChart] });
+    const fixture = TestBed.createComponent(ReadingHistoryChart);
+    fixture.componentRef.setInput('readings', [READING]);
+    expect(() => fixture.detectChanges()).not.toThrow();
+  });
+
+  it('met à jour le graphique quand les lectures changent après initialisation', () => {
+    TestBed.configureTestingModule({ imports: [ReadingHistoryChart] });
+    const fixture = TestBed.createComponent(ReadingHistoryChart);
+    fixture.componentRef.setInput('readings', [READING]);
+    fixture.detectChanges();
+
+    fixture.componentRef.setInput('readings', [
+      { ...READING, reading_id: 2, consumption_kw: 60, data_quality: 'critical' as const },
+    ]);
+    fixture.detectChanges();
+
+    expect(() => fixture.detectChanges()).not.toThrow();
+  });
+
+  it("trace du plus ancien au plus récent, quel que soit l'ordre reçu de l'API", () => {
+    TestBed.configureTestingModule({ imports: [ReadingHistoryChart] });
+    const fixture = TestBed.createComponent(ReadingHistoryChart);
+    // L'API trie en timestamp décroissant : le composant doit rétablir la chronologie.
+    fixture.componentRef.setInput('readings', [
+      { ...READING, reading_id: 2, timestamp: '2026-09-17T11:00:00Z', consumption_kw: 60 },
+      { ...READING, reading_id: 1, timestamp: '2026-09-17T10:00:00Z', consumption_kw: 42 },
+    ]);
+    fixture.detectChanges();
+
+    const chart = lastChart();
+    expect(chart?.data.labels).toEqual(['2026-09-17T10:00:00Z', '2026-09-17T11:00:00Z']);
+    expect(chart?.data.datasets[0]['data']).toEqual([42, 60]);
+  });
+
+  it('détruit le graphique quand le composant est détruit', () => {
+    TestBed.configureTestingModule({ imports: [ReadingHistoryChart] });
+    const fixture = TestBed.createComponent(ReadingHistoryChart);
+    fixture.componentRef.setInput('readings', [READING]);
+    fixture.detectChanges();
+
+    const chart = lastChart();
+    fixture.destroy();
+
+    expect(chart?.destroy).toHaveBeenCalledTimes(1);
+  });
+});

apps/frontend/src/app/shared/components/reading-history-chart/reading-history-chart.ts

@@ -0,0 +1,95 @@
+import {
+  Component,
+  ElementRef,
+  ViewChild,
+  input,
+  effect,
+  AfterViewInit,
+  OnDestroy,
+} from '@angular/core';
+import { Chart, registerables } from 'chart.js';
+import { Reading, ReadingDataQuality } from '../../models/reading.model';
+
+Chart.register(...registerables);
+
+const QUALITY_COLORS: Record<ReadingDataQuality, string> = {
+  good: '#3b82f6',
+  partial: '#f9a825',
+  degraded: '#ef6c00',
+  critical: '#c62828',
+};
+const UNKNOWN_QUALITY_COLOR = '#9ca3af';
+
+interface ChartSeries {
+  labels: string[];
+  values: number[];
+  colors: string[];
+}
+
+// Piège : l'API renvoie les lectures du plus récent au plus ancien (ReadingRepository.list_history
+// trie en timestamp desc) ; sans ce tri l'axe des abscisses se lirait à rebours.
+function toSeries(readings: Reading[]): ChartSeries {
+  const ordered = [...readings].sort((a, b) => Date.parse(a.timestamp) - Date.parse(b.timestamp));
+  return {
+    labels: ordered.map((r) => r.timestamp),
+    values: ordered.map((r) => r.consumption_kw ?? 0),
+    colors: ordered.map((r) =>
+      r.data_quality ? QUALITY_COLORS[r.data_quality] : UNKNOWN_QUALITY_COLOR,
+    ),
+  };
+}
+
+@Component({
+  selector: 'app-reading-history-chart',
+  standalone: true,
+  templateUrl: './reading-history-chart.html',
+  styleUrl: './reading-history-chart.scss',
+})
+export class ReadingHistoryChart implements AfterViewInit, OnDestroy {
+  readings = input.required<Reading[]>();
+
+  @ViewChild('canvas') private canvasRef!: ElementRef<HTMLCanvasElement>;
+  private chart?: Chart<'line'>;
+
+  constructor() {
+    effect(() => {
+      const series = toSeries(this.readings());
+      if (this.chart) {
+        this.chart.data.labels = series.labels;
+        this.chart.data.datasets[0].data = series.values;
+        this.chart.data.datasets[0].pointBackgroundColor = series.colors;
+        this.chart.update('none');
+      }
+    });
+  }
+
+  ngAfterViewInit(): void {
+    const series = toSeries(this.readings());
+    this.chart = new Chart(this.canvasRef.nativeElement, {
+      type: 'line',
+      data: {
+        labels: series.labels,
+        datasets: [
+          {
+            data: series.values,
+            borderColor: '#3b82f6',
+            pointBackgroundColor: series.colors,
+            tension: 0.25,
+          },
+        ],
+      },
+      options: {
+        responsive: true,
+        maintainAspectRatio: false,
+        plugins: { legend: { display: false } },
+        scales: {
+          y: { beginAtZero: true, title: { display: true, text: 'Consommation (kW)' } },
+        },
+      },
+    });
+  }
+
+  ngOnDestroy(): void {
+    this.chart?.destroy();
+  }
+}

apps/frontend/src/app/shared/components/ui/alert/alert.html

@@ -0,0 +1 @@
+<ng-content></ng-content>

apps/frontend/src/app/shared/components/ui/alert/alert.scss

@@ -0,0 +1,27 @@
+:host {
+  display: block;
+  margin: 0;
+  padding: 0.75rem 1rem;
+  border-radius: var(--radius-sm);
+  border: 1px solid transparent;
+  font-size: 0.85rem;
+  line-height: 1.4;
+}
+
+:host.ev-alert--success {
+  background: var(--color-success-bg);
+  border-color: var(--color-success);
+  color: var(--color-success);
+}
+
+:host.ev-alert--warning {
+  background: var(--color-warning-bg);
+  border-color: var(--color-warning);
+  color: var(--color-warning-text);
+}
+
+:host.ev-alert--danger {
+  background: var(--color-danger-bg);
+  border-color: var(--color-danger-border);
+  color: var(--color-danger);
+}

apps/frontend/src/app/shared/components/ui/alert/alert.spec.ts

@@ -0,0 +1,30 @@
+import { Component } from '@angular/core';
+import { TestBed } from '@angular/core/testing';
+import { Alert } from './alert';
+
+@Component({
+  standalone: true,
+  imports: [Alert],
+  template: `<ev-alert severity="success">C'est fait</ev-alert>`,
+})
+class AlertHost {}
+
+describe('Alert', () => {
+  it('applique la classe danger par défaut', async () => {
+    await TestBed.configureTestingModule({ imports: [Alert] }).compileComponents();
+    const fixture = TestBed.createComponent(Alert);
+    fixture.detectChanges();
+
+    expect(fixture.nativeElement.classList).toContain('ev-alert--danger');
+  });
+
+  it('applique la sévérité demandée et projette le contenu', async () => {
+    await TestBed.configureTestingModule({ imports: [AlertHost] }).compileComponents();
+    const fixture = TestBed.createComponent(AlertHost);
+    fixture.detectChanges();
+
+    const el = fixture.nativeElement.querySelector('.ev-alert');
+    expect(el.classList).toContain('ev-alert--success');
+    expect(el.textContent).toContain("C'est fait");
+  });
+});

apps/frontend/src/app/shared/components/ui/alert/alert.ts

@@ -0,0 +1,21 @@
+import { Component, HostBinding, input } from '@angular/core';
+
+export type AlertSeverity = 'success' | 'warning' | 'danger';
+
+@Component({
+  selector: 'ev-alert',
+  standalone: true,
+  templateUrl: './alert.html',
+  styleUrl: './alert.scss',
+})
+export class Alert {
+  severity = input<AlertSeverity>('danger');
+
+  @HostBinding('class')
+  get hostClass(): string {
+    return `ev-alert ev-alert--${this.severity()}`;
+  }
+
+  @HostBinding('attr.role')
+  readonly role = 'alert';
+}

apps/frontend/src/app/shared/components/ui/badge/badge.html

@@ -0,0 +1,3 @@
+<span class="ev-badge" [class]="'ev-badge--' + tone()">
+  <ng-content></ng-content>
+</span>

apps/frontend/src/app/shared/components/ui/badge/badge.scss

@@ -0,0 +1,35 @@
+:host {
+  display: inline-flex;
+  flex-shrink: 0;
+}
+
+.ev-badge {
+  display: inline-block;
+  font-size: 0.7rem;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.02em;
+  padding: 0.2rem 0.55rem;
+  border-radius: var(--radius-pill);
+  color: var(--color-text-inverse);
+}
+
+.ev-badge--success {
+  background: var(--color-success);
+}
+
+.ev-badge--warning {
+  background: var(--color-warning);
+}
+
+.ev-badge--danger {
+  background: var(--color-danger);
+}
+
+.ev-badge--critical {
+  background: var(--color-critical);
+}
+
+.ev-badge--neutral {
+  background: var(--color-text-muted);
+}

apps/frontend/src/app/shared/components/ui/badge/badge.spec.ts

@@ -0,0 +1,30 @@
+import { Component } from '@angular/core';
+import { TestBed } from '@angular/core/testing';
+import { Badge } from './badge';
+
+@Component({
+  standalone: true,
+  imports: [Badge],
+  template: `<ev-badge tone="danger">critique</ev-badge>`,
+})
+class BadgeHost {}
+
+describe('Badge', () => {
+  it('applique le ton neutral par défaut', async () => {
+    await TestBed.configureTestingModule({ imports: [Badge] }).compileComponents();
+    const fixture = TestBed.createComponent(Badge);
+    fixture.detectChanges();
+
+    expect(fixture.nativeElement.querySelector('.ev-badge').classList).toContain('ev-badge--neutral');
+  });
+
+  it('applique le ton demandé et projette le contenu', async () => {
+    await TestBed.configureTestingModule({ imports: [BadgeHost] }).compileComponents();
+    const fixture = TestBed.createComponent(BadgeHost);
+    fixture.detectChanges();
+
+    const el = fixture.nativeElement.querySelector('.ev-badge');
+    expect(el.classList).toContain('ev-badge--danger');
+    expect(el.textContent).toContain('critique');
+  });
+});

apps/frontend/src/app/shared/components/ui/badge/badge.ts

@@ -0,0 +1,13 @@
+import { Component, input } from '@angular/core';
+
+export type BadgeTone = 'success' | 'warning' | 'danger' | 'critical' | 'neutral';
+
+@Component({
+  selector: 'ev-badge',
+  standalone: true,
+  templateUrl: './badge.html',
+  styleUrl: './badge.scss',
+})
+export class Badge {
+  tone = input<BadgeTone>('neutral');
+}

apps/frontend/src/app/shared/components/ui/brand/brand.html

@@ -0,0 +1,2 @@
+<img src="/logo-icon.png" alt="" class="ev-brand__icon" />
+<span class="ev-brand__name">EnerVision</span>

apps/frontend/src/app/shared/components/ui/brand/brand.scss

@@ -0,0 +1,19 @@
+:host {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.45em;
+  font-size: 1.5rem;
+  font-weight: 700;
+  color: var(--color-text);
+  line-height: 1;
+}
+
+.ev-brand__icon {
+  height: 1.3em;
+  width: auto;
+  flex-shrink: 0;
+}
+
+.ev-brand__name {
+  white-space: nowrap;
+}