ci(frontend): teste sur Node 26, comme l'image

L'image frontend passe sur node:26-alpine3.22 ; la CI restait sur Node 24
et ne validait donc plus l'interpréteur qui construit le SPA. Angular 22.1.8
accepte >=26.0.0 ; Node 26 devient LTS le 28 octobre 2026, Node 24 passe en
maintenance le 20.

.env.example

@@ -17,3 +17,39 @@ APP_LOG_LEVEL=INFO
 APP_SECRET_KEY=change_me
 APP_CORS_ORIGINS=http://localhost:4200
 BACKEND_PORT=8000
+FRONTEND_PORT=3000
+
+# Mailpit capture les courriels du backend, rien ne sort vers l'extérieur.
+MAILPIT_SMTP_PORT=1025
+MAILPIT_UI_PORT=8025
+
+# 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
+
+# Airflow (webserver + scheduler, LocalExecutor). Base de métadonnées dédiée `airflow` dans le
+# même conteneur `db` (cf. db/init/120-airflow-database.sql), pas un conteneur de plus.
+AIRFLOW_PORT=8080
+# Chiffre les connexions/variables stockées par Airflow. Générer la vôtre :
+# python -c "from cryptography.fernet import Fernet; print(Fernet.generate_key().decode())"
+AIRFLOW_FERNET_KEY=change_me
+# Clé Flask du webserver Airflow (signature de session), distincte de la précédente. Générer la
+# vôtre : python -c "import secrets; print(secrets.token_urlsafe(48))"
+AIRFLOW_WEBSERVER_SECRET_KEY=change_me
+AIRFLOW_ADMIN_USERNAME=admin
+# Compte Airflow créé au premier démarrage (service `airflow-init`), sans rapport avec les
+# comptes `app_user` d'EnerVision.
+AIRFLOW_ADMIN_PASSWORD=change_me
+AIRFLOW_ADMIN_EMAIL=admin@enervision.fr
+# `APP_SECRET_KEY` du backend, que le DAG `alertes` lance en sous-processus. Distincte de
+# celle de l'API : la détection ne signe aucun jeton, et Airflow exécute du code depuis son
+# interface (cf. ADR 0008). Générer la vôtre :
+# python -c "import secrets; print(secrets.token_urlsafe(48))"
+AIRFLOW_APP_SECRET_KEY=change_me
+
+# Stack complète derrière le reverse proxy (docker-compose.prod.yml).
+# PUBLIC_HOST alimente l'origine CORS, le lien de réinitialisation et le certificat.
+PUBLIC_HOST=enervision.local
+ACME_EMAIL=

.github/dependabot.yml

@@ -38,3 +38,9 @@ updates:
     directory: "/apps/frontend"
     schedule:
       interval: "weekly"
+
+  # Images du reverse proxy et du compagnon ACME, épinglées dans les fichiers Compose
+  - package-ecosystem: "docker-compose"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/airflow.yml

@@ -0,0 +1,101 @@
+name: Airflow
+
+# Piège : la version de Python vient de etl/airflow/.python-version. C'est 3.12 et non 3.14
+# (contrairement à backend.yml et ml.yml) : apache-airflow 2.10 ne supporte pas 3.14. Le 3.14 de
+# ml/ ne vit que dans l'image Docker, dans son propre environnement (cf. etl/airflow/Dockerfile).
+#
+# Piège : l'image COPY les fichiers de dépendances et le code de ml/ et de apps/backend/. Une
+# modification de l'un ou de l'autre peut donc casser sa construction, d'où ces chemins dans
+# les déclencheurs, alors même que ce workflow ne teste ni le modèle ni l'API.
+
+on:
+  push:
+    paths:
+      - "etl/airflow/**"
+      - "ml/pyproject.toml"
+      - "ml/uv.lock"
+      - "ml/enervision_ml/**"
+      - "apps/backend/pyproject.toml"
+      - "apps/backend/uv.lock"
+      - "apps/backend/app/**"
+      - ".github/workflows/airflow.yml"
+  pull_request:
+    paths:
+      - "etl/airflow/**"
+      - "ml/pyproject.toml"
+      - "ml/uv.lock"
+      - "ml/enervision_ml/**"
+      - "apps/backend/pyproject.toml"
+      - "apps/backend/uv.lock"
+      - "apps/backend/app/**"
+      - ".github/workflows/airflow.yml"
+
+permissions:
+  contents: read
+
+concurrency:
+  group: airflow-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  verification:
+    name: Lint et intégrité des DAGs
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: etl/airflow
+
+    steps:
+      - name: Récupère le dépôt
+        uses: actions/checkout@v7
+
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          enable-cache: true
+          cache-dependency-glob: etl/airflow/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 .
+
+      # Aucun test ne lance de tâche ni de scheduler : DagBag charge les fichiers de dags/ et
+      # vérifie import, planification, plafonds d'exécution et commande de chaque tâche.
+      - name: Tests d'intégrité des DAGs
+        run: uv run pytest
+
+  image:
+    name: Construction de l'image
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Récupère le dépôt
+        uses: actions/checkout@v7
+
+      - name: Construit l'image (contexte à la racine, elle COPY ml/ et apps/backend/)
+        run: docker build -f etl/airflow/Dockerfile -t enervision-airflow:ci .
+
+      # Vérifie ce qui ne casse qu'à l'exécution, pas à la construction : libgomp1 absent
+      # (`OSError: libgomp.so.1` au premier import) ou environnement ml/ non figé.
+      - name: Vérifie que le pipeline ML s'importe sans réseau
+        run: >
+          docker run --rm --network none enervision-airflow:ci
+          bash -c "cd /opt/ml && env -u VIRTUAL_ENV uv run --no-sync python -m enervision_ml.train --help"
+
+      # `--help` sort par argparse avant `get_settings()` : ni base ni secret requis, et
+      # l'import du module prouve que l'environnement /opt/backend est complet. Les deux
+      # commandes du DAG `alertes` sont couvertes, `app.cli` tirant tout FastAPI derrière lui.
+      - name: Vérifie que les deux commandes du DAG alertes s'importent sans réseau
+        run: >
+          docker run --rm --network none enervision-airflow:ci
+          bash -c "cd /opt/backend
+          && env -u VIRTUAL_ENV uv run --no-sync python -m app.detection.internal_alerts --help
+          && env -u VIRTUAL_ENV uv run --no-sync python -m app.cli generate-recommendations --help"

.github/workflows/backend.yml

@@ -30,10 +30,10 @@ jobs:
 
     steps:
       - name: Récupère le dépôt
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Installe uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v7
         with:
           enable-cache: true
           cache-dependency-glob: apps/backend/uv.lock
@@ -56,3 +56,113 @@ 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@v7
+
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+        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@v7
+
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+        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
+
+  sast:
+    name: Analyse statique de sécurité
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: apps/backend
+
+    steps:
+      - name: Récupère le dépôt
+        uses: actions/checkout@v7
+
+      # Pourquoi : pas de cache ici. uvx n'installe pas le projet, le verrou n'alimente donc
+      # aucune clé de cache ; la seule roue téléchargée est celle de Bandit.
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+
+      # Pourquoi : le périmètre est `app`, le code livré. Les tests emploient légitimement des
+      # secrets factices et des `assert` que Bandit signalerait sans qu'aucun n'atteigne la prod.
+      - name: Analyse le code livré (bloquant à partir de MEDIUM)
+        run: uvx bandit==1.9.4 --recursive app --severity-level medium --confidence-level medium
+
+      # Piège : sans cette seconde passe, un constat LOW disparaîtrait du journal sans trace.
+      - name: Rapport complet, tous niveaux
+        continue-on-error: true
+        run: uvx bandit==1.9.4 --recursive app

.github/workflows/frontend.yml

@@ -1,5 +1,4 @@
 name: Frontend
-# Pipeline à choix multiple
 
 on:
   push:
@@ -10,59 +9,56 @@ on:
     paths:
       - "apps/frontend/**"
       - ".github/workflows/frontend.yml"
-# Ordre de lancement des jobs
-# build -> test -> sonarqube -> deploy
+
+permissions:
+  contents: read
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-node@v6
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
         with:
-          node-version: 24
+          node-version: 26
           cache: npm
           cache-dependency-path: apps/frontend/package-lock.json
-      
-      - run: npm ci 
+
+      - run: npm ci
         working-directory: apps/frontend
       - run: npm run build
         working-directory: apps/frontend
 
-  test:  
+  security-audit:
+    name: Audit des dépendances
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 26
+      # 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
     steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-node@v6
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
         with:
-          node-version: 24
+          node-version: 26
           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 --code-coverage --coverageReporters=lcov
+      - 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
+        uses: actions/upload-artifact@v7
         with:
           name: frontend-coverage
           path: apps/frontend/coverage/frontend/lcov.info
-        
-  sonarqube:
-    needs: [build, test]
-    name: SonarQube
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          fetch-depth: 0
-      - name: Download coverage
-        uses: actions/download-artifact@v4
-        with:
-          name: frontend-coverage
-          path: apps/frontend/coverage/frontend
-      - name: SonarQube Scan
-        uses: SonarSource/sonarqube-scan-action@v8
-        env:
-          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

.github/workflows/ml.yml

@@ -30,10 +30,10 @@ jobs:
 
     steps:
       - name: Récupère le dépôt
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Installe uv
-        uses: astral-sh/setup-uv@v5
+        uses: astral-sh/setup-uv@v7
         with:
           enable-cache: true
           cache-dependency-glob: ml/uv.lock
@@ -57,3 +57,26 @@ jobs:
       # synthetiques ou un magasin SQLite local jetable (cf. ml/tests/test_train.py).
       - name: Tests
         run: uv run pytest
+
+  sast:
+    name: Analyse statique de sécurité
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ml
+
+    steps:
+      - name: Récupère le dépôt
+        uses: actions/checkout@v7
+
+      # Pourquoi : pas de cache ici. uvx n'installe pas le projet, le verrou n'alimente donc
+      # aucune clé de cache ; la seule roue téléchargée est celle de Bandit.
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+
+      - name: Analyse le code livré (bloquant à partir de MEDIUM)
+        run: uvx bandit==1.9.4 --recursive enervision_ml --severity-level medium --confidence-level medium
+
+      - name: Rapport complet, tous niveaux
+        continue-on-error: true
+        run: uvx bandit==1.9.4 --recursive enervision_ml

.github/workflows/sonarqube.yml

@@ -0,0 +1,172 @@
+name: SonarQube
+
+on:
+  push:
+    paths:
+      - "apps/frontend/**"
+      - "apps/backend/**"
+      - "ml/**"
+      - "etl/airflow/**"
+      - ".github/workflows/sonarqube.yml"
+  pull_request:
+    paths:
+      - "apps/frontend/**"
+      - "apps/backend/**"
+      - "ml/**"
+      - "etl/airflow/**"
+      - ".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@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 26
+          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@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 26
+          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@v7
+        with:
+          name: frontend-coverage
+          path: apps/frontend/coverage/frontend/lcov.info
+
+  build-back:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+        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@v7
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+        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@v7
+        with:
+          name: backend-coverage
+          path: apps/backend/coverage.xml
+
+  test-ml:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - name: Installe uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          enable-cache: true
+          cache-dependency-glob: ml/uv.lock
+
+      - name: Installe l'interpréteur déclaré par .python-version
+        run: uv python install
+        working-directory: ml
+
+      - name: Synchronise les dépendances sans dévier du verrou
+        run: uv sync --all-groups --frozen
+        working-directory: ml
+
+      - name: Lancement des tests et génération du rapport de couverture (ML)
+        run: uv run pytest --cov-report=xml
+        working-directory: ml
+
+      - name: Upload coverage
+        uses: actions/upload-artifact@v7
+        with:
+          name: ml-coverage
+          path: ml/coverage.xml
+
+  sonarqube:
+    needs: [build-front, build-back, test-front, test-back, test-ml]
+    name: SonarQube
+    # Pourquoi : GitHub ne fournit pas les secrets aux workflows lancés par dependabot[bot].
+    # Sans SONAR_TOKEN le scan échoue sans rien analyser ; build et tests restent joués.
+    if: github.actor != 'dependabot[bot]'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+      - name: Téléchargement du rapport de couverture (Front)
+        uses: actions/download-artifact@v8
+        with:
+          name: frontend-coverage
+          path: apps/frontend/coverage/frontend
+      - name: Téléchargement du rapport de couverture (Back)
+        uses: actions/download-artifact@v8
+        with:
+          name: backend-coverage
+          path: apps/backend
+      - name: Téléchargement du rapport de couverture (ML)
+        uses: actions/download-artifact@v8
+        with:
+          name: ml-coverage
+          path: ml
+      - name: SonarQube Scan
+        uses: SonarSource/sonarqube-scan-action@v8
+        env:
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

.gitignore

@@ -66,6 +66,12 @@ ml/mlruns/
 ml/mlartifacts/
 ml/mlflow.db
 
+# Airflow : base sqlite locale generee par les tests d'integrite des DAGs (etl/airflow/tests)
+etl/airflow/tests/.airflow_home/
+
+# TLS : certificats du reverse proxy, générés par script ou par certbot
+infra/proxy/tls/*.pem
+
 # IDE et OS
 .idea/
 .vscode/

Makefile

@@ -1,17 +1,31 @@
 BACKEND := apps/backend
 FRONTEND := apps/frontend
 ML := ml
+AIRFLOW := etl/airflow
+COMPOSE_PROD := docker compose -f docker-compose.yml -f docker-compose.prod.yml
+
+# Piège : sans `export`, une valeur passée en ligne de commande n'atteindrait pas docker compose.
+# PUBLIC_HOST retombe sur le `.env`, que make ne lit pas, puis sur la valeur de `.env.example`.
+PUBLIC_HOST ?= $(shell sed -n 's/^PUBLIC_HOST=//p' .env 2>/dev/null | tail -1)
+PUBLIC_HOST := $(or $(strip $(PUBLIC_HOST)),enervision.local)
+export PUBLIC_HOST
+ifdef ACME_EMAIL
+export ACME_EMAIL
+endif
 
 .DEFAULT_GOAL := help
-.PHONY: help install install-backend install-frontend install-ml dev dev-backend dev-frontend \
+.PHONY: help install install-backend install-frontend install-ml install-airflow \
+        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 \
-        ml-lint ml-typecheck ml-test ml-check ml-train
+        ml-lint ml-typecheck ml-test ml-check ml-train ml-score detect-alerts recommendations \
+        airflow-lint airflow-test airflow-check airflow-up airflow-down airflow-logs \
+        tls-selfsigned tls-acme tls-renew stack-up stack-down stack-logs
 
 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 install-ml ## Installe les dépendances backend, frontend et ML
+install: install-backend install-frontend install-ml install-airflow ## Installe les dépendances backend, frontend, ML et Airflow
 
 install-backend: ## Installe les dépendances du backend
 	cd $(BACKEND) && uv sync --all-groups
@@ -22,6 +36,9 @@ install-frontend: ## Installe les dépendances du frontend
 install-ml: ## Installe les dépendances du pipeline ML
 	cd $(ML) && uv sync --all-groups
 
+install-airflow: ## Installe les dépendances de lint/test des DAGs Airflow
+	cd $(AIRFLOW) && 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 & \
@@ -74,9 +91,65 @@ ml-check: ml-lint ml-typecheck ml-test ## Chaîne de vérification complète du
 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),)
+
+detect-alerts: ## Détecte les alertes internes depuis les lectures en base. SITE= et NOW= optionnels
+	cd $(BACKEND) && uv run python -m app.detection.internal_alerts $(if $(SITE),--site-id $(SITE),) $(if $(NOW),--now $(NOW),)
+
+recommendations: ## Genere les recommandations depuis les alertes en base. SITE=identifiant optionnel
+	cd $(BACKEND) && uv run python -m app.cli generate-recommendations $(if $(SITE),--site-id $(SITE),)
+
+airflow-lint: ## Analyse statique des DAGs Airflow
+	cd $(AIRFLOW) && uv run ruff check .
+
+airflow-test: ## Verifie que les DAGs s'importent sans erreur et ont la structure attendue
+	cd $(AIRFLOW) && uv run pytest
+
+airflow-check: airflow-lint airflow-test ## Chaîne de vérification complète des DAGs Airflow
+
+airflow-up: ## Démarre Airflow (webserver + scheduler, LocalExecutor). db-up requis avant.
+	docker compose up -d airflow-init airflow-webserver airflow-scheduler
+	@echo "airflow  -> http://localhost:$${AIRFLOW_PORT:-8080}"
+
+airflow-down: ## Arrête le webserver et le scheduler Airflow
+	docker compose stop airflow-webserver airflow-scheduler
+
+airflow-logs: ## Suit les journaux du scheduler Airflow (où tournent les tâches, LocalExecutor)
+	docker compose logs -f airflow-scheduler
+
 docker-build: ## Construit l'image du backend
 	docker build -t enervision-backend:local $(BACKEND)
 
+tls-selfsigned: ## Génère le certificat de démonstration. PUBLIC_HOST=..., FORCE=1 pour écraser
+	./scripts/tls-selfsigned.sh $(if $(FORCE),--force,)
+
+stack-up: ## Démarre la stack complète derrière le reverse proxy (80/443). PUBLIC_HOST=... au besoin
+	@test -f infra/proxy/tls/fullchain.pem \
+		|| { echo "Aucun certificat dans infra/proxy/tls. Lancer d'abord make tls-selfsigned"; exit 1; }
+	@openssl x509 -in infra/proxy/tls/fullchain.pem -noout -checkhost "$(PUBLIC_HOST)" >/dev/null \
+		|| { echo "Le certificat ne couvre pas $(PUBLIC_HOST). Relancer make tls-selfsigned PUBLIC_HOST=$(PUBLIC_HOST) FORCE=1"; exit 1; }
+	$(COMPOSE_PROD) up -d --build
+
+stack-down: ## Arrête la stack complète en conservant les données
+	$(COMPOSE_PROD) stop
+
+stack-logs: ## Suit les journaux du reverse proxy
+	$(COMPOSE_PROD) logs -f proxy
+
+tls-acme: ## Demande un certificat Let's Encrypt. PUBLIC_HOST public et ACME_EMAIL requis
+	@test "$(PUBLIC_HOST)" != enervision.local \
+		|| { echo "PUBLIC_HOST doit être un domaine public résolvable, pas le nom de démonstration"; exit 1; }
+	$(COMPOSE_PROD) --profile acme run --rm certbot certonly --webroot -w /var/www/certbot \
+		-d $(PUBLIC_HOST) \
+		--email $${ACME_EMAIL:?ACME_EMAIL=... requis} \
+		--agree-tos --no-eff-email --deploy-hook /deploy-hook.sh
+	$(COMPOSE_PROD) exec proxy nginx -s reload
+
+tls-renew: ## Renouvelle les certificats Let's Encrypt et recharge le proxy
+	$(COMPOSE_PROD) --profile acme run --rm certbot renew --deploy-hook /deploy-hook.sh
+	$(COMPOSE_PROD) exec proxy nginx -s reload
+
 db-up: ## Démarre la base PostgreSQL TimescaleDB
 	docker compose up -d db
 

README.md

@@ -9,8 +9,10 @@ series temporelles energetiques, deployee sur une machine on-premise.
 |-------|----------------------------------------------------------|
 | J1    | Valider la préparation de l'environnement et du repo     |
 | J2    | Valider le périmètre retenu et les choix technologiques  |
-| J3    | Valider l'architecture et la gestion de la sécurité      |
-| J4    | Valider la robustesse et assurer les livrables           |
+| J3    | Ingestion & backend                                      |
+| J4    | Architecture, sécurité & frontend                        |
+| J5    | Valider la robustesse et assurer les livrables           |
+| J6    | Amélioration possible                                    |
 
 Ce que la documentation apporte à chacun : [docs/architecture/00-vue-ensemble.md](docs/architecture/00-vue-ensemble.md).
 
@@ -18,14 +20,15 @@ Ce que la documentation apporte à chacun : [docs/architecture/00-vue-ensemble.m
 
 | Domaine    | Technologie                         | Emplacement         | Etat          |
 |------------|-------------------------------------|---------------------|---------------|
-| Backend    | FastAPI, Python 3.14                | `apps/backend`      | Initialise    |
-| Frontend   | Angular 22, Node 24 LTS             | `apps/frontend`     | Tableau de bord |
-| Base       | PostgreSQL 17 + TimescaleDB         | `db`                | Initialise    |
-| ETL        | Apache Airflow                      | `etl/airflow`       | A initialiser |
+| Backend    | FastAPI, Python 3.14                | `apps/backend`      | En place    |
+| Frontend   | Angular 22, Node 24 LTS             | `apps/frontend`     | En place |
+| Base       | PostgreSQL 17 + TimescaleDB         | `db`                | En place    |
+| ETL        | Apache Airflow                      | `etl/airflow`       | Trois DAGs    |
 | Infra      | Terraform (k3s single-node)         | `infra/terraform`   | Initialise    |
-| CI/CD      | GitHub Actions                      | `.github/workflows` | Backend en place |
+| Reverse proxy | Nginx, TLS                       | `infra/proxy`       | En place      |
+| CI/CD      | GitHub Actions                      | `.github/workflows` | En place |
 | Monitoring | Prometheus, Grafana, Alertmanager   | `monitoring`        | A initialiser |
-| ML         | LightGBM, MLflow                    | `ml`                | Entrainement initialise |
+| ML         | LightGBM, MLflow                    | `ml`                | En place |
 
 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
@@ -47,13 +50,15 @@ L'etat detaille de chaque brique et les vues d'architecture sont dans
 │   ├── migrations/     Migrations SQL versionnees
 │   └── seeds/          Jeux de donnees de reference
 ├── etl/airflow/
-│   ├── dags/           DAGs d'ingestion et d'agregation
+│   ├── dags/           DAGs d'orchestration (pipeline ML, alertes)
 │   ├── plugins/        Operateurs et hooks maison
 │   ├── include/        Requetes SQL et ressources des DAGs
 │   └── tests/          Tests d'integrite des DAGs
-├── infra/terraform/
-│   ├── modules/        Modules reutilisables
-│   └── environments/   Racines Terraform, une par environnement
+├── infra/
+│   ├── proxy/          Reverse proxy Nginx : terminaison TLS et routage
+│   └── terraform/
+│       ├── modules/        Modules reutilisables
+│       └── environments/   Racines Terraform, une par environnement
 ├── ml/                 Pipeline d'entrainement LightGBM, suivi MLflow
 ├── monitoring/
 │   ├── prometheus/     Collecte et regles d'alerte
@@ -98,6 +103,21 @@ Verifier que la base repond et que l'extension est chargee :
 curl -s localhost:8000/api/v1/health/ready
 ```
 
+## Stack complète derrière le reverse proxy
+
+Pour servir l'application comme sur la machine cible, en HTTPS et sous une seule origine.
+L'overlay emploie `!override` et `!reset`, donc **Docker Compose 2.24.4 ou plus récent** :
+
+```bash
+make tls-selfsigned PUBLIC_HOST=enervision.local   # certificat de démonstration
+make stack-up PUBLIC_HOST=enervision.local         # nginx en 80/443, rien d'autre n'est publié
+```
+
+Le navigateur avertit d'un émetteur inconnu : Let's Encrypt reste hors d'atteinte tant qu'aucun
+nom de domaine public ne résout vers la machine. Routage, mode ACME et renouvellement dans
+[`infra/proxy/README.md`](infra/proxy/README.md) ; la décision et ses motifs dans
+[l'ADR 0007](docs/adr/0007-terminaison-tls-et-reverse-proxy-nginx.md).
+
 ## Conventions
 
 - Branches : `feat/`, `fix/`, `chore/`, `docs/`, `test/` suivi d'un libelle court.

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/Dockerfile

@@ -11,13 +11,14 @@ WORKDIR /app
 RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,source=uv.lock,target=uv.lock \
     --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
-    uv sync --locked --no-install-project --no-dev
+    uv sync --locked --no-install-project --no-dev --no-build
 
+# Le projet lui-meme n'est pas installe (pas de second `uv sync`) : il tourne depuis /app, le
+# repertoire de travail, et rien ne lit ses metadonnees. L'installer imposerait de le construire
+# (backend hatchling), donc de retirer `--no-build` de l'etape ci-dessus, qui garantit que
+# l'installation des dependances n'execute aucun script de build (regle Sonar docker:S8541).
 COPY . /app
 
-RUN --mount=type=cache,target=/root/.cache/uv \
-    uv sync --locked --no-dev
-
 
 FROM python:3.14-slim AS runtime
 

apps/backend/README.md

@@ -113,6 +113,7 @@ Le sens de dependance est unique : `endpoints` vers `services` vers `repositorie
 | `/api/v1/sites/{site_id}` | Décrit un site | `lecteur` |
 | `/api/v1/recommendations` | Liste les recommandations | `lecteur` |
 | `/api/v1/recommendations/{recommendation_id}` | Décrit une recommandation | `lecteur` |
+| `/api/v1/recommendations/generate` | Génère les recommandations depuis les alertes (POST) | `admin` |
 | `/metrics` | Métriques au format Prometheus | jeton si `APP_METRICS_TOKEN` |
 | `/docs`, `/openapi.json` | Documentation, fermée en `staging` et `prod` | public sinon |
 

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
-diff d'une pull request.
+donc de modifier `ROUTES_PUBLIQUES` dans `acces.py`**, ce qui apparaît en clair dans la diff
+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
@@ -178,14 +180,23 @@ 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)]
 
 
 def get_recommendation_service(session: SessionDep) -> RecommendationService:
-    return RecommendationService(recommendations=RecommendationRepository(session))
+    return RecommendationService(
+        recommendations=RecommendationRepository(session),
+        alerts=AlertRepository(session),
+        transaction=session,
+    )
 
 
 RecommendationServiceDep = Annotated[RecommendationService, Depends(get_recommendation_service)]
@@ -212,6 +223,15 @@ 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

@@ -63,7 +63,7 @@ TAGS: Final[list[dict[str, Any]]] = [
         "name": "recommendations",
         "description": (
             "Consultation des recommandations issues des alertes. Accessible à partir du rôle "
-            "`lecteur`."
+            "`lecteur`. Leur génération par le moteur de règles est réservée au rôle `admin`."
         ),
     },
     {
@@ -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/recommendations.py

@@ -1,13 +1,18 @@
 from fastapi import APIRouter, HTTPException, status
 
-from app.api.deps import LecteurDep, RecommendationServiceDep
-from app.api.openapi import REPONSE_VALIDATION, Reponses
+from app.api.deps import AdminDep, LecteurDep, RecommendationServiceDep
+from app.api.openapi import REPONSE_VALIDATION, REPONSES_ADMIN, Reponses
 from app.schemas.errors import ErrorResponse
-from app.schemas.recommendation import RecommendationResponse
+from app.schemas.recommendation import (
+    RecommendationGenerationResponse,
+    RecommendationResponse,
+)
 from app.services.recommendation import RecommendationNotFoundError
 
 router = APIRouter()
 
+REPONSES_GENERATION: Reponses = {**REPONSES_ADMIN, **REPONSE_VALIDATION}
+
 REPONSES_INTROUVABLE: Reponses = {
     **REPONSE_VALIDATION,
     404: {"model": ErrorResponse, "description": "Aucune recommandation ne porte cet identifiant."},
@@ -38,3 +43,22 @@ async def get_recommendation(
             status_code=status.HTTP_404_NOT_FOUND, detail="Recommandation introuvable"
         ) from erreur
     return RecommendationResponse.model_validate(recommendation)
+
+
+@router.post(
+    "/generate",
+    response_model=RecommendationGenerationResponse,
+    summary="Génère les recommandations à partir des alertes",
+    responses=REPONSES_GENERATION,
+)
+async def generate_recommendations(
+    _: AdminDep,
+    service: RecommendationServiceDep,
+    site_id: str | None = None,
+) -> RecommendationGenerationResponse:
+    rapport = await service.generate(site_id=site_id)
+    return RecommendationGenerationResponse(
+        alerts_examined=rapport.alertes_examinees,
+        recommendations_created=rapport.recommandations_creees,
+        already_present=rapport.deja_presentes,
+    )

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/cli.py

@@ -22,8 +22,11 @@ from app.core.hashing import build_hasher
 from app.core.roles import Role
 from app.db.session import get_session_factory
 from app.main import create_app
+from app.repositories.alert import AlertRepository
+from app.repositories.recommendation import RecommendationRepository
 from app.repositories.user import UserRepository
 from app.schemas.auth import PASSWORD_MIN_LENGTH, SPECIAL_CHARACTERS, valide_complexite
+from app.services.recommendation import RecommendationService
 
 LONGUEUR_MOT_DE_PASSE_GENERE = 24
 CHEMIN_CONTRAT = Path(__file__).resolve().parent.parent / "openapi.json"
@@ -63,6 +66,22 @@ async def create_admin(
     )
 
 
+async def generate_recommendations(*, site_id: str | None) -> str:
+    async with get_session_factory()() as session:
+        service = RecommendationService(
+            recommendations=RecommendationRepository(session),
+            alerts=AlertRepository(session),
+            transaction=session,
+        )
+        rapport = await service.generate(site_id=site_id)
+
+    return (
+        f"{rapport.alertes_examinees} alerte(s) examinée(s), "
+        f"{rapport.recommandations_creees} recommandation(s) créée(s), "
+        f"{rapport.deja_presentes} déjà présente(s)"
+    )
+
+
 # Piège : le schéma ne doit dépendre ni du `.env` du poste ni des variables `APP_*`, sinon le
 # fichier versionné changerait de machine en machine et le test de dérive deviendrait un oracle
 # de configuration locale. Tout ce qui atteint le schéma est donc posé ici, `_env_file` compris.
@@ -109,6 +128,14 @@ def build_parser() -> argparse.ArgumentParser:
         "export-openapi", help="Écrit le contrat OpenAPI sur disque"
     )
     contrat.add_argument("--output", default=str(CHEMIN_CONTRAT))
+
+    recommandations = sous_commandes.add_parser(
+        "generate-recommendations",
+        help="Applique le moteur de règles aux alertes en base",
+    )
+    recommandations.add_argument(
+        "--site-id", default=None, help="Limite le traitement aux alertes d'un site"
+    )
     return parser
 
 
@@ -152,6 +179,10 @@ def main(argv: list[str] | None = None) -> int:
         print(export_openapi(Path(arguments.output)))
         return 0
 
+    if arguments.commande == "generate-recommendations":
+        print(asyncio.run(generate_recommendations(site_id=arguments.site_id)))
+        return 0
+
     mot_de_passe = read_password(generate=arguments.generate)
 
     succes, message = asyncio.run(

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 +1,416 @@
+# Contrainte : la réponse de l'API Mock est une entrée hostile, pas une source de confiance.
+# Voir OWASP API10 dans docs/architecture/owasp-traceabilite.md. Rien de ce qu'elle renvoie
+# n'atteint la base sans passer par build_site_row() ou build_reading_row() : seuls les champs
+# attendus sont recopiés, les grandeurs physiques sont bornées par PHYSICAL_BOUNDS et la taille
+# des tableaux est plafonnée par MAX_SITES et par --limit. Une valeur hors bornes devient NULL
+# et laisse sa trace dans null_reasons plutôt que de lever : le mock émet des anomalies par
+# construction, et raw_data conserve de toute façon la réponse d'origine intacte.
+
+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"
+
+MAX_SITES = 100
+
+MAX_LIMIT = 1000
+
+# Les quatre seules valeurs que la contrainte ck_reading_quality accepte.
+ACCEPTED_QUALITIES = frozenset({"good", "partial", "degraded", "critical"})
+
+PHYSICAL_BOUNDS: dict[str, tuple[float, float]] = {
+    "consumption_kw": (0.0, 100_000.0),
+    "consumption_kwh": (0.0, 100_000.0),
+    "voltage_v": (0.0, 1_000.0),
+    "current_a": (0.0, 10_000.0),
+    "power_factor": (0.0, 1.0),
+    "temperature_celsius": (-90.0, 60.0),
+    "humidity_percent": (0.0, 100.0),
+}
+
+CAPACITY_BOUNDS = (0.0, 100_000.0)
+
+
+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,
+    )
+
+
+def read_text(payload: dict[str, Any], key: str) -> str:
+    value = payload.get(key)
+
+    if not isinstance(value, str) or not value:
+        raise ValueError(f"Champ {key} absent ou invalide dans la réponse de l'API Mock.")
+
+    return value
+
+
+def optional_text(value: Any) -> str | None:
+    return value if isinstance(value, str) else None
+
+
+def coerce_measure(
+    value: Any,
+    bounds: tuple[float, float],
+) -> float | None:
+    if isinstance(value, bool) or not isinstance(value, int | float):
+        return None
+
+    lower, upper = bounds
+
+    # Écarte aussi NaN et les infinis, qu'aucune comparaison de bornes ne retient.
+    return float(value) if lower <= value <= upper else None
+
+
+def resolve_quality(
+    value: Any,
+    rejected: list[str],
+) -> str | None:
+    quality = value if isinstance(value, str) and value in ACCEPTED_QUALITIES else None
+
+    if rejected:
+        return "critical" if quality == "critical" else "degraded"
+
+    return quality
+
+
+def resolve_null_reasons(
+    value: Any,
+    rejected: list[str],
+) -> list[str]:
+    reported = [str(reason) for reason in value] if isinstance(value, list) else []
+
+    return reported + rejected
+
+
+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.")
+
+    if len(payload) > MAX_SITES:
+        raise ValueError(f"La réponse /api/v1/sites dépasse le plafond de {MAX_SITES} sites.")
+
+    return payload
+
+
+def build_site_row(
+    site: dict[str, Any],
+) -> dict[str, Any]:
+    return {
+        "site_id": read_text(site, "site_id"),
+        "site_type": read_text(site, "site_type"),
+        "site_name": read_text(site, "site_name"),
+        "location": optional_text(site.get("location")),
+        "capacity_kw": coerce_measure(site.get("capacity_kw"), CAPACITY_BOUNDS),
+        "status": optional_text(site.get("status")),
+    }
+
+
+async def upsert_sites(
+    connection: AsyncConnection,
+    sites: list[dict[str, Any]],
+) -> None:
+    rows = [build_site_row(site) for site in sites]
+
+    if not rows:
+        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
+            """
+        ),
+        rows,
+    )
+
+
+async def fetch_readings(
+    client: httpx.AsyncClient,
+    site_id: str,
+    start_time: datetime,
+    end_time: datetime,
+    limit: int = MAX_LIMIT,
+) -> 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.")
+
+    if len(payload) > limit:
+        raise ValueError(f"La réponse /api/v1/readings dépasse la limite demandée de {limit}.")
+
+    return payload
+
+
+def build_reading_row(
+    reading: dict[str, Any],
+) -> dict[str, Any]:
+    measures: dict[str, float | None] = {}
+    rejected: list[str] = []
+
+    for name, bounds in PHYSICAL_BOUNDS.items():
+        received = reading.get(name)
+        measures[name] = coerce_measure(received, bounds)
+
+        if received is not None and measures[name] is None:
+            rejected.append(f"out_of_physical_bounds:{name}")
+
+    return {
+        "site_id": read_text(reading, "site_id"),
+        "timestamp": parse_datetime(read_text(reading, "timestamp")),
+        "source": SOURCE_HISTORY,
+        "dataset_id": None,
+        **measures,
+        "consumption_euros": None,
+        "solar_irradiance_wm2": None,
+        "is_working_hours": None,
+        "data_quality": resolve_quality(reading.get("data_quality"), rejected),
+        "null_reasons": resolve_null_reasons(reading.get("null_reasons"), rejected),
+        "imputed_values": None,
+        "imputation_method": None,
+        "raw_data": json.dumps(
+            reading,
+            ensure_ascii=False,
+        ),
+    }
+
+
+# Le conflit vise l'index unique uq_reading_source plutôt que la table entière : sans cible
+# nommée, DO NOTHING avalerait aussi une violation de clé primaire.
+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 (site_id, timestamp, source, (coalesce(dataset_id, 0)))
+    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 = read_text(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=MAX_LIMIT,
+    )
+
+    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 > MAX_LIMIT:
+        raise ValueError(f"--limit doit être compris entre 1 et {MAX_LIMIT}.")
+
+    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/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

@@ -34,6 +34,21 @@ class ReadingRepository:
         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/repositories/recommendation.py

@@ -1,11 +1,24 @@
 from collections.abc import Sequence
+from dataclasses import asdict, dataclass
 
 from sqlalchemy import select
+from sqlalchemy.dialects.postgresql import insert
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.models.energy import Recommendation
 
 
+@dataclass(frozen=True, slots=True)
+class NouvelleRecommandation:
+    alert_id: int
+    action: str
+    explanation: str
+    rule_reference: str
+
+
+TAILLE_DE_LOT = 1000
+
+
 class RecommendationRepository:
     def __init__(self, session: AsyncSession) -> None:
         self._session = session
@@ -20,3 +33,19 @@ class RecommendationRepository:
         )
         recommendation: Recommendation | None = await self._session.scalar(requete)
         return recommendation
+
+    # Pourquoi : l'idempotence est déléguée à `uq_recommendation_alert_rule` plutôt qu'à une
+    # lecture préalable, qui laisserait une fenêtre entre le contrôle et l'insertion.
+    async def create_missing(self, nouvelles: Sequence[NouvelleRecommandation]) -> int:
+        creees = 0
+        # Piège : asyncpg plafonne une requête à 32 767 paramètres, soit 8 191 lignes de quatre
+        # colonnes. Au-delà de ce seuil un `INSERT` d'un seul tenant échouerait.
+        for debut in range(0, len(nouvelles), TAILLE_DE_LOT):
+            requete = (
+                insert(Recommendation)
+                .values([asdict(nouvelle) for nouvelle in nouvelles[debut : debut + TAILLE_DE_LOT]])
+                .on_conflict_do_nothing(constraint="uq_recommendation_alert_rule")
+                .returning(Recommendation.recommendation_id)
+            )
+            creees += len((await self._session.scalars(requete)).all())
+        return creees

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/recommendation.py

@@ -12,3 +12,9 @@ class RecommendationResponse(BaseModel):
     explanation: str
     rule_reference: str
     created_at: datetime
+
+
+class RecommendationGenerationResponse(BaseModel):
+    alerts_examined: int
+    recommendations_created: int
+    already_present: int

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/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/recommendation.py

@@ -1,7 +1,15 @@
 from collections.abc import Sequence
+from dataclasses import dataclass
+from typing import Protocol
 
 from app.models.energy import Recommendation
+from app.repositories.alert import AlertRepository
 from app.repositories.recommendation import RecommendationRepository
+from app.services.recommendation_rules import applique_les_regles
+
+
+class Transaction(Protocol):
+    async def commit(self) -> None: ...
 
 
 class RecommendationError(Exception):
@@ -12,9 +20,24 @@ class RecommendationNotFoundError(RecommendationError):
     pass
 
 
+@dataclass(frozen=True, slots=True)
+class RapportGeneration:
+    alertes_examinees: int
+    recommandations_creees: int
+    deja_presentes: int
+
+
 class RecommendationService:
-    def __init__(self, *, recommendations: RecommendationRepository) -> None:
+    def __init__(
+        self,
+        *,
+        recommendations: RecommendationRepository,
+        alerts: AlertRepository,
+        transaction: Transaction,
+    ) -> None:
         self._recommendations = recommendations
+        self._alerts = alerts
+        self._transaction = transaction
 
     async def list_all(self) -> Sequence[Recommendation]:
         return await self._recommendations.list_all()
@@ -24,3 +47,16 @@ class RecommendationService:
         if recommendation is None:
             raise RecommendationNotFoundError(recommendation_id)
         return recommendation
+
+    async def generate(self, *, site_id: str | None = None) -> RapportGeneration:
+        alertes = await self._alerts.list_all(site_id=site_id)
+        nouvelles = [nouvelle for alerte in alertes for nouvelle in applique_les_regles(alerte)]
+
+        creees = await self._recommendations.create_missing(nouvelles)
+        await self._transaction.commit()
+
+        return RapportGeneration(
+            alertes_examinees=len(alertes),
+            recommandations_creees=creees,
+            deja_presentes=len(nouvelles) - creees,
+        )

apps/backend/app/services/recommendation_rules.py

@@ -0,0 +1,117 @@
+# Piège : `rule_reference` est la clé d'idempotence en base, portée par la contrainte
+# `uq_recommendation_alert_rule`. Renommer une référence déjà livrée ne remplace pas les
+# recommandations existantes, il en crée de nouvelles à côté. Une règle qui change de sens
+# prend donc une référence suffixée `-v2` - REGLES.
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from typing import Final
+
+from app.models.energy import Alert
+from app.repositories.recommendation import NouvelleRecommandation
+from app.schemas.alert import AlertSeverity, AlertType
+
+FACTEUR_DEPASSEMENT_MAJEUR: Final = 1.2
+POURCENTAGE_DEPASSEMENT_MAJEUR: Final = round((FACTEUR_DEPASSEMENT_MAJEUR - 1) * 100)
+
+
+@dataclass(frozen=True, slots=True)
+class Regle:
+    reference: str
+    action: str
+    declencheur: Callable[[Alert], bool]
+    motif: Callable[[Alert], str]
+
+
+def _du_type(attendu: AlertType) -> Callable[[Alert], bool]:
+    return lambda alerte: alerte.type == attendu
+
+
+def _de_severite(attendue: AlertSeverity) -> Callable[[Alert], bool]:
+    return lambda alerte: alerte.severity == attendue
+
+
+# Un seuil nul ou négatif rendrait le rapport `value / threshold` arbitraire : l'alerte ne
+# renseigne alors aucun dépassement exploitable, et la règle ne se déclenche pas.
+def _depasse_largement_le_seuil(alerte: Alert) -> bool:
+    if alerte.value is None or alerte.threshold is None or alerte.threshold <= 0:
+        return False
+    return alerte.value >= alerte.threshold * FACTEUR_DEPASSEMENT_MAJEUR
+
+
+REGLES: Final[tuple[Regle, ...]] = (
+    Regle(
+        reference="spike-delestage-v1",
+        action="Délester les équipements non prioritaires sur le créneau du pic",
+        declencheur=_du_type(AlertType.SPIKE),
+        motif=lambda alerte: f"Pic de consommation signalé sur le site {alerte.site_id}",
+    ),
+    Regle(
+        reference="threshold-reduction-v1",
+        action="Ramener la puissance appelée sous le seuil contractuel",
+        declencheur=_du_type(AlertType.THRESHOLD),
+        motif=lambda alerte: f"Seuil de consommation dépassé sur le site {alerte.site_id}",
+    ),
+    Regle(
+        reference="outage-secours-v1",
+        action="Basculer sur l'alimentation de secours et prévenir l'exploitant",
+        declencheur=_du_type(AlertType.OUTAGE),
+        motif=lambda alerte: (
+            f"Risque de surcharge ou de coupure imminente sur le site {alerte.site_id}"
+        ),
+    ),
+    Regle(
+        reference="sensor-maintenance-v1",
+        action="Planifier une intervention de maintenance sur le capteur",
+        declencheur=_du_type(AlertType.SENSOR),
+        motif=lambda alerte: (
+            f"Capteur défaillant sur le site {alerte.site_id}, les mesures ne sont plus fiables"
+        ),
+    ),
+    Regle(
+        reference="anomaly-verification-v1",
+        action="Confronter la mesure à la prévision et vérifier le paramétrage du site",
+        declencheur=_du_type(AlertType.ANOMALY),
+        motif=lambda alerte: (
+            f"Écart anormal entre la mesure et le comportement attendu du site {alerte.site_id}"
+        ),
+    ),
+    Regle(
+        reference="escalade-astreinte-v1",
+        action="Escalader à l'astreinte sous une heure",
+        declencheur=_de_severite(AlertSeverity.CRITICAL),
+        motif=lambda alerte: f"Alerte de sévérité critique sur le site {alerte.site_id}",
+    ),
+    Regle(
+        reference="contrat-puissance-v1",
+        action="Réévaluer la puissance souscrite au contrat",
+        declencheur=_depasse_largement_le_seuil,
+        motif=lambda alerte: (
+            f"Dépassement d'au moins {POURCENTAGE_DEPASSEMENT_MAJEUR} % du seuil "
+            f"sur le site {alerte.site_id}"
+        ),
+    ),
+)
+
+
+def applique_les_regles(alerte: Alert) -> list[NouvelleRecommandation]:
+    contexte = _contexte_de_mesure(alerte)
+    return [
+        NouvelleRecommandation(
+            alert_id=alerte.alert_id,
+            action=regle.action,
+            explanation=f"{regle.motif(alerte)}{contexte}.",
+            rule_reference=regle.reference,
+        )
+        for regle in REGLES
+        if regle.declencheur(alerte)
+    ]
+
+
+def _contexte_de_mesure(alerte: Alert) -> str:
+    if alerte.value is None:
+        return ""
+    grandeur = alerte.metric or "valeur"
+    if alerte.threshold is None:
+        return f" ({grandeur} mesurée à {alerte.value})"
+    return f" ({grandeur} mesurée à {alerte.value}, seuil {alerte.threshold})"

apps/backend/openapi.json

@@ -1453,6 +1453,90 @@
         }
       }
     },
+    "/api/v1/recommendations/generate": {
+      "post": {
+        "tags": [
+          "recommendations"
+        ],
+        "summary": "Génère les recommandations à partir des alertes",
+        "operationId": "generate_recommendations_api_v1_recommendations_generate_post",
+        "security": [
+          {
+            "Jeton d'accès": []
+          }
+        ],
+        "parameters": [
+          {
+            "name": "site_id",
+            "in": "query",
+            "required": false,
+            "schema": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "title": "Site Id"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/RecommendationGenerationResponse"
+                }
+              }
+            }
+          },
+          "500": {
+            "description": "Erreur interne. `correlation` identifie la trace côté serveur, qui n'est pas renvoyée au client.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$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": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "403": {
+            "description": "Droits insuffisants, ou mot de passe provisoire à changer quand `detail` vaut `password_change_required`.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$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": {
+                  "$ref": "#/components/schemas/ValidationErrorResponse"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/api/v1/stats/summary": {
       "get": {
         "tags": [
@@ -1719,6 +1803,62 @@
           }
         ]
       }
+    },
+    "/api/v1/predictions": {
+      "get": {
+        "tags": [
+          "predictions"
+        ],
+        "summary": "Dernière prédiction de consommation par site",
+        "operationId": "get_predictions_api_v1_predictions_get",
+        "responses": {
+          "200": {
+            "description": "Successful Response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$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": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          }
+        },
+        "security": [
+          {
+            "Jeton d'accès": []
+          }
+        ]
+      }
     }
   },
   "components": {
@@ -1972,6 +2112,45 @@
         ],
         "title": "PasswordChangeRequest"
       },
+      "PredictionStatus": {
+        "type": "string",
+        "enum": [
+          "available",
+          "insufficient_data",
+          "error"
+        ],
+        "title": "PredictionStatus"
+      },
+      "PredictionSummaryResponse": {
+        "properties": {
+          "timestamp": {
+            "type": "string",
+            "format": "date-time",
+            "title": "Timestamp"
+          },
+          "sites": {
+            "items": {
+              "$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": {
@@ -2249,6 +2428,29 @@
         ],
         "title": "ReadingSource"
       },
+      "RecommendationGenerationResponse": {
+        "properties": {
+          "alerts_examined": {
+            "type": "integer",
+            "title": "Alerts Examined"
+          },
+          "recommendations_created": {
+            "type": "integer",
+            "title": "Recommendations Created"
+          },
+          "already_present": {
+            "type": "integer",
+            "title": "Already Present"
+          }
+        },
+        "type": "object",
+        "required": [
+          "alerts_examined",
+          "recommendations_created",
+          "already_present"
+        ],
+        "title": "RecommendationGenerationResponse"
+      },
       "RecommendationResponse": {
         "properties": {
           "recommendation_id": {
@@ -2518,6 +2720,104 @@
         ],
         "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": {
@@ -2960,7 +3260,7 @@
     },
     {
       "name": "recommendations",
-      "description": "Consultation des recommandations issues des alertes. Accessible à partir du rôle `lecteur`."
+      "description": "Consultation des recommandations issues des alertes. Accessible à partir du rôle `lecteur`. Leur génération par le moteur de règles est réservée au rôle `admin`."
     },
     {
       "name": "stats",
@@ -2973,6 +3273,10 @@
     {
       "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 +1,88 @@
+# 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,
+    ("POST", "/api/v1/recommendations/generate"): Role.ADMIN,
+    ("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"}
 
@@ -24,21 +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 = {
-    ("GET", "/api/v1/users"),
-    ("POST", "/api/v1/users"),
-    ("PATCH", "/api/v1/users/{id}"),
-    ("POST", "/api/v1/users/{id}/password-reset"),
-    ("GET", "/api/v1/sites"),
-    ("GET", "/api/v1/sites/{site_id}"),
-    ("GET", "/api/v1/sites/{site_id}/current"),
-    ("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"),
-}
+# Piège : cette liste était recopiée ici, et deux de ses entrées portaient `{id}` là où le contrat
+# expose `{user_id}`. Elles ne correspondaient donc à aucune opération, et le test ci-dessous
+# passait au vert sans rien vérifier sur ces deux routes. Elle est maintenant dérivée, et
+# `test_every_declared_route_is_classified` interdit l'entrée morte.
+ROUTES_A_ROLE = frozenset(ROLE_MINIMUM)
 
 
 @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_recommendations.py

@@ -10,7 +10,7 @@ from app.api.deps import get_current_principal, get_recommendation_service
 from app.core.principal import Principal
 from app.core.roles import AccountKind, Role
 from app.models.energy import Recommendation
-from app.services.recommendation import RecommendationNotFoundError
+from app.services.recommendation import RapportGeneration, RecommendationNotFoundError
 
 MOMENT = datetime(2024, 1, 1, tzinfo=UTC)
 
@@ -40,6 +40,7 @@ class FauxService:
     def __init__(self, erreur: Exception | None = None) -> None:
         self._erreur = erreur
         self.recommendation = recommendation()
+        self.site_demande: str | None = None
 
     async def list_all(self) -> list[Recommendation]:
         return [self.recommendation]
@@ -49,6 +50,10 @@ class FauxService:
             raise self._erreur
         return self.recommendation
 
+    async def generate(self, *, site_id: str | None = None) -> RapportGeneration:
+        self.site_demande = site_id
+        return RapportGeneration(alertes_examinees=2, recommandations_creees=3, deja_presentes=1)
+
 
 @pytest.fixture
 def lecteur_connecte(app: FastAPI) -> Iterator[None]:
@@ -142,3 +147,56 @@ async def test_get_recommendation_returns_404_when_the_session_finds_nothing(
     response = await client.get("/api/v1/recommendations/404")
 
     assert response.status_code == 404
+
+
+@pytest.fixture
+def admin_connecte(app: FastAPI) -> Iterator[None]:
+    app.dependency_overrides[get_current_principal] = lambda: principal(Role.ADMIN)
+    yield
+    app.dependency_overrides.pop(get_current_principal, None)
+
+
+@pytest.fixture
+def servi_en_admin(app: FastAPI, admin_connecte: None) -> Iterator[Callable[[], FauxService]]:
+    def installe() -> FauxService:
+        service = FauxService()
+        app.dependency_overrides[get_recommendation_service] = lambda: service
+        return service
+
+    yield installe
+    app.dependency_overrides.pop(get_recommendation_service, None)
+
+
+async def test_generate_recommendations_returns_the_generation_report(
+    servi_en_admin: Callable[[], FauxService], client: AsyncClient
+) -> None:
+    servi_en_admin()
+
+    response = await client.post("/api/v1/recommendations/generate")
+
+    assert response.status_code == 200
+    assert response.json() == {
+        "alerts_examined": 2,
+        "recommendations_created": 3,
+        "already_present": 1,
+    }
+
+
+async def test_generate_recommendations_forwards_the_requested_site(
+    servi_en_admin: Callable[[], FauxService], client: AsyncClient
+) -> None:
+    service = servi_en_admin()
+
+    await client.post("/api/v1/recommendations/generate", params={"site_id": "SITE002"})
+
+    assert service.site_demande == "SITE002"
+
+
+async def test_generate_recommendations_refuses_a_reader(
+    servi: Callable[..., FauxService], client: AsyncClient
+) -> None:
+    servi()
+
+    response = await client.post("/api/v1/recommendations/generate")
+
+    assert response.status_code == 403

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
-# demande une justification au relecteur.
+# `ROUTES_PUBLIQUES` dans `tests/api/acces.py`, ce qui apparaît en clair dans la diff d'une pull
+# 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(
-    {
-        ("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"),
-    }
+from tests.api.acces import (
+    ROLE_MINIMUM,
+    ROUTE_COOKIE,
+    ROUTES_PUBLIQUES,
+    ROUTES_SANS_ROLE,
+    Route,
+    chemin_concret,
+    routes_du_schema,
 )
 
-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 [
-        (methode.upper(), chemin)
-        for chemin, operations in schema["paths"].items()
-        for methode in operations
-        if methode.upper() in {"GET", "POST", "PATCH", "PUT", "DELETE"}
-    ]
+    return routes_du_schema(schema)
 
 
-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, concret, json={})
+        response = await client.request(methode, chemin_concret(chemin), json={})
         if response.status_code not in STATUTS_DE_REFUS:
             ouvertes.append((methode, chemin, response.status_code))
 
@@ -95,4 +101,5 @@ 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/db/test_data_schema.py

@@ -112,8 +112,10 @@ async def test_duplicate_reading_is_rejected_when_key_matches(
     )
     await data_connection.execute(statement)
 
+    savepoint = data_connection.begin_nested()
+
     with pytest.raises(IntegrityError):
-        async with data_connection.begin_nested():
+        async with savepoint:
             await data_connection.execute(statement)
 
 
@@ -147,9 +149,12 @@ async def test_invalid_reading_is_rejected_when_constraints_fail(
     }
     values.update(changes)
 
+    statement = insert(Reading).values(**values)
+    savepoint = data_connection.begin_nested()
+
     with pytest.raises(IntegrityError):
-        async with data_connection.begin_nested():
-            await data_connection.execute(insert(Reading).values(**values))
+        async with savepoint:
+            await data_connection.execute(statement)
 
 
 async def test_prediction_requires_period_when_energy_is_predicted(
@@ -164,8 +169,10 @@ async def test_prediction_requires_period_when_energy_is_predicted(
         model_reference="test-model/1",
     )
 
+    savepoint = data_connection.begin_nested()
+
     with pytest.raises(IntegrityError):
-        async with data_connection.begin_nested():
+        async with savepoint:
             await data_connection.execute(statement)
 
 
@@ -212,21 +219,22 @@ async def test_alert_rejects_prediction_when_site_differs(
         )
     ).scalar_one()
 
+    statement = insert(Alert).values(
+        source_alert_id=str(uuid4()),
+        site_id=other_site,
+        source="enervision",
+        timestamp=MOMENT,
+        type="spike",
+        severity="high",
+        message="Test",
+        prediction_id=prediction_id,
+        raw_data={},
+    )
+    savepoint = data_connection.begin_nested()
+
     with pytest.raises(IntegrityError):
-        async with data_connection.begin_nested():
-            await data_connection.execute(
-                insert(Alert).values(
-                    source_alert_id=str(uuid4()),
-                    site_id=other_site,
-                    source="enervision",
-                    timestamp=MOMENT,
-                    type="spike",
-                    severity="high",
-                    message="Test",
-                    prediction_id=prediction_id,
-                    raw_data={},
-                )
-            )
+        async with savepoint:
+            await data_connection.execute(statement)
 
 
 async def test_recommendation_is_unique_when_alert_and_rule_match(
@@ -256,6 +264,8 @@ async def test_recommendation_is_unique_when_alert_and_rule_match(
     )
     await data_connection.execute(statement)
 
+    savepoint = data_connection.begin_nested()
+
     with pytest.raises(IntegrityError):
-        async with data_connection.begin_nested():
+        async with savepoint:
             await data_connection.execute(statement)

apps/backend/tests/etl/test_historical_import.py

@@ -1,239 +1,245 @@
-import hashlib
-import json
-
-import pandas as pd
-import pytest
-
-from app.etl.historical_import import (
-    SOURCE_NAME,
-    build_reading_batch,
-    classify_quality,
-    compute_sha256,
-    load_metadata,
-    normalize_timestamps,
-    validate_source,
-)
-
-
-def make_metadata() -> dict:
-    return {
-        "total_records": 2,
-        "sites": {
-            "SITE001": {},
-        },
-    }
-
-
-def make_dataframe() -> pd.DataFrame:
-    return pd.DataFrame(
-        [
-            {
-                "timestamp": "2023-01-01 00:00:00",
-                "site_id": "SITE001",
-                "site_type": "office",
-                "site_name": "Site 1",
-                "consumption_kwh": 10.5,
-                "consumption_euros": 2.5,
-                "temperature_celsius": 20.0,
-                "humidity_percent": 50.0,
-                "solar_irradiance_wm2": 0.0,
-                "hour": 0,
-                "day_of_week": 6,
-                "day_name": "Sunday",
-                "month": 1,
-                "is_weekend": True,
-                "is_working_hours": False,
-            },
-            {
-                "timestamp": "2023-01-01 01:00:00",
-                "site_id": "SITE001",
-                "site_type": "office",
-                "site_name": "Site 1",
-                "consumption_kwh": 11.0,
-                "consumption_euros": 2.7,
-                "temperature_celsius": 19.5,
-                "humidity_percent": 52.0,
-                "solar_irradiance_wm2": 0.0,
-                "hour": 1,
-                "day_of_week": 6,
-                "day_name": "Sunday",
-                "month": 1,
-                "is_weekend": True,
-                "is_working_hours": False,
-            },
-        ]
-    )
-
-
-def test_compute_sha256(tmp_path):
-    file_path = tmp_path / "dataset.csv"
-    content = b"hello-enervision"
-
-    file_path.write_bytes(content)
-
-    expected = hashlib.sha256(content).hexdigest()
-
-    assert compute_sha256(file_path) == expected
-
-
-def test_load_metadata(tmp_path):
-    metadata_path = tmp_path / "metadata.json"
-
-    metadata = {
-        "total_records": 2,
-        "sites": {
-            "SITE001": {},
-        },
-    }
-
-    metadata_path.write_text(
-        json.dumps(metadata),
-        encoding="utf-8",
-    )
-
-    assert load_metadata(metadata_path) == metadata
-
-
-def test_validate_source_accepts_valid_dataset():
-    frame = make_dataframe()
-
-    validate_source(
-        frame,
-        make_metadata(),
-    )
-
-
-def test_validate_source_rejects_missing_column():
-    frame = make_dataframe().drop(columns=["consumption_kwh"])
-
-    with pytest.raises(
-        ValueError,
-        match="Colonnes obligatoires absentes",
-    ):
-        validate_source(
-            frame,
-            make_metadata(),
-        )
-
-
-def test_validate_source_rejects_duplicates():
-    frame = make_dataframe()
-
-    frame.loc[1, "timestamp"] = frame.loc[
-        0,
-        "timestamp",
-    ]
-
-    with pytest.raises(
-        ValueError,
-        match="doublons",
-    ):
-        validate_source(
-            frame,
-            make_metadata(),
-        )
-
-
-def test_validate_source_rejects_unknown_site():
-    frame = make_dataframe()
-
-    frame.loc[1, "site_id"] = "SITE999"
-
-    with pytest.raises(
-        ValueError,
-        match="Sites incohérents",
-    ):
-        validate_source(
-            frame,
-            make_metadata(),
-        )
-
-
-def test_normalize_timestamps_adds_timezone():
-    frame = make_dataframe()
-
-    normalized = normalize_timestamps(
-        frame,
-        "UTC",
-    )
-
-    assert normalized["timestamp"].dt.tz is not None
-
-    assert "_source_timestamp" in normalized.columns
-
-
-def test_classify_quality_good():
-    row = make_dataframe().iloc[0].to_dict()
-
-    quality, reasons = classify_quality(row)
-
-    assert quality == "good"
-    assert reasons == []
-
-
-def test_classify_quality_degraded_when_consumption_missing():
-    row = make_dataframe().iloc[0].to_dict()
-    row["consumption_kwh"] = None
-
-    quality, reasons = classify_quality(row)
-
-    assert quality == "degraded"
-
-    assert "missing:consumption_kwh" in reasons
-
-
-def test_build_reading_batch_respects_database_contract():
-    frame = normalize_timestamps(
-        make_dataframe(),
-        "UTC",
-    )
-
-    rows = build_reading_batch(
-        frame.iloc[:1],
-        dataset_id=3,
-    )
-
-    assert len(rows) == 1
-
-    row = rows[0]
-
-    assert row["dataset_id"] == 3
-
-    # Important :
-    # contrainte ck_reading_dataset_source.
-    assert row["source"] == "csv"
-    assert SOURCE_NAME == "csv"
-
-    # Important :
-    # contrainte ck_reading_imputation.
-    assert row["imputed_values"] is None
-    assert row["imputation_method"] is None
-
-    assert row["data_quality"] == "good"
-    assert row["null_reasons"] == []
-
-
-def test_build_reading_batch_keeps_missing_values():
-    frame = make_dataframe()
-
-    frame.loc[0, "temperature_celsius"] = None
-
-    frame = normalize_timestamps(
-        frame,
-        "UTC",
-    )
-
-    rows = build_reading_batch(
-        frame.iloc[:1],
-        dataset_id=3,
-    )
-
-    row = rows[0]
-
-    assert row["temperature_celsius"] is None
-
-    assert "missing:temperature_celsius" in row["null_reasons"]
-
-    # RAW ingestion : aucune imputation.
-    assert row["imputed_values"] is None
-    assert row["imputation_method"] is None
+import hashlib
+import json
+
+import pandas as pd
+import pytest
+
+from app.etl.historical_import import (
+    SOURCE_NAME,
+    build_reading_batch,
+    classify_quality,
+    compute_sha256,
+    load_metadata,
+    normalize_timestamps,
+    validate_source,
+)
+
+
+def make_metadata() -> dict:
+    return {
+        "total_records": 2,
+        "sites": {
+            "SITE001": {},
+        },
+    }
+
+
+def make_dataframe() -> pd.DataFrame:
+    return pd.DataFrame(
+        [
+            {
+                "timestamp": "2023-01-01 00:00:00",
+                "site_id": "SITE001",
+                "site_type": "office",
+                "site_name": "Site 1",
+                "consumption_kwh": 10.5,
+                "consumption_euros": 2.5,
+                "temperature_celsius": 20.0,
+                "humidity_percent": 50.0,
+                "solar_irradiance_wm2": 0.0,
+                "hour": 0,
+                "day_of_week": 6,
+                "day_name": "Sunday",
+                "month": 1,
+                "is_weekend": True,
+                "is_working_hours": False,
+            },
+            {
+                "timestamp": "2023-01-01 01:00:00",
+                "site_id": "SITE001",
+                "site_type": "office",
+                "site_name": "Site 1",
+                "consumption_kwh": 11.0,
+                "consumption_euros": 2.7,
+                "temperature_celsius": 19.5,
+                "humidity_percent": 52.0,
+                "solar_irradiance_wm2": 0.0,
+                "hour": 1,
+                "day_of_week": 6,
+                "day_name": "Sunday",
+                "month": 1,
+                "is_weekend": True,
+                "is_working_hours": False,
+            },
+        ]
+    )
+
+
+def test_compute_sha256(tmp_path):
+    file_path = tmp_path / "dataset.csv"
+    content = b"hello-enervision"
+
+    file_path.write_bytes(content)
+
+    expected = hashlib.sha256(content).hexdigest()
+
+    assert compute_sha256(file_path) == expected
+
+
+def test_load_metadata(tmp_path):
+    metadata_path = tmp_path / "metadata.json"
+
+    metadata = {
+        "total_records": 2,
+        "sites": {
+            "SITE001": {},
+        },
+    }
+
+    metadata_path.write_text(
+        json.dumps(metadata),
+        encoding="utf-8",
+    )
+
+    assert load_metadata(metadata_path) == metadata
+
+
+def test_validate_source_accepts_valid_dataset():
+    frame = make_dataframe()
+
+    validate_source(
+        frame,
+        make_metadata(),
+    )
+
+
+def test_validate_source_rejects_missing_column():
+    frame = make_dataframe().drop(columns=["consumption_kwh"])
+
+    metadata = make_metadata()
+
+    with pytest.raises(
+        ValueError,
+        match="Colonnes obligatoires absentes",
+    ):
+        validate_source(
+            frame,
+            metadata,
+        )
+
+
+def test_validate_source_rejects_duplicates():
+    frame = make_dataframe()
+
+    frame.loc[1, "timestamp"] = frame.loc[
+        0,
+        "timestamp",
+    ]
+
+    metadata = make_metadata()
+
+    with pytest.raises(
+        ValueError,
+        match="doublons",
+    ):
+        validate_source(
+            frame,
+            metadata,
+        )
+
+
+def test_validate_source_rejects_unknown_site():
+    frame = make_dataframe()
+
+    frame.loc[1, "site_id"] = "SITE999"
+
+    metadata = make_metadata()
+
+    with pytest.raises(
+        ValueError,
+        match="Sites incohérents",
+    ):
+        validate_source(
+            frame,
+            metadata,
+        )
+
+
+def test_normalize_timestamps_adds_timezone():
+    frame = make_dataframe()
+
+    normalized = normalize_timestamps(
+        frame,
+        "UTC",
+    )
+
+    assert normalized["timestamp"].dt.tz is not None
+
+    assert "_source_timestamp" in normalized.columns
+
+
+def test_classify_quality_good():
+    row = make_dataframe().iloc[0].to_dict()
+
+    quality, reasons = classify_quality(row)
+
+    assert quality == "good"
+    assert reasons == []
+
+
+def test_classify_quality_degraded_when_consumption_missing():
+    row = make_dataframe().iloc[0].to_dict()
+    row["consumption_kwh"] = None
+
+    quality, reasons = classify_quality(row)
+
+    assert quality == "degraded"
+
+    assert "missing:consumption_kwh" in reasons
+
+
+def test_build_reading_batch_respects_database_contract():
+    frame = normalize_timestamps(
+        make_dataframe(),
+        "UTC",
+    )
+
+    rows = build_reading_batch(
+        frame.iloc[:1],
+        dataset_id=3,
+    )
+
+    assert len(rows) == 1
+
+    row = rows[0]
+
+    assert row["dataset_id"] == 3
+
+    # Important :
+    # contrainte ck_reading_dataset_source.
+    assert row["source"] == "csv"
+    assert SOURCE_NAME == "csv"
+
+    # Important :
+    # contrainte ck_reading_imputation.
+    assert row["imputed_values"] is None
+    assert row["imputation_method"] is None
+
+    assert row["data_quality"] == "good"
+    assert row["null_reasons"] == []
+
+
+def test_build_reading_batch_keeps_missing_values():
+    frame = make_dataframe()
+
+    frame.loc[0, "temperature_celsius"] = None
+
+    frame = normalize_timestamps(
+        frame,
+        "UTC",
+    )
+
+    rows = build_reading_batch(
+        frame.iloc[:1],
+        dataset_id=3,
+    )
+
+    row = rows[0]
+
+    assert row["temperature_celsius"] is None
+
+    assert "missing:temperature_celsius" in row["null_reasons"]
+
+    # RAW ingestion : aucune imputation.
+    assert row["imputed_values"] is None
+    assert row["imputation_method"] is None

apps/backend/tests/etl/test_mock_api_import.py

@@ -0,0 +1,834 @@
+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 (
+    MAX_SITES,
+    READING_INSERT,
+    SOURCE_HISTORY,
+    build_reading_batch,
+    build_reading_row,
+    build_site_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_sites_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/sites doit être une liste",
+        ):
+            await fetch_sites(client)
+
+
+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,
+    )
+
+
+async def test_fetch_sites_rejects_a_response_above_the_cap() -> None:
+    def handler(request: Request) -> Response:
+        return Response(
+            status_code=200,
+            json=[make_site() for _ in range(MAX_SITES + 1)],
+        )
+
+    transport = MockTransport(handler)
+
+    async with AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    ) as client:
+        with pytest.raises(
+            ValueError,
+            match=f"dépasse le plafond de {MAX_SITES} sites",
+        ):
+            await fetch_sites(client)
+
+
+async def test_fetch_readings_rejects_a_response_above_the_requested_limit() -> None:
+    def handler(request: Request) -> Response:
+        return Response(
+            status_code=200,
+            json=[make_reading(), make_reading(), make_reading()],
+        )
+
+    transport = MockTransport(handler)
+
+    async with AsyncClient(
+        transport=transport,
+        base_url="https://mock.test",
+    ) as client:
+        with pytest.raises(
+            ValueError,
+            match="dépasse la limite demandée de 2",
+        ):
+            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=2,
+            )
+
+
+def test_build_reading_row_neutralises_values_outside_physical_bounds() -> None:
+    reading = make_reading()
+
+    reading["power_factor"] = 42.0
+    reading["temperature_celsius"] = 1e30
+    reading["humidity_percent"] = -1.0
+
+    row = build_reading_row(reading)
+
+    assert row["power_factor"] is None
+    assert row["temperature_celsius"] is None
+    assert row["humidity_percent"] is None
+
+    assert row["null_reasons"] == [
+        "out_of_physical_bounds:power_factor",
+        "out_of_physical_bounds:temperature_celsius",
+        "out_of_physical_bounds:humidity_percent",
+    ]
+
+    assert row["data_quality"] == "degraded"
+
+    assert json.loads(row["raw_data"])["power_factor"] == 42.0
+
+
+def test_build_reading_row_rejects_a_measure_that_is_not_a_number() -> None:
+    reading = make_reading()
+
+    reading["consumption_kw"] = "87.34"
+
+    row = build_reading_row(reading)
+
+    assert row["consumption_kw"] is None
+    assert "out_of_physical_bounds:consumption_kw" in row["null_reasons"]
+
+
+def test_build_reading_row_drops_a_quality_the_database_refuses() -> None:
+    reading = make_reading()
+
+    reading["data_quality"] = "unknown"
+
+    row = build_reading_row(reading)
+
+    assert row["data_quality"] is None
+
+
+def test_build_reading_row_requires_an_identifier() -> None:
+    reading = make_reading()
+
+    del reading["site_id"]
+
+    with pytest.raises(
+        ValueError,
+        match="Champ site_id absent ou invalide",
+    ):
+        build_reading_row(reading)
+
+
+def test_build_site_row_keeps_only_the_expected_columns() -> None:
+    site = make_site()
+
+    site["unexpected"] = "valeur hostile"
+    site["capacity_kw"] = -5.0
+    site["status"] = 12
+
+    row = build_site_row(site)
+
+    assert set(row) == {
+        "site_id",
+        "site_type",
+        "site_name",
+        "location",
+        "capacity_kw",
+        "status",
+    }
+
+    assert row["capacity_kw"] is None
+    assert row["status"] is None
+
+
+async def test_upsert_sites_sends_only_the_expected_columns() -> None:
+    connection = AsyncMock()
+
+    site = make_site()
+    site["unexpected"] = "valeur hostile"
+
+    await upsert_sites(
+        connection,
+        [site],
+    )
+
+    rows = connection.execute.await_args.args[1]
+
+    assert "unexpected" not in rows[0]
+    assert rows[0]["site_id"] == "SITE001"
+
+
+@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()
+
+
+@pytest.mark.integration
+async def test_out_of_bounds_reading_is_stored_neutralised(
+    session: AsyncSession,
+) -> None:
+    reading = make_reading()
+    reading["power_factor"] = 42.0
+
+    row = build_reading_row(reading)
+
+    connection = await session.connection()
+
+    await upsert_sites(
+        connection,
+        [make_site()],
+    )
+
+    await session.execute(
+        READING_INSERT,
+        [row],
+    )
+
+    result = await session.execute(
+        text(
+            """
+            SELECT power_factor, data_quality, null_reasons, raw_data ->> 'power_factor'
+            FROM reading
+            WHERE site_id = :site_id
+              AND timestamp = :timestamp
+              AND source = :source
+            """
+        ),
+        {
+            "site_id": row["site_id"],
+            "timestamp": row["timestamp"],
+            "source": row["source"],
+        },
+    )
+
+    stored = result.one()
+
+    await session.rollback()
+
+    assert stored[0] is None
+    assert stored[1] == "degraded"
+    assert stored[2] == ["out_of_physical_bounds:power_factor"]
+    assert stored[3] == "42.0"

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_audit_log.py

@@ -49,8 +49,10 @@ async def test_the_database_refuses_to_mutate_the_audit_log(
 ) -> None:
     await une_ligne(session)
 
+    requete = text(instruction)
+
     with pytest.raises(DBAPIError, match="ajout seul"):
-        await session.execute(text(instruction))
+        await session.execute(requete)
     await session.rollback()
 
 

apps/backend/tests/repositories/test_password_reset_token.py

@@ -131,11 +131,14 @@ async def test_the_database_refuses_two_tokens_sharing_a_fingerprint(
         user_agent=None,
     )
 
+    empreinte = fingerprint_refresh(secret)
+    expiration = datetime.now(UTC) + DUREE
+
     with pytest.raises(IntegrityError):
         await depot.create(
             user_id=compte,
-            token_hash=fingerprint_refresh(secret),
-            expires_at=datetime.now(UTC) + DUREE,
+            token_hash=empreinte,
+            expires_at=expiration,
             client_ip=None,
             user_agent=None,
         )

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

@@ -155,6 +155,79 @@ async def test_latest_for_site_ignores_the_readings_of_the_other_sites(
     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/repositories/test_recommendation.py

@@ -5,7 +5,8 @@ import pytest
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.models.energy import Alert, Recommendation, Site
-from app.repositories.recommendation import RecommendationRepository
+from app.repositories import recommendation as module_recommendation
+from app.repositories.recommendation import NouvelleRecommandation, RecommendationRepository
 
 pytestmark = pytest.mark.integration
 
@@ -83,3 +84,59 @@ async def test_list_all_returns_the_recommendations_sorted_by_identifier(
     await session.rollback()
 
     assert identifiants == sorted(identifiants)
+
+
+def nouvelle(alert_id: int, reference: str = "spike-delestage-v1") -> NouvelleRecommandation:
+    return NouvelleRecommandation(
+        alert_id=alert_id,
+        action="Délester les équipements non prioritaires",
+        explanation="Pic de consommation signalé.",
+        rule_reference=reference,
+    )
+
+
+async def test_create_missing_inserts_the_proposals(session: AsyncSession) -> None:
+    depot = RecommendationRepository(session)
+    alert_id = await creer_alerte(session)
+
+    creees = await depot.create_missing(
+        [nouvelle(alert_id), nouvelle(alert_id, "escalade-astreinte-v1")]
+    )
+    await session.rollback()
+
+    assert creees == 2
+
+
+async def test_create_missing_ignores_a_rule_already_held_for_the_alert(
+    session: AsyncSession,
+) -> None:
+    depot = RecommendationRepository(session)
+    alert_id = await creer_alerte(session)
+    await depot.create_missing([nouvelle(alert_id)])
+
+    creees = await depot.create_missing([nouvelle(alert_id)])
+    await session.rollback()
+
+    assert creees == 0
+
+
+async def test_create_missing_returns_zero_without_any_proposal(session: AsyncSession) -> None:
+    creees = await RecommendationRepository(session).create_missing([])
+
+    assert creees == 0
+
+
+async def test_create_missing_inserts_every_proposal_across_several_batches(
+    session: AsyncSession, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr(module_recommendation, "TAILLE_DE_LOT", 2)
+    depot = RecommendationRepository(session)
+    alert_id = await creer_alerte(session)
+    propositions = [nouvelle(alert_id, f"regle-{index}-v1") for index in range(5)]
+
+    creees = await depot.create_missing(propositions)
+    enregistrees = [r for r in await depot.list_all() if r.alert_id == alert_id]
+    await session.rollback()
+
+    assert creees == 5
+    assert len(enregistrees) == 5

apps/backend/tests/repositories/test_refresh_token.py

@@ -178,12 +178,16 @@ async def test_the_database_refuses_two_tokens_sharing_a_fingerprint(
         user_agent=None,
     )
 
+    famille = uuid.uuid4()
+    empreinte = fingerprint_refresh(secret)
+    expiration = datetime.now(UTC) + DUREE
+
     with pytest.raises(IntegrityError):
         await depot.create(
             user_id=compte,
-            family_id=uuid.uuid4(),
-            token_hash=fingerprint_refresh(secret),
-            expires_at=datetime.now(UTC) + DUREE,
+            family_id=famille,
+            token_hash=empreinte,
+            expires_at=expiration,
             client_ip=None,
             user_agent=None,
         )

apps/backend/tests/repositories/test_user.py

@@ -31,14 +31,12 @@ async def test_the_database_refuses_an_email_written_in_upper_case(
 ) -> None:
     saisie = adresse().upper()
 
+    requete = text(
+        "insert into app_user (email, password_hash, role) values (:e, '$argon2id$x', 'lecteur')"
+    )
+
     with pytest.raises(IntegrityError):
-        await session.execute(
-            text(
-                "insert into app_user (email, password_hash, role) "
-                "values (:e, '$argon2id$x', 'lecteur')"
-            ),
-            {"e": saisie},
-        )
+        await session.execute(requete, {"e": saisie})
     await session.rollback()
 
 

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_reading.py

@@ -116,13 +116,11 @@ async def test_list_history_normalizes_naive_datetimes_to_utc() -> None:
 async def test_list_history_raises_when_start_is_after_end() -> None:
     service = ReadingService(readings=FakeRepository([]))
 
+    debut = datetime(2026, 9, 2, tzinfo=UTC)
+    fin = datetime(2026, 9, 1, tzinfo=UTC)
+
     with pytest.raises(FenetreInverseeError):
-        await service.list_history(
-            start=datetime(2026, 9, 2, tzinfo=UTC),
-            end=datetime(2026, 9, 1, tzinfo=UTC),
-            limit=500,
-            offset=0,
-        )
+        await service.list_history(start=debut, end=fin, limit=500, offset=0)
 
 
 async def test_list_history_raises_when_start_equals_end() -> None:

apps/backend/tests/services/test_recommendation.py

@@ -1,10 +1,14 @@
+from collections.abc import Sequence
 from datetime import UTC, datetime
 
 import pytest
 
-from app.models.energy import Recommendation
+from app.models.energy import Alert, Recommendation
+from app.repositories.recommendation import NouvelleRecommandation
 from app.services.recommendation import RecommendationNotFoundError, RecommendationService
 
+MOMENT = datetime(2024, 1, 1, tzinfo=UTC)
+
 
 def recommendation(recommendation_id: int = 1) -> Recommendation:
     return Recommendation(
@@ -13,13 +17,33 @@ def recommendation(recommendation_id: int = 1) -> Recommendation:
         action="Vérifier la consommation",
         explanation="Pic détecté",
         rule_reference="spike-v1",
-        created_at=datetime(2024, 1, 1, tzinfo=UTC),
+        created_at=MOMENT,
+    )
+
+
+def alerte(alert_id: int = 1, site_id: str = "SITE001", severity: str = "high") -> Alert:
+    return Alert(
+        alert_id=alert_id,
+        source_alert_id=f"ALR-{alert_id}",
+        site_id=site_id,
+        source="api_mock",
+        timestamp=MOMENT,
+        type="spike",
+        severity=severity,
+        message="Pic de consommation",
+        value=None,
+        threshold=None,
+        metric=None,
+        prediction_id=None,
+        raw_data={},
     )
 
 
 class FakeRepository:
-    def __init__(self, recommendations: list[Recommendation]) -> None:
+    def __init__(self, recommendations: list[Recommendation], creees: int | None = None) -> None:
         self._recommendations = recommendations
+        self._creees = creees
+        self.recues: list[NouvelleRecommandation] = []
 
     async def list_all(self) -> list[Recommendation]:
         return self._recommendations
@@ -29,27 +53,111 @@ class FakeRepository:
             (r for r in self._recommendations if r.recommendation_id == recommendation_id), None
         )
 
+    async def create_missing(self, nouvelles: Sequence[NouvelleRecommandation]) -> int:
+        self.recues = list(nouvelles)
+        return len(self.recues) if self._creees is None else self._creees
 
-async def test_list_all_returns_the_repository_recommendations() -> None:
-    service = RecommendationService(
-        recommendations=FakeRepository([recommendation(1), recommendation(2)])
+
+class FakeAlertRepository:
+    def __init__(self, alertes: list[Alert]) -> None:
+        self._alertes = alertes
+        self.site_demande: str | None = None
+
+    async def list_all(
+        self, *, site_id: str | None = None, severity: str | None = None
+    ) -> list[Alert]:
+        self.site_demande = site_id
+        if site_id is None:
+            return self._alertes
+        return [a for a in self._alertes if a.site_id == site_id]
+
+
+class FakeTransaction:
+    def __init__(self) -> None:
+        self.commits = 0
+
+    async def commit(self) -> None:
+        self.commits += 1
+
+
+def service(
+    recommendations: FakeRepository | None = None,
+    alerts: FakeAlertRepository | None = None,
+    transaction: FakeTransaction | None = None,
+) -> RecommendationService:
+    return RecommendationService(
+        recommendations=recommendations or FakeRepository([]),
+        alerts=alerts or FakeAlertRepository([]),
+        transaction=transaction or FakeTransaction(),
     )
 
-    recommendations = await service.list_all()
+
+async def test_list_all_returns_the_repository_recommendations() -> None:
+    depot = FakeRepository([recommendation(1), recommendation(2)])
+
+    recommendations = await service(recommendations=depot).list_all()
 
     assert [r.recommendation_id for r in recommendations] == [1, 2]
 
 
 async def test_get_by_id_returns_the_matching_recommendation() -> None:
-    service = RecommendationService(recommendations=FakeRepository([recommendation(1)]))
-
-    trouve = await service.get_by_id(1)
+    trouve = await service(recommendations=FakeRepository([recommendation(1)])).get_by_id(1)
 
     assert trouve.recommendation_id == 1
 
 
 async def test_get_by_id_raises_when_the_recommendation_is_unknown() -> None:
-    service = RecommendationService(recommendations=FakeRepository([]))
-
     with pytest.raises(RecommendationNotFoundError):
-        await service.get_by_id(404)
+        await service().get_by_id(404)
+
+
+async def test_generate_persists_one_proposal_per_triggered_rule() -> None:
+    depot = FakeRepository([])
+
+    rapport = await service(
+        recommendations=depot, alerts=FakeAlertRepository([alerte(severity="critical")])
+    ).generate()
+
+    assert {n.rule_reference for n in depot.recues} == {
+        "spike-delestage-v1",
+        "escalade-astreinte-v1",
+    }
+    assert rapport.recommandations_creees == 2
+
+
+async def test_generate_commits_once() -> None:
+    transaction = FakeTransaction()
+
+    await service(alerts=FakeAlertRepository([alerte()]), transaction=transaction).generate()
+
+    assert transaction.commits == 1
+
+
+async def test_generate_restricts_the_alerts_to_the_requested_site() -> None:
+    alertes = FakeAlertRepository([alerte(1, site_id="SITE001"), alerte(2, site_id="SITE002")])
+    depot = FakeRepository([])
+
+    rapport = await service(recommendations=depot, alerts=alertes).generate(site_id="SITE002")
+
+    assert alertes.site_demande == "SITE002"
+    assert rapport.alertes_examinees == 1
+    assert {n.alert_id for n in depot.recues} == {2}
+
+
+async def test_generate_reports_nothing_when_no_alert_matches() -> None:
+    rapport = await service().generate()
+
+    assert rapport.alertes_examinees == 0
+    assert rapport.recommandations_creees == 0
+    assert rapport.deja_presentes == 0
+
+
+async def test_generate_counts_the_proposals_the_database_already_held() -> None:
+    depot = FakeRepository([], creees=0)
+
+    rapport = await service(
+        recommendations=depot, alerts=FakeAlertRepository([alerte()])
+    ).generate()
+
+    assert rapport.recommandations_creees == 0
+    assert rapport.deja_presentes == 1

apps/backend/tests/services/test_recommendation_rules.py

@@ -0,0 +1,142 @@
+from datetime import UTC, datetime
+
+import pytest
+
+from app.models.energy import Alert
+from app.services.recommendation_rules import FACTEUR_DEPASSEMENT_MAJEUR, applique_les_regles
+
+MOMENT = datetime(2024, 1, 1, tzinfo=UTC)
+
+
+def alerte(
+    *,
+    alert_id: int = 1,
+    type_alerte: str = "spike",
+    severity: str = "high",
+    value: float | None = None,
+    threshold: float | None = None,
+    metric: str | None = None,
+    site_id: str = "SITE001",
+) -> Alert:
+    return Alert(
+        alert_id=alert_id,
+        source_alert_id=f"ALR-{alert_id}",
+        site_id=site_id,
+        source="api_mock",
+        timestamp=MOMENT,
+        type=type_alerte,
+        severity=severity,
+        message="Alerte de test",
+        value=value,
+        threshold=threshold,
+        metric=metric,
+        prediction_id=None,
+        raw_data={},
+    )
+
+
+@pytest.mark.parametrize(
+    ("type_alerte", "attendue"),
+    [
+        ("spike", "spike-delestage-v1"),
+        ("threshold", "threshold-reduction-v1"),
+        ("outage", "outage-secours-v1"),
+        ("sensor", "sensor-maintenance-v1"),
+        ("anomaly", "anomaly-verification-v1"),
+    ],
+    ids=["pic", "seuil", "coupure", "capteur", "anomalie"],
+)
+def test_each_alert_type_yields_its_own_rule(type_alerte: str, attendue: str) -> None:
+    proposees = applique_les_regles(alerte(type_alerte=type_alerte))
+
+    assert [p.rule_reference for p in proposees] == [attendue]
+
+
+def test_a_critical_alert_adds_the_escalation_rule() -> None:
+    proposees = applique_les_regles(alerte(severity="critical"))
+
+    assert "escalade-astreinte-v1" in {p.rule_reference for p in proposees}
+
+
+@pytest.mark.parametrize("severity", ["low", "medium", "high"], ids=["faible", "moyenne", "haute"])
+def test_a_non_critical_alert_does_not_escalate(severity: str) -> None:
+    proposees = applique_les_regles(alerte(severity=severity))
+
+    assert "escalade-astreinte-v1" not in {p.rule_reference for p in proposees}
+
+
+def test_a_large_overshoot_adds_the_contract_rule() -> None:
+    proposees = applique_les_regles(
+        alerte(value=720.0 * FACTEUR_DEPASSEMENT_MAJEUR, threshold=720.0)
+    )
+
+    assert "contrat-puissance-v1" in {p.rule_reference for p in proposees}
+
+
+def test_an_overshoot_below_the_factor_does_not_add_the_contract_rule() -> None:
+    proposees = applique_les_regles(alerte(value=800.0, threshold=720.0))
+
+    assert "contrat-puissance-v1" not in {p.rule_reference for p in proposees}
+
+
+@pytest.mark.parametrize(
+    ("value", "threshold"),
+    [(None, 720.0), (900.0, None), (900.0, 0.0), (900.0, -10.0)],
+    ids=["sans mesure", "sans seuil", "seuil nul", "seuil negatif"],
+)
+def test_the_contract_rule_stays_silent_without_an_exploitable_threshold(
+    value: float | None, threshold: float | None
+) -> None:
+    proposees = applique_les_regles(alerte(value=value, threshold=threshold))
+
+    assert "contrat-puissance-v1" not in {p.rule_reference for p in proposees}
+
+
+def test_the_explanation_quotes_the_measure_and_the_threshold() -> None:
+    proposees = applique_les_regles(alerte(value=812.5, threshold=720.0, metric="consumption_kw"))
+
+    assert "(consumption_kw mesurée à 812.5, seuil 720.0)" in proposees[0].explanation
+
+
+def test_the_explanation_quotes_the_measure_alone_when_no_threshold_is_known() -> None:
+    proposees = applique_les_regles(alerte(value=812.5, metric="consumption_kw"))
+
+    assert "(consumption_kw mesurée à 812.5)" in proposees[0].explanation
+
+
+def test_the_explanation_omits_the_measure_when_the_alert_carries_none() -> None:
+    proposees = applique_les_regles(alerte())
+
+    assert "(" not in proposees[0].explanation
+
+
+def test_the_explanation_names_the_site() -> None:
+    proposees = applique_les_regles(alerte(site_id="SITE042"))
+
+    assert "SITE042" in proposees[0].explanation
+
+
+def test_every_proposal_carries_the_alert_identifier() -> None:
+    proposees = applique_les_regles(alerte(alert_id=77, severity="critical"))
+
+    assert {p.alert_id for p in proposees} == {77}
+
+
+def test_an_alert_never_yields_the_same_rule_twice() -> None:
+    proposees = applique_les_regles(
+        alerte(severity="critical", value=900.0, threshold=720.0, metric="consumption_kw")
+    )
+
+    assert len(proposees) == len({p.rule_reference for p in proposees})
+
+
+def test_a_critical_alert_over_the_threshold_yields_the_three_rules() -> None:
+    proposees = applique_les_regles(
+        alerte(severity="critical", value=900.0, threshold=720.0, metric="consumption_kw")
+    )
+
+    assert {p.rule_reference for p in proposees} == {
+        "spike-delestage-v1",
+        "escalade-astreinte-v1",
+        "contrat-puissance-v1",
+    }

apps/backend/tests/services/test_user.py

@@ -235,5 +235,7 @@ async def test_every_operation_refuses_an_unknown_account(action: str) -> None:
     if action == "set_active":
         arguments["is_active"] = False
 
+    methode = getattr(attirail.service, action)
+
     with pytest.raises(UserNotFoundError):
-        await getattr(attirail.service, action)(**arguments)
+        await methode(**arguments)

apps/backend/tests/test_cli.py

@@ -19,13 +19,17 @@ def test_build_parser_reads_the_create_admin_arguments() -> None:
 
 
 def test_build_parser_requires_a_subcommand() -> None:
+    parser = cli.build_parser()
+
     with pytest.raises(SystemExit):
-        cli.build_parser().parse_args([])
+        parser.parse_args([])
 
 
 def test_build_parser_requires_an_email() -> None:
+    parser = cli.build_parser()
+
     with pytest.raises(SystemExit):
-        cli.build_parser().parse_args(["create-admin"])
+        parser.parse_args(["create-admin"])
 
 
 def test_read_password_generates_a_long_secret_when_asked(
@@ -118,3 +122,30 @@ def test_main_exports_the_contract_without_asking_for_a_password(
     assert code == 0
     assert destination.exists()
     assert str(destination) in capsys.readouterr().out
+
+
+def test_build_parser_reads_the_generate_recommendations_arguments() -> None:
+    arguments = cli.build_parser().parse_args(["generate-recommendations", "--site-id", "SITE002"])
+
+    assert arguments.commande == "generate-recommendations"
+    assert arguments.site_id == "SITE002"
+
+
+def test_build_parser_defaults_the_generation_to_every_site() -> None:
+    arguments = cli.build_parser().parse_args(["generate-recommendations"])
+
+    assert arguments.site_id is None
+
+
+def test_main_generates_the_recommendations_without_asking_for_a_password(
+    monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
+) -> None:
+    async def fausse_generation(*, site_id: str | None) -> str:
+        return f"génération lancée pour {site_id}"
+
+    monkeypatch.setattr(cli, "generate_recommendations", fausse_generation)
+
+    code = cli.main(["generate-recommendations", "--site-id", "SITE002"])
+
+    assert code == 0
+    assert "SITE002" in capsys.readouterr().out

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/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/Dockerfile

@@ -3,7 +3,7 @@
 # ==================
 
 # Image pour frontend
-FROM node:24-alpine3.22 AS builder
+FROM node:26-alpine3.22 AS builder
 
 WORKDIR /app
 

apps/frontend/angular.json

@@ -34,6 +34,11 @@
           },
           "configurations": {
             "production": {
+              "optimization": {
+                "styles": {
+                  "inlineCritical": false
+                }
+              },
               "budgets": [
                 {
                   "type": "initial",

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

@@ -21,8 +21,13 @@ export const routes: Routes = [
     path: 'sites/:siteId',
     canActivate: [authGuard],
     loadComponent: () =>
-      import('./features/sites/site-detail-placeholder/site-detail-placeholder').then(
-        (m) => m.SiteDetailPlaceholder,
-      ),
+      import('./features/sites/site-detail/site-detail').then((m) => m.SiteDetail),
+  },
+  {
+    path: 'monitoring/sensors',
+    canActivate: [authGuard],
+    data: { role: 'admin' },
+    loadComponent: () =>
+      import('./features/monitoring/sensor-status/sensor-status').then((m) => m.SensorStatusView),
   },
 ];

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/sensors.service.spec.ts

@@ -0,0 +1,48 @@
+import { TestBed } from '@angular/core/testing';
+import { provideHttpClient } from '@angular/common/http';
+import { provideHttpClientTesting, HttpTestingController } from '@angular/common/http/testing';
+import { SensorsService } from './sensors.service';
+import { environment } from '../../../environments/environment';
+
+describe('SensorsService', () => {
+  let service: SensorsService;
+  let httpMock: HttpTestingController;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: [provideHttpClient(), provideHttpClientTesting()],
+    });
+    service = TestBed.inject(SensorsService);
+    httpMock = TestBed.inject(HttpTestingController);
+  });
+
+  afterEach(() => httpMock.verify());
+
+  it("appelle l'endpoint /sensors/status et retourne la réponse", () => {
+    let result: unknown;
+    service.getStatus().subscribe((r) => (result = r));
+
+    const req = httpMock.expectOne(`${environment.apiUrl}/sensors/status`);
+    expect(req.request.method).toBe('GET');
+
+    req.flush({
+      timestamp: '2026-09-18T08:00:00',
+      sites: [
+        {
+          site_id: 'SITE001',
+          site_name: 'Test',
+          overall: 'ok',
+          sensors: {
+            consumption: { status: 'ok', since: null },
+            electrical: { status: 'ok', since: null },
+            temperature: { status: 'ok', since: null },
+            humidity: { status: 'ok', since: null },
+            network: { status: 'ok', since: null },
+          },
+        },
+      ],
+    });
+
+    expect((result as { sites: unknown[] }).sites.length).toBe(1);
+  });
+});

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

@@ -0,0 +1,13 @@
+import { Service, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { environment } from '../../../environments/environment';
+import {SensorStatusResponse} from '../../shared/models/sensor-status.model';
+
+@Service()
+export class SensorsService {
+  private http = inject(HttpClient);
+
+  getStatus() {
+    return this.http.get<SensorStatusResponse>(`${environment.apiUrl}/sensors/status`);
+  }
+}

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

@@ -38,4 +38,50 @@ describe('SitesService', () => {
 
     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

@@ -2,6 +2,7 @@ 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 {
@@ -10,4 +11,12 @@ export class SitesService {
   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/dashboard/dashboard.html

@@ -10,6 +10,9 @@
       </div>
     </div>
     <div class="dashboard__actions">
+      @if (auth.principal()?.role === 'admin') {
+        <a routerLink="/monitoring/sensors" class="ev-link">Supervision des capteurs</a>
+      }
       <a routerLink="/sites" class="ev-link">Voir les sites</a>
       <ev-button
         class="logout-button"
@@ -21,7 +24,13 @@
     </div>
   </header>
 
-  @if (error(); as message) {
+  @if (statsError(); as message) {
+    <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>
   }
 
@@ -72,4 +81,33 @@
       </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

@@ -68,6 +68,15 @@ h2 {
   text-align: center;
 }
 
+.card--link {
+  cursor: pointer;
+  transition: border-color 0.15s ease;
+
+  &:hover {
+    border-color: var(--color-primary);
+  }
+}
+
 .card__label {
   font-size: 0.8rem;
   color: var(--color-text-muted);
@@ -121,3 +130,40 @@ h2 {
 .alert-item__message {
   font-size: 0.9rem;
 }
+
+.predictions-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+.prediction-item {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.75rem;
+  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;
+}
+
+.prediction-item__value {
+  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

@@ -4,6 +4,7 @@ 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, provideRouter} from '@angular/router';
 
@@ -17,18 +18,24 @@ 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([]),
       ],
     });
@@ -42,8 +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", () => {
@@ -61,6 +72,7 @@ describe('Dashboard', () => {
       providers: [
         { provide: StatsService, useValue: statsMock },
         { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictionsMock() },
         provideRouter([]),
       ],
     });
@@ -70,13 +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", () => {
@@ -88,6 +100,7 @@ describe('Dashboard', () => {
       providers: [
         { provide: StatsService, useValue: statsMock },
         { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictionsMock() },
         provideRouter([]),
       ],
     });
@@ -96,18 +109,78 @@ describe('Dashboard', () => {
     fixture.detectChanges();
 
     expect(fixture.componentInstance.alerts().length).toBe(0);
+    expect(fixture.componentInstance.alertsError()).not.toBeNull();
+  });
+
+  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 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.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() };
-
+  const authMock = {
+    logout: vi.fn().mockReturnValue(of(undefined)),
+    clearSession: vi.fn(),
+    principal: vi.fn().mockReturnValue({ role: 'admin' }),
+  };
   TestBed.configureTestingModule({
     imports: [Dashboard],
     providers: [
       { provide: StatsService, useValue: statsMock },
       { provide: AlertsService, useValue: alertsMock },
+      { provide: PredictionsService, useValue: predictionsMock() },
       { provide: AuthService, useValue: authMock },
       provideRouter([]),
     ],
@@ -128,15 +201,17 @@ describe('Dashboard', () => {
   it('déconnecte localement et redirige vers /login même si logout échoue côté réseau', () => {
   const statsMock = { getSummary: vi.fn().mockReturnValue(of({ total_sites: 7, sites: [] })) };
   const alertsMock = { getAlerts: vi.fn().mockReturnValue(of([])) };
-  const authMock = {
+    const authMock = {
     logout: vi.fn().mockReturnValue(throwError(() => new Error('réseau indisponible'))),
     clearSession: vi.fn(),
+    principal: vi.fn().mockReturnValue({ role: 'admin' }),
   };
   TestBed.configureTestingModule({
     imports: [Dashboard],
     providers: [
       { provide: StatsService, useValue: statsMock },
       { provide: AlertsService, useValue: alertsMock },
+      { provide: PredictionsService, useValue: predictionsMock() },
       { provide: AuthService, useValue: authMock },
       provideRouter([]),
     ],
@@ -164,6 +239,7 @@ describe('Dashboard', () => {
       providers: [
         { provide: StatsService, useValue: statsMock },
         { provide: AlertsService, useValue: alertsMock },
+        { provide: PredictionsService, useValue: predictionsMock() },
         provideRouter([]),
       ],
     });
@@ -179,4 +255,26 @@ describe('Dashboard', () => {
       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

@@ -1,15 +1,17 @@
-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, 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, 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';
@@ -27,11 +29,21 @@ const TON_PAR_SEVERITE: Record<AlertSeverity, BadgeTone> = {
   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,
+    DatePipe,
     RouterLink,
     ConsumptionGauge,
     SiteLoadChart,
@@ -47,31 +59,52 @@ const TON_PAR_SEVERITE: Record<AlertSeverity, BadgeTone> = {
 export class Dashboard implements OnInit {
   private statsService = inject(StatsService);
   private alertsService = inject(AlertsService);
-  private auth = inject(AuthService);
+  public auth = inject(AuthService);
+  private predictionsService = inject(PredictionsService);
   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()))
-      .subscribe((alerts) => this.alerts.set(alerts));
+      .pipe(catchError(() => this.reportUnavailable(this.alertsError)))
+      .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);
       });
   }
@@ -80,6 +113,10 @@ export class Dashboard implements OnInit {
     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']),
@@ -91,8 +128,8 @@ export class Dashboard implements OnInit {
     });
   }
 
-  private reportUnavailable(): Observable<never> {
-    this.error.set(UNAVAILABLE_MESSAGE);
+  private reportUnavailable(target: WritableSignal<string | null>): Observable<never> {
+    target.set(UNAVAILABLE_MESSAGE);
     return EMPTY;
   }
 }

apps/frontend/src/app/features/monitoring/sensor-status/sensor-status.html

@@ -0,0 +1,51 @@
+<div class="sensor-status">
+  <nav class="ev-breadcrumb">
+    <a routerLink="/dashboard">Tableau de bord</a>
+  </nav>
+
+  <header class="sensor-status__header">
+    <a routerLink="/dashboard" class="ev-brand-link">
+      <ev-brand class="sensor-status__logo" />
+    </a>
+    <div>
+      <h1>Supervision des capteurs</h1>
+      <p class="sensor-status__subtitle">État de santé par capteur et par site</p>
+    </div>
+  </header>
+
+  @if (error(); as message) {
+    <ev-alert severity="danger" class="banner-error">{{ message }}</ev-alert>
+  }
+
+  @if (data(); as d) {
+    <div class="sites-grid">
+      @for (site of d.sites; track site.site_id) {
+        <ev-card class="site-card">
+          <div class="site-card__header">
+            <span class="site-card__name">{{ site.site_name }}</span>
+            <ev-badge [tone]="badgeToneForOverall(site.overall)">{{ site.overall }}</ev-badge>
+          </div>
+
+          <ul class="sensor-list">
+            @for (entry of sensorEntries; track entry[0]) {
+              @let diagnostic = sensorOf(site.sensors, entry[0]);
+              <li class="sensor-item">
+                <span class="sensor-dot" [class]="'sensor-dot--' + diagnostic.status"></span>
+                <span class="sensor-item__label">{{ entry[1] }}</span>
+                @if (diagnostic.status === 'failing') {
+                  <span class="sensor-item__since">
+                    @if (diagnostic.since; as since) {
+                      dernière lecture le {{ since | date: 'dd/MM/yyyy HH:mm' }}
+                    } @else {
+                      aucune lecture reçue
+                    }
+                  </span>
+                }
+              </li>
+            }
+          </ul>
+        </ev-card>
+      }
+    </div>
+  }
+</div>

apps/frontend/src/app/features/monitoring/sensor-status/sensor-status.scss

@@ -0,0 +1,90 @@
+:host {
+  display: block;
+  color: var(--color-text);
+  padding: 2.5rem 2rem;
+  max-width: 1100px;
+  margin: 0 auto;
+}
+
+.sensor-status__header {
+  display: flex;
+  align-items: center;
+  gap: 0.85rem;
+  margin-bottom: 2rem;
+
+  h1 {
+    margin: 0;
+    font-size: 1.75rem;
+    font-weight: 700;
+  }
+}
+
+.sensor-status__logo {
+  font-size: 1.3rem;
+}
+
+.sensor-status__subtitle {
+  margin: 0.25rem 0 0;
+  color: var(--color-text-muted);
+}
+
+.banner-error {
+  display: block;
+  margin: 0 0 1.5rem;
+}
+
+.sites-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
+  gap: 1rem;
+}
+
+.site-card__header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 0.75rem;
+}
+
+.site-card__name {
+  font-weight: 600;
+}
+
+.sensor-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+.sensor-item {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  font-size: 0.85rem;
+}
+
+.sensor-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  flex-shrink: 0;
+
+  &--ok {
+    background: var(--color-success);
+  }
+  &--failing {
+    background: var(--color-danger);
+  }
+}
+
+.sensor-item__label {
+  flex: 1;
+}
+
+.sensor-item__since {
+  color: var(--color-text-muted);
+  font-size: 0.75rem;
+}

apps/frontend/src/app/features/monitoring/sensor-status/sensor-status.spec.ts

@@ -0,0 +1,122 @@
+import { TestBed } from '@angular/core/testing';
+import { of, throwError } from 'rxjs';
+import { vi } from 'vitest';
+import { SensorStatusView } from './sensor-status';
+import { SensorsService } from '../../../core/services/sensors.service';
+import { SiteSensors } from '../../../shared/models/sensor-status.model';
+import {provideRouter} from '@angular/router';
+
+const OK_SENSORS: SiteSensors = {
+  consumption: { status: 'ok', since: null },
+  electrical: { status: 'ok', since: null },
+  temperature: { status: 'ok', since: null },
+  humidity: { status: 'ok', since: null },
+  network: { status: 'ok', since: null },
+};
+
+describe('SensorStatusView', () => {
+  let sensorsMock: { getStatus: ReturnType<typeof vi.fn> };
+
+  beforeEach(() => {
+    sensorsMock = { getStatus: vi.fn() };
+
+    TestBed.configureTestingModule({
+      imports: [SensorStatusView],
+      providers: [
+        { provide: SensorsService, useValue: sensorsMock },
+        provideRouter([]),
+      ],
+    });
+  });
+
+  it('charge et affiche les données au démarrage', () => {
+    sensorsMock.getStatus.mockReturnValue(
+      of({
+        timestamp: '2026-09-18T08:00:00',
+        sites: [
+          { site_id: 'SITE001', site_name: 'Bureau Test', overall: 'ok', sensors: OK_SENSORS },
+        ],
+      })
+    );
+
+    const fixture = TestBed.createComponent(SensorStatusView);
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.data()?.sites.length).toBe(1);
+    expect(fixture.componentInstance.error()).toBeNull();
+    expect(fixture.nativeElement.textContent).toContain('Bureau Test');
+  });
+
+  it("affiche un message d'erreur si l'appel échoue", () => {
+    sensorsMock.getStatus.mockReturnValue(throwError(() => new Error('boom')));
+
+    const fixture = TestBed.createComponent(SensorStatusView);
+    fixture.detectChanges();
+
+    expect(fixture.componentInstance.error()).toBe(
+      'État des capteurs indisponible, réessayez plus tard.'
+    );
+    expect(fixture.componentInstance.data()).toBeNull();
+    expect(fixture.nativeElement.textContent).toContain('État des capteurs indisponible');
+  });
+
+  it('associe le bon ton de badge à chaque statut global', () => {
+    sensorsMock.getStatus.mockReturnValue(of({ timestamp: '2026-09-18T08:00:00', sites: [] }));
+    const fixture = TestBed.createComponent(SensorStatusView);
+    const component = fixture.componentInstance;
+
+    expect(component.badgeToneForOverall('ok')).toBe('success');
+    expect(component.badgeToneForOverall('degraded')).toBe('warning');
+    expect(component.badgeToneForOverall('critical')).toBe('critical');
+    expect(component.badgeToneForOverall('inconnu')).toBe('neutral');
+  });
+
+  it('retourne le bon diagnostic via sensorOf', () => {
+    sensorsMock.getStatus.mockReturnValue(of({ timestamp: '2026-09-18T08:00:00', sites: [] }));
+    const fixture = TestBed.createComponent(SensorStatusView);
+    const component = fixture.componentInstance;
+
+    expect(component.sensorOf(OK_SENSORS, 'temperature')).toEqual({ status: 'ok', since: null });
+  });
+
+  it('affiche la date de la dernière lecture reçue pour un capteur en panne', () => {
+    const sensors: SiteSensors = {
+      ...OK_SENSORS,
+      temperature: { status: 'failing', since: '2026-09-18T08:00:00' },
+    };
+    sensorsMock.getStatus.mockReturnValue(
+      of({
+        timestamp: '2026-09-18T08:00:00',
+        sites: [{ site_id: 'SITE001', site_name: 'Bureau Test', overall: 'degraded', sensors }],
+      })
+    );
+
+    const fixture = TestBed.createComponent(SensorStatusView);
+    fixture.detectChanges();
+
+    expect(fixture.nativeElement.textContent).toContain('dernière lecture le');
+    expect(fixture.nativeElement.textContent).toContain('18/09/2026 08:00');
+  });
+
+  it("annonce l'absence de lecture quand un site n'en a jamais reçu", () => {
+    const sensors: SiteSensors = {
+      consumption: { status: 'failing', since: null },
+      electrical: { status: 'failing', since: null },
+      temperature: { status: 'failing', since: null },
+      humidity: { status: 'failing', since: null },
+      network: { status: 'failing', since: null },
+    };
+    sensorsMock.getStatus.mockReturnValue(
+      of({
+        timestamp: '2026-09-18T08:00:00',
+        sites: [{ site_id: 'SITE001', site_name: 'Bureau Test', overall: 'critical', sensors }],
+      })
+    );
+
+    const fixture = TestBed.createComponent(SensorStatusView);
+    fixture.detectChanges();
+
+    expect(fixture.nativeElement.textContent).toContain('aucune lecture reçue');
+    expect(fixture.nativeElement.textContent).not.toContain('dernière lecture le');
+  });
+});

apps/frontend/src/app/features/monitoring/sensor-status/sensor-status.ts

@@ -0,0 +1,65 @@
+import { Component, OnInit, inject, signal } from '@angular/core';
+import { RouterLink } from '@angular/router';
+import { catchError, EMPTY, Observable } from 'rxjs';
+import {Badge, BadgeTone} from '../../../shared/components/ui/badge/badge';
+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 {SensorsService} from '../../../core/services/sensors.service';
+import {SensorDiagnostic, SensorStatusResponse} from '../../../shared/models/sensor-status.model';
+import { DatePipe } from '@angular/common';
+
+const UNAVAILABLE_MESSAGE = 'État des capteurs indisponible, réessayez plus tard.';
+
+const SENSOR_LABELS: Record<string, string> = {
+  consumption: 'Consommation',
+  electrical: 'Électrique',
+  temperature: 'Température',
+  humidity: 'Humidité',
+  network: 'Réseau',
+};
+
+const TON_PAR_OVERALL: Record<string, BadgeTone> = {
+  ok: 'success',
+  degraded: 'warning',
+  critical: 'critical',
+};
+
+@Component({
+  selector: 'app-sensor-status',
+  standalone: true,
+  imports: [RouterLink, Card, Alert, Badge, Brand, DatePipe],
+  templateUrl: './sensor-status.html',
+  styleUrl: './sensor-status.scss',
+})
+export class SensorStatusView implements OnInit {
+  private sensorsService = inject(SensorsService);
+
+  data = signal<SensorStatusResponse | null>(null);
+  error = signal<string | null>(null);
+
+  readonly sensorEntries = Object.entries(SENSOR_LABELS);
+
+  ngOnInit(): void {
+    this.sensorsService
+      .getStatus()
+      .pipe(catchError(() => this.reportUnavailable()))
+      .subscribe((response) => {
+        this.error.set(null);
+        this.data.set(response);
+      });
+  }
+
+  sensorOf(sensors: Record<string, SensorDiagnostic>, key: string): SensorDiagnostic {
+    return sensors[key];
+  }
+
+  badgeToneForOverall(overall: string): BadgeTone {
+    return TON_PAR_OVERALL[overall] ?? 'neutral';
+  }
+
+  private reportUnavailable(): Observable<never> {
+    this.error.set(UNAVAILABLE_MESSAGE);
+    return EMPTY;
+  }
+}

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

@@ -1,19 +0,0 @@
-<div class="site-detail-placeholder">
-  <nav class="ev-breadcrumb">
-    <a routerLink="/dashboard">Tableau de bord</a>
-    <span>/</span>
-    <a routerLink="/sites">Sites</a>
-  </nav>
-
-  <header class="site-detail-placeholder__header">
-    <a routerLink="/dashboard" class="ev-brand-link">
-      <ev-brand class="site-detail-placeholder__logo" />
-    </a>
-    <h1>Site {{ siteId() }}</h1>
-  </header>
-
-  <ev-card>
-    <p>Le détail de ce site est à venir (voir issue #51).</p>
-    <a routerLink="/sites" class="ev-link">Retour aux sites</a>
-  </ev-card>
-</div>

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

@@ -1,28 +0,0 @@
-:host {
-  display: block;
-  color: var(--color-text);
-  padding: 2.5rem 2rem;
-  max-width: 640px;
-  margin: 0 auto;
-}
-
-.site-detail-placeholder__header {
-  display: flex;
-  align-items: center;
-  gap: 0.85rem;
-  margin-bottom: 1.5rem;
-
-  h1 {
-    margin: 0;
-    font-size: 1.5rem;
-    font-weight: 700;
-  }
-}
-
-.site-detail-placeholder__logo {
-  font-size: 1.3rem;
-}
-
-ev-card p {
-  margin: 0 0 0.75rem;
-}

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

@@ -1,42 +0,0 @@
-import { TestBed } from '@angular/core/testing';
-import { ActivatedRoute, convertToParamMap, provideRouter } from '@angular/router';
-import { BehaviorSubject } from 'rxjs';
-import { SiteDetailPlaceholder } from './site-detail-placeholder';
-
-describe('SiteDetailPlaceholder', () => {
-  it("affiche l'identifiant du site depuis la route", () => {
-    const paramMap = new BehaviorSubject(convertToParamMap({ siteId: 'SITE001' }));
-    TestBed.configureTestingModule({
-      imports: [SiteDetailPlaceholder],
-      providers: [
-        provideRouter([]),
-        { provide: ActivatedRoute, useValue: { paramMap } },
-      ],
-    });
-
-    const fixture = TestBed.createComponent(SiteDetailPlaceholder);
-    fixture.detectChanges();
-
-    expect(fixture.nativeElement.textContent).toContain('SITE001');
-  });
-
-  it('met à jour l\'affichage quand le paramètre change sans recréer le composant', () => {
-    const paramMap = new BehaviorSubject(convertToParamMap({ siteId: 'SITE001' }));
-    TestBed.configureTestingModule({
-      imports: [SiteDetailPlaceholder],
-      providers: [
-        provideRouter([]),
-        { provide: ActivatedRoute, useValue: { paramMap } },
-      ],
-    });
-
-    const fixture = TestBed.createComponent(SiteDetailPlaceholder);
-    fixture.detectChanges();
-
-    paramMap.next(convertToParamMap({ siteId: 'SITE002' }));
-    fixture.detectChanges();
-
-    expect(fixture.nativeElement.textContent).toContain('SITE002');
-    expect(fixture.nativeElement.textContent).not.toContain('SITE001');
-  });
-});

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

@@ -1,19 +0,0 @@
-import { Component, inject } from '@angular/core';
-import { toSignal } from '@angular/core/rxjs-interop';
-import { ActivatedRoute, RouterLink } from '@angular/router';
-import { map } from 'rxjs';
-import { Card } from '../../../shared/components/ui/card/card';
-import { Brand } from '../../../shared/components/ui/brand/brand';
-
-@Component({
-  selector: 'app-site-detail-placeholder',
-  standalone: true,
-  imports: [RouterLink, Card, Brand],
-  templateUrl: './site-detail-placeholder.html',
-  styleUrl: './site-detail-placeholder.scss',
-})
-export class SiteDetailPlaceholder {
-  private route = inject(ActivatedRoute);
-
-  siteId = toSignal(this.route.paramMap.pipe(map((params) => params.get('siteId'))));
-}

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/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/models/prediction.model.ts

@@ -0,0 +1,24 @@
+export type PredictionStatus = 'available' | 'insufficient_data' | 'error';
+export type PredictionTargetMetric = 'consumption_kwh' | 'consumption_kw';
+
+export interface SitePrediction {
+  target_at: string;
+  target_metric: PredictionTargetMetric;
+  period_minutes: number | null;
+  predicted_value: number | null;
+  status: PredictionStatus;
+  failure_reason: string | null;
+  model_reference: string;
+  created_at: string;
+}
+
+export interface SitePredictionSummary {
+  site_id: string;
+  site_name: string;
+  prediction: SitePrediction | null;
+}
+
+export interface PredictionSummary {
+  timestamp: string;
+  sites: SitePredictionSummary[];
+}

apps/frontend/src/app/shared/models/reading.model.ts

@@ -0,0 +1,23 @@
+export type ReadingSource = 'csv' | 'api_current' | 'api_history';
+export type ReadingDataQuality = 'good' | 'partial' | 'degraded' | 'critical';
+
+export interface Reading {
+  reading_id: number;
+  site_id: string;
+  timestamp: string;
+  source: ReadingSource;
+  consumption_kw: number | null;
+  consumption_kwh: number | null;
+  consumption_euros: string | null;
+  voltage_v: number | null;
+  current_a: number | null;
+  power_factor: number | null;
+  temperature_celsius: number | null;
+  humidity_percent: number | null;
+  solar_irradiance_wm2: number | null;
+  is_working_hours: boolean | null;
+  data_quality: ReadingDataQuality | null;
+  null_reasons: string[] | null;
+  imputed_values: Record<string, unknown> | null;
+  imputation_method: string | null;
+}

apps/frontend/src/app/shared/models/sensor-status.model.ts

@@ -0,0 +1,28 @@
+export type SensorStatus = 'ok' | 'failing';
+export type OverallStatus = 'ok' | 'degraded' | 'critical';
+
+export interface SensorDiagnostic {
+  status: SensorStatus;
+  since: string | null;
+}
+
+export interface SiteSensors {
+  consumption: SensorDiagnostic;
+  electrical: SensorDiagnostic;
+  temperature: SensorDiagnostic;
+  humidity: SensorDiagnostic;
+  network: SensorDiagnostic;
+  [key: string]: SensorDiagnostic;
+}
+
+export interface SiteSensorStatus {
+  site_id: string;
+  site_name: string;
+  sensors: SiteSensors;
+  overall: OverallStatus;
+}
+
+export interface SensorStatusResponse {
+  timestamp: string;
+  sites: SiteSensorStatus[];
+}