Étape 1 : squelette du projet

- Monorepo backend/ + frontend/ + deploy/
- Backend FastAPI/SQLModel/Alembic/uv qui démarre (health check, config,
  i18n, base de test PostgreSQL, pytest)
- docker-compose de développement (db + backend hot-reload)
- Chaîne CI/CD GitHub Actions : lint + tests, build image, push GHCR,
  déploiement SSH sur le VPS à chaque push main
- CLAUDE.md : vocabulaire du domaine, conventions, commandes

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017uUsRg7XzopkCPWimwg9ZM

backend/app/migrations/env.py

@@ -0,0 +1,50 @@
+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+from sqlmodel import SQLModel
+
+from app import models  # noqa: F401  (enregistre les métadonnées des tables)
+from app.config import get_settings
+
+config = context.config
+config.set_main_option("sqlalchemy.url", get_settings().database_url)
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = SQLModel.metadata
+
+
+def run_migrations_offline() -> None:
+    context.configure(
+        url=config.get_main_option("sqlalchemy.url"),
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+        compare_type=True,
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            compare_type=True,
+        )
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()