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/alembic.ini

@@ -0,0 +1,39 @@
+[alembic]
+script_location = app/migrations
+prepend_sys_path = .
+path_separator = os
+# L'URL est fournie par app/migrations/env.py à partir de la configuration.
+
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARNING
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARNING
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S