ci(deploy): standardize docker compose env file usage across scripts

- Added --env-file .env to all docker compose commands for consistent environment variable loading
- Added MISTRAL_API_KEY validation in deploy.sh with fatal error if missing
- Added --force-recreate flag to recipe-api restarts in disable/enable receipt trace scripts
- Added .env file existence check in rebuild_flutter.sh
- Added API service recreation logic in deploy.sh when backend/importer services are updated

scripts/reset_recipe_stack.sh

@@ -7,7 +7,7 @@ trap 'echo "[reset][ERROR] Rad ${LINENO}: kommando misslyckades: ${BASH_COMMAND}
 # Config
 # ----------------------------------------
 APP_DIR="${1:-/opt/containers/recipe-app}"
-COMPOSE_FILES=(-f compose.yml -f compose.flutter.yml)
+COMPOSE_FILES=(--env-file .env -f compose.yml -f compose.flutter.yml)
 DB_CONTAINER="recipe-db"
 IMPORTER_DIR="../microservice-importer"
 SEED_FILE="db/seeds/seed_all.sql"