Separate QuantEngine database deployment

tools/setup_quantengine_postgresql_db.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# Create the QuantEngine database and application role on the local PostgreSQL instance.
+
+set -euo pipefail
+
+DB_NAME="${DB_NAME:-quantenginedb}"
+DB_USER="${DB_USER:-quantengine_app}"
+DB_PASSWORD="${DB_PASSWORD:-CHANGE_ME}"
+DB_HOST="${DB_HOST:-127.0.0.1}"
+DB_PORT="${DB_PORT:-5432}"
+ADMIN_DB="${ADMIN_DB:-postgres}"
+SCHEMA_NAME="${SCHEMA_NAME:-quantengine}"
+
+echo "Creating database and role for ${DB_NAME}..."
+sudo -u postgres psql -h "${DB_HOST}" -p "${DB_PORT}" -d "${ADMIN_DB}" -v ON_ERROR_STOP=1 <<SQL
+DO \$\$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = '${DB_USER}') THEN
+        CREATE ROLE ${DB_USER} LOGIN PASSWORD '${DB_PASSWORD}';
+    ELSE
+        ALTER ROLE ${DB_USER} WITH LOGIN PASSWORD '${DB_PASSWORD}';
+    END IF;
+END
+\$\$;
+
+DO \$\$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_database WHERE datname = '${DB_NAME}') THEN
+        CREATE DATABASE ${DB_NAME} OWNER ${DB_USER};
+    END IF;
+END
+\$\$;
+SQL
+
+sudo -u postgres psql -h "${DB_HOST}" -p "${DB_PORT}" -d "${DB_NAME}" -v ON_ERROR_STOP=1 <<SQL
+CREATE SCHEMA IF NOT EXISTS ${SCHEMA_NAME} AUTHORIZATION ${DB_USER};
+GRANT ALL PRIVILEGES ON DATABASE ${DB_NAME} TO ${DB_USER};
+GRANT USAGE, CREATE ON SCHEMA ${SCHEMA_NAME} TO ${DB_USER};
+ALTER SCHEMA ${SCHEMA_NAME} OWNER TO ${DB_USER};
+SQL
+
+APP_ENV_FILE="${APP_ENV_FILE:-/home/kjh2064/.config/quantengine.env}"
+
+mkdir -p "$(dirname "${APP_ENV_FILE}")"
+cat > "${APP_ENV_FILE}" <<EOF
+ConnectionStrings__DefaultConnection=Host=127.0.0.1;Database=${DB_NAME};Username=${DB_USER};Password=${DB_PASSWORD};Search Path=${SCHEMA_NAME};
+EOF
+
+chmod 600 "${APP_ENV_FILE}"
+
+echo "Database setup completed: ${DB_NAME} / ${DB_USER}"
+echo "Wrote app env file: ${APP_ENV_FILE}"