fix: Define BACKEND_DIR and correct usage in oneclick-conda-install.sh

Author: Aki-07

oneclick-conda-install.sh

@@ -26,6 +26,7 @@ set -euo pipefail
 readonly PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 readonly FRONTEND_DIR="${PROJECT_ROOT}/surfsense_web"
 readonly EXTENSION_DIR="${PROJECT_ROOT}/surfsense_browser_extension"
+readonly BACKEND_DIR="${PROJECT_ROOT}/surfsense_backend"
 
 ENV_NAME="${SURFSENSE_ENV_NAME:-surfsense}"
 PYTHON_VERSION="${SURFSENSE_PYTHON_VERSION:-3.12}"
@@ -96,7 +97,7 @@ main() {
      conda activate ${ENV_NAME}
 
 2. Start the backend API:
-     (cd ${BACKEND_DIR} && uvicorn app.app:app --reload)
+     (cd "${BACKEND_DIR}" && uvicorn app.app:app --reload)
    or refer to DEPLOYMENT_GUIDE.md for production options.
 
 3. Start the web app (if npm was available):
@@ -107,4 +108,3 @@ EOF
 }
 
 main "$@"
-