notification working

backend/config.py

@@ -1,5 +1,8 @@
 from pydantic_settings import BaseSettings, SettingsConfigDict  # type: ignore
 from functools import lru_cache
+from pathlib import Path
+
+_ENV_FILE = str(Path(__file__).parent / ".env")
 
 
 class Settings(BaseSettings):
@@ -12,7 +15,7 @@ class Settings(BaseSettings):
     firebase_service_account_json: str = ""
 
     model_config = SettingsConfigDict(
-        env_file=".env",
+        env_file=_ENV_FILE,
         case_sensitive=False,
         extra="ignore",  # ignore unknown env vars (e.g. VITE_* from root .env)
     )