switched data dir to writeable dir

app/services/database.py

@@ -5,7 +5,10 @@ import os
 class Database:
     def __init__(self):
         load_dotenv()
-        self.db_path = os.path.join(os.getenv("DATA_DIR"),"sqlite_db/sqlite.db")
+        base_dir = os.getenv("HF_HOME", "/home/user/app")
+        data_dir = os.path.join(base_dir, "data")
+        os.makedirs(data_dir, exist_ok=True)
+        self.db_path = os.path.join(data_dir, "database.sqlite")
         os.makedirs(os.path.dirname(self.db_path), exist_ok=True)
         self.conn = sqlite3.connect(self.db_path, check_same_thread=False)
         self.create_tables()