Add sidebar builder

app/db.py

@@ -1,6 +1,7 @@
 import sqlite3
 from pathlib import Path
 import bcrypt
+import pandas as pd
 
 BASE_DIR = Path(__file__).resolve().parent.parent
 DB_PATH = BASE_DIR / "data" / "app.db"
@@ -10,3 +11,7 @@ def get_conn():
     # check_same_thread=False, damit Streamlit mehrere Threads nutzen kann
     return sqlite3.connect(DB_PATH, check_same_thread=False)
 
+def get_list(sql, params=None):
+    conn = get_conn()
+    df = pd.read_sql_query(sql, conn, params=params)
+    return df