added garth and updated get client

app.py

@@ -3,6 +3,7 @@ import datetime
 import os
 import time
 from garminconnect import Garmin
+import garth
 
 app = Flask(__name__)
 
@@ -35,20 +36,21 @@ def get_client():
     os.makedirs(TOKEN_PATH, exist_ok=True)
 
     try:
-        # 1. Attempt to login using the tokens folder
         print("🔄 Attempting to log in using stored tokens...")
+        # 1. Ask garth to resume the session from the folder
+        garth.resume(TOKEN_PATH)
+        # 2. If it succeeds, initialize Garmin without credentials!
         garmin_client = Garmin()
-        garmin_client.login(TOKEN_PATH)
         print("✅ Logged into Garmin using cached tokens")
     except Exception as e:
         print(f"⚠️ Token login failed or missing ({e}). Falling back to credentials...")
         
-        # 2. If it fails, do a normal login with username and password
+        # 3. If it fails, do a normal login with username and password
         garmin_client = Garmin(EMAIL, PASSWORD)
         garmin_client.login()
         
-        # 3. Save the newly acquired tokens to your persistent folder!
-        garmin_client.garth.dump(TOKEN_PATH)
+        # 4. Save the newly acquired tokens to your persistent folder!
+        garth.dump(TOKEN_PATH)
         print("✅ Fresh login successful, tokens saved.")
 
     last_login_time = time.time()