Show current local time default when adding new reading

app/routes.py

@@ -275,6 +275,12 @@ def add_reading():
         db.session.commit()
         flash("Reading added successfully.", "success")
         return redirect(url_for('main.dashboard'))
+    
+    # Fetch the user's timezone (default to 'UTC' if none is set)
+    user_timezone = current_user.profile.timezone if current_user.profile and current_user.profile.timezone else 'UTC'
+    local_tz = timezone(user_timezone)
+
+    form.timestamp.data = utc.localize(datetime.utcnow()).astimezone(local_tz)
     return render_template('add_reading.html', form=form)
 
 @main.route('/reading/<int:reading_id>/edit', methods=['GET', 'POST'])