fix: invidious password

hosts/fw/modules/web/invidious-init-user.nix

@@ -36,8 +36,11 @@ in
       if [ "$USER_EXISTS" -eq "0" ]; then
         echo "Creating admin user..."
 
-        # Read password from credential
-        PASSWORD=$(cat $CREDENTIALS_DIRECTORY/admin_password)
+        # Read password from credential and trim whitespace
+        PASSWORD=$(cat $CREDENTIALS_DIRECTORY/admin_password | tr -d '\n\r')
+
+        # Truncate to 55 characters (Invidious password limit)
+        PASSWORD="''${PASSWORD:0:55}"
 
         # Generate bcrypt hash
         HASH=$(${pythonWithBcrypt}/bin/python3 -c "import bcrypt; import sys; print(bcrypt.hashpw('$PASSWORD'.encode(), bcrypt.gensalt(rounds=10)).decode())")