--- a/debian/patches/0001-guard-balances.patch	2026-03-02 09:14:03.000000000 +0000
+++ b/debian/patches/0001-guard-balances.patch	2026-03-02 10:41:55.000000000 +0000
@@ -15,7 +15,7 @@ diff --git a/internal/ledger/apply.go b/internal/ledger/apply.go
  		return balance, ErrShortBalance
  	}
 +	if delta == 0 {
-+		return balance, nil
++		return balance, nil // no-op posting
 +	}
  	return balance + delta, nil
  }