Add debugging to trace account selection logic

- Added debug logging to show which account is being created
- Added logging for difference calculation and condition evaluation
- Should help identify why example 1 shows 4456700 instead of 4455100
- Will help trace the source of duplicate 4455100 entries

core/class/declarationtva_pdf.class.php

@@ -2075,6 +2075,7 @@ class DeclarationTVA_PDF
         error_log("DeclarationTVA: Total debits: " . $total_debits);
         error_log("DeclarationTVA: Total credits: " . $total_credits);
         error_log("DeclarationTVA: Total difference: " . $difference);
+        error_log("DeclarationTVA: Difference > 0: " . ($difference > 0 ? 'true' : 'false'));
         
         // Calculate rounded difference for main entry
         $rounded_difference = round($difference);
@@ -2083,6 +2084,7 @@ class DeclarationTVA_PDF
             // Main balancing entry with rounded amount
             if ($difference > 0) {
                 // More credits than debits - need debit entry (4456700)
+                error_log("DeclarationTVA: Creating 4456700 debit entry for " . $rounded_difference);
                 $balancing_entries[] = array(
                     'account_code' => '4456700',
                     'account_label' => $this->getAccountLabel('4456700'),
@@ -2092,6 +2094,7 @@ class DeclarationTVA_PDF
                 );
             } else {
                 // More debits than credits - need credit entry (4455100)
+                error_log("DeclarationTVA: Creating 4455100 credit entry for " . abs($rounded_difference));
                 $balancing_entries[] = array(
                     'account_code' => '4455100',
                     'account_label' => $this->getAccountLabel('4455100'),