Add reconciliation system with checkpoints and adjustments

- Add Reconciliation transaction type that appears as visible rows
- Reconciliation checkpoints show expected vs calculated balance
- Red background if out of balance, green if balanced
- Description shows balance status (Balanced or Out of balance by .XX)
- Create Adjustment button appears when reconciliation is out of balance
- Adjustment transactions automatically created to match bank balance
- Reconciliations always sort last on their date
- Auto-recalculate all reconciliations when any transaction changes
- Persistent projection months setting (1-24 months, default 3)
- Persistent date range between sessions
- Fix projection regeneration to start from rule start date
- Fix duplicate projections when converting to actuals
- Grey out irrelevant fields when Reconciliation type selected

1 files changed, 6 insertions, 2 deletions

diff --git a/transaction.h b/transaction.h
index 9628a4e..0d608f2 100644
--- a/transaction.h
+++ b/transaction.h
@@ -7,7 +7,8 @@
 
 enum class TransactionType {
     Estimated,
-    Actual
+    Actual,
+    Reconciliation
 };
 
 enum class RecurrenceFrequency {
@@ -33,8 +34,10 @@ struct Transaction {
     QString occurrenceKey; // e.g. "2025-01" for monthly, "2025-W03" for weekly
     double expectedAmount; // original projected amount (for variance tracking)
     QDate expectedDate; // original projected date (for variance tracking)
+    double expectedBalance; // for reconciliation checkpoints - what bank says
+    double calculatedBalance; // for reconciliation checkpoints - what we calculated
     
-    Transaction() : id(-1), amount(0.0), type(TransactionType::Estimated), recurringId(-1), sortOrder(0), reconciled(false), expectedAmount(0.0) {}
+    Transaction() : id(-1), amount(0.0), type(TransactionType::Estimated), recurringId(-1), sortOrder(0), reconciled(false), expectedAmount(0.0), expectedBalance(0.0), calculatedBalance(0.0) {}
     
     double getBalance() const { return amount; }
 };
@@ -53,6 +56,7 @@ struct RecurringRule {
     int dayOfMonth;   // 1-31 for monthly, -1 if not applicable
     int occurrences;  // Number of times to repeat, -1 for indefinite
     int sortOrder;    // For ordering transactions on same date
+    QDate projectionEndDate; // How far into future to generate projections
     
     RecurringRule() : id(-1), frequency(RecurrenceFrequency::None), 
                       amount(0.0), dayOfWeek(-1), dayOfMonth(-1), occurrences(-1), sortOrder(0) {}