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, 3 insertions, 2 deletions

diff --git a/cashflow.h b/cashflow.h
index b75d62b..f76e11f 100644
--- a/cashflow.h
+++ b/cashflow.h
@@ -36,6 +36,7 @@ private slots:
     void onPreferences();
     void onRecurringRuleChanged();
     void onTransactionDateChanged();
+    void onCreateAdjustment();
     
 private:
     Ui::CashFlow *ui;
@@ -46,7 +47,6 @@ private:
     QFont currentAmountFont;
     int weekStartDay;
     QString currentFilePath;
-    Transaction currentProjectedTransaction; // For converting projections to actuals
     
     enum PeriodType {
         Daily,
@@ -61,7 +61,6 @@ private:
     void refreshRecurringTable();
     void calculateAndDisplayBalance();
     QList<Transaction> getAllTransactionsInRange();
-    QList<Transaction> generateProjectedTransactions();
     void clearTransactionEntry();
     void loadTransactionToEntry(const Transaction &t);
     void clearRecurringEntry();
@@ -73,6 +72,8 @@ private:
     void updateAmountColors();
     void loadSettings();
     QString formatCurrency(double amount) const;
+    double calculateBalanceUpTo(const QDate &date, const QString &account);
+    void recalculateAllReconciliations();
     bool openDatabase(const QString &filePath);
     void populateRecurringRulesCombo();
     void updateOccurrenceKey();