fix: BOC ledger-integration — fixa robust_client för riktig DB-schema

- Uppdatera GetBalanceSheet att använda entry_date istället för period
- Uppdatera GetIncomeStatement att använda entry_date istället för period
- Uppdatera GetMomsReport att använda entry_date och ta bort status
- Lägg till integrationstester som verifierar mot riktig DB
- Alla tester passerar: GetAccounts, GetBalanceSheet, GetIncomeStatement, GetMomsReport

backend/go.sum

@@ -71,6 +71,7 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
 github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=

backend/ledger/integration_test.go

@@ -0,0 +1,69 @@
+package ledger
+
+import (
+	"context"
+	"os"
+	"testing"
+)
+
+// TestIntegration_RobustClient tests against real ledger database
+// Run with: LEDGER_DB_URL=postgres://... go test -run Integration -v ./ledger
+func TestIntegration_RobustClient(t *testing.T) {
+	dbURL := os.Getenv("LEDGER_DB_URL")
+	if dbURL == "" {
+		t.Skip("LEDGER_DB_URL not set, skipping integration test")
+	}
+
+	client, err := NewRobustClient(dbURL)
+	if err != nil {
+		t.Fatalf("Failed to connect to ledger DB: %v", err)
+	}
+	defer client.db.Close()
+
+	ctx := context.Background()
+
+	t.Run("GetAccounts", func(t *testing.T) {
+		accounts, err := client.GetAccounts(ctx)
+		if err != nil {
+			t.Fatalf("GetAccounts failed: %v", err)
+		}
+		t.Logf("Found %d accounts", len(accounts))
+		for _, a := range accounts[:min(5, len(accounts))] {
+			t.Logf("  %s: %s (%.2f)", a.Code, a.Name, a.Balance)
+		}
+	})
+
+	t.Run("GetBalanceSheet", func(t *testing.T) {
+		bs, err := client.GetBalanceSheet(ctx, "2026-01")
+		if err != nil {
+			t.Fatalf("GetBalanceSheet failed: %v", err)
+		}
+		t.Logf("Assets: %.2f, Liabilities: %.2f, Equity: %.2f",
+			bs.TotalAssets, bs.TotalLiabilities, bs.TotalEquity)
+	})
+
+	t.Run("GetIncomeStatement", func(t *testing.T) {
+		is, err := client.GetIncomeStatement(ctx, "2026-01")
+		if err != nil {
+			t.Fatalf("GetIncomeStatement failed: %v", err)
+		}
+		t.Logf("Revenue: %.2f, Expenses: %.2f, Net Income: %.2f",
+			is.TotalRevenue, is.TotalExpense, is.NetIncome)
+	})
+
+	t.Run("GetMomsReport", func(t *testing.T) {
+		moms, err := client.GetMomsReport(ctx, "2026-01")
+		if err != nil {
+			t.Fatalf("GetMomsReport failed: %v", err)
+		}
+		t.Logf("Moms Ut: %.2f, Moms Att Betala: %.2f",
+			moms.MomsUt, moms.MomsAttBetala)
+	})
+}
+
+func min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}

backend/ledger/robust_client.go

@@ -92,10 +92,10 @@ func (c *RobustClient) GetBalanceSheet(ctx context.Context, period string) (*Bal
 			         SUM(CASE WHEN jl.credit IS NOT NULL THEN jl.credit ELSE 0 END), 0) as balance
 		FROM accounts a
 		LEFT JOIN journal_lines jl ON a.id = jl.account_id
-		LEFT JOIN journal_entries je ON jl.journal_entry_id = je.id AND je.period = $1 AND je.status = 'posted'
+		LEFT JOIN journal_entries je ON jl.journal_entry_id = je.id AND je.entry_date >= $1::date AND je.entry_date < ($1::date + INTERVAL '1 month')
 		GROUP BY a.id, a.code, a.name, a.account_type
 		ORDER BY a.code
-	`, period)
+	`, period+"-01")
 	if err != nil {
 		return nil, fmt.Errorf("query balance sheet: %w", err)
 	}
@@ -146,11 +146,11 @@ func (c *RobustClient) GetIncomeStatement(ctx context.Context, period string) (*
 			         SUM(CASE WHEN jl.credit IS NOT NULL THEN jl.credit ELSE 0 END), 0) as balance
 		FROM accounts a
 		LEFT JOIN journal_lines jl ON a.id = jl.account_id
-		LEFT JOIN journal_entries je ON jl.journal_entry_id = je.id AND je.period = $1 AND je.status = 'posted'
+		LEFT JOIN journal_entries je ON jl.journal_entry_id = je.id AND je.entry_date >= $1::date AND je.entry_date < ($1::date + INTERVAL '1 month')
 		WHERE a.account_type IN ('Revenue', 'Expense')
 		GROUP BY a.id, a.code, a.name, a.account_type
 		ORDER BY a.code
-	`, period)
+	`, period+"-01")
 	if err != nil {
 		return nil, fmt.Errorf("query income statement: %w", err)
 	}
@@ -200,9 +200,9 @@ func (c *RobustClient) GetMomsReport(ctx context.Context, period string) (*MomsR
 		FROM journal_lines jl
 		JOIN journal_entries je ON jl.journal_entry_id = je.id
 		JOIN accounts a ON jl.account_id = a.id
-		WHERE je.period = $1 AND je.status = 'posted'
+		WHERE je.entry_date >= $1::date AND je.entry_date < ($1::date + INTERVAL '1 month')
 		AND a.code LIKE '26%'
-	`, period).Scan(&report.MomsUt)
+	`, period+"-01").Scan(&report.MomsUt)
 	if err != nil {
 		return nil, fmt.Errorf("query moms ut: %w", err)
 	}