Fix zero balance on accounts list page

The correlated subquery in the SELECT was returning 0 for every row.
Replaced with a separate grouped-sum query joined in JS — same data, more
reliable SQL generation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/routes/(app)/companies/[companyId]/accounts/+page.server.ts

@@ -207,44 +207,29 @@ export const load: PageServerLoad = async ({ locals, params, parent, url }) => {
 
 	const showArchived = url.searchParams.get('archived') === '1';
 
-	const accountsWithBalance = await db
-		.select({
-			id: companyAccounts.id,
-			accountType: companyAccounts.accountType,
-			name: companyAccounts.name,
-			currency: companyAccounts.currency,
-			isActive: companyAccounts.isActive,
-			isArchived: companyAccounts.isArchived,
-			notes: companyAccounts.notes,
-			sortOrder: companyAccounts.sortOrder,
-			bankName: companyAccounts.bankName,
-			accountNumber: companyAccounts.accountNumber,
-			branch: companyAccounts.branch,
-			swiftBic: companyAccounts.swiftBic,
-			iban: companyAccounts.iban,
-			accountHolderName: companyAccounts.accountHolderName,
-			cardBrand: companyAccounts.cardBrand,
-			last4: companyAccounts.last4,
-			cardholderName: companyAccounts.cardholderName,
-			expiryMonth: companyAccounts.expiryMonth,
-			expiryYear: companyAccounts.expiryYear,
-			creditLimit: companyAccounts.creditLimit,
-			statementCloseDay: companyAccounts.statementCloseDay,
-			paymentDueDay: companyAccounts.paymentDueDay,
-			externalAccountId: companyAccounts.externalAccountId,
-			createdAt: companyAccounts.createdAt,
-			balance: sql<string>`coalesce((
-				select sum(${companyAccountTransactions.amount})
-				from ${companyAccountTransactions}
-				where ${companyAccountTransactions.accountId} = ${companyAccounts.id}
-			), '0')::text`
-		})
+	const accountsRaw = await db
+		.select()
 		.from(companyAccounts)
 		.where(
 			and(eq(companyAccounts.companyId, params.companyId), isNull(companyAccounts.deletedAt))
 		)
 		.orderBy(asc(companyAccounts.isArchived), asc(companyAccounts.sortOrder), asc(companyAccounts.name));
 
+	const balanceRows = await db
+		.select({
+			accountId: companyAccountTransactions.accountId,
+			balance: sql<string>`coalesce(sum(${companyAccountTransactions.amount}), '0')::text`
+		})
+		.from(companyAccountTransactions)
+		.where(eq(companyAccountTransactions.companyId, params.companyId))
+		.groupBy(companyAccountTransactions.accountId);
+
+	const balanceMap = new Map(balanceRows.map((r) => [r.accountId, r.balance]));
+	const accountsWithBalance = accountsRaw.map((a) => ({
+		...a,
+		balance: balanceMap.get(a.id) ?? '0'
+	}));
+
 	const visibleAccounts = showArchived
 		? accountsWithBalance
 		: accountsWithBalance.filter((a) => !a.isArchived);