db fix and new update request

internal/database/refrence-repo.go

@@ -2,6 +2,7 @@ package database
 
 import (
 	"context"
+	"database/sql"
 	"fmt"
 )
 
@@ -28,10 +29,10 @@ type GLAccount struct {
 // ── ReferenceRepo ─────────────────────────────────────────────────────────────
 
 type ReferenceRepo struct {
-	db *DB
+	db *sql.DB
 }
 
-func NewReferenceRepo(db *DB) *ReferenceRepo {
+func NewReferenceRepo(db *sql.DB) *ReferenceRepo {
 	return &ReferenceRepo{db: db}
 }