Use prepared statement

cmd/web/main.go

@@ -8,6 +8,7 @@ import (
 	"context"
 	"database/sql"
 	_ "github.com/mattn/go-sqlite3"
+	"log"
 	"log/slog"
 	"net/http"
 	"os"
@@ -69,6 +70,11 @@ func openDb() (*sql.DB, error) {
 	if err == nil {
 		err = db.Ping()
 	}
+	_, err = db.Exec("PRAGMA foreign_keys = ON")
+	if err != nil {
+		log.Fatalf("Failed to enable foreign key constraints: %v", err)
+	}
+
 	return db, err
 }