feat: Implement RSA key generation and initialization for JWT authentication

backend/cmd/api/main.go

@@ -13,7 +13,8 @@ import (
 	"github.com/gin-gonic/gin"
 	swaggerFiles "github.com/swaggo/files"
 	ginSwagger "github.com/swaggo/gin-swagger"
-	_ "github.com/timetracker/backend/docs" // This line is important for swag to work
+	_ "github.com/timetracker/backend/docs"
+	"github.com/timetracker/backend/internal/api/middleware"
 	"github.com/timetracker/backend/internal/api/routes"
 	"github.com/timetracker/backend/internal/config"
 	"github.com/timetracker/backend/internal/models"
@@ -60,6 +61,11 @@ func main() {
 		log.Fatalf("Error migrating database: %v", err)
 	}
 
+	// Initialize JWT keys
+	if err := middleware.InitJWTKeys(); err != nil {
+		log.Fatalf("Error initializing JWT keys: %v", err)
+	}
+
 	// Create Gin router
 	r := gin.Default()