feat: invite management API: DELETE /v1/user/invite/:id (204, cancels a pending invite) and POST /v1/user/invite/:id/renew (200, new code, expires_at = now+3d, created_at = now, resends the invitation email, old link dead)

internal/infrastructure/useCases/CancelInvite.go

@@ -0,0 +1,18 @@
+package useCases
+
+import "RenewCMS/internal/domain/invite"
+
+type CancelInviteUseCase struct {
+	inviteRepository invite.Repository
+}
+
+func NewCancelInviteUseCase(inviteRepository invite.Repository) *CancelInviteUseCase {
+	return &CancelInviteUseCase{inviteRepository}
+}
+
+func (c *CancelInviteUseCase) CancelInvite(id uint32) error {
+	if _, err := findManageableInvite(c.inviteRepository, id); err != nil {
+		return err
+	}
+	return c.inviteRepository.Delete(id)
+}