Update validation rules in ImportManualInboxCommand and ManualInboxDialog to allow season numbers starting from zero, reflecting the inclusion of special episodes and pilots. Adjust input constraints in the frontend to enhance user experience and ensure consistency with backend validation.

frontend/src/features/admin/media/ManualInboxDialog.tsx

@@ -184,9 +184,10 @@ export function ManualInboxDialog({ onClose }: { onClose: () => void }) {
             </div>
             <div className="flex flex-col gap-1.5">
               <Label>{t('admin.media.toShowSeason')}</Label>
+              {/* Ноль — законный сезон: в нём живут спецвыпуски и пилоты. */}
               <Input
                 type="number"
-                min={1}
+                min={0}
                 placeholder={t('admin.media.toShowAuto')}
                 value={seasonStr}
                 onChange={(e) => setSeasonStr(e.target.value)}