feat: weather conditions check from stroy-bot-main

Ports the weather check added to stroy-bot-main on 2026-10-16: daily
station weather, report positions with weather per shift and the AI
assessment of working conditions. Opens as ?page=weather&start=&end=
instead of the #weathercheck hash, and hub dates survive the way back.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/webparts/stroyBot/pages/weather/DowntimeActCell.tsx

@@ -0,0 +1,26 @@
+import * as React from 'react';
+import { Badge } from '@tnsu/ui-kit';
+import { IWeatherPosition } from './weatherTypes';
+import { EmptyValue } from './EmptyValue';
+import { WEATHER_TEXTS } from './texts';
+import styles from './WeatherPage.module.scss';
+
+const TEXTS = WEATHER_TEXTS.positions;
+
+interface Props {
+  position: IWeatherPosition;
+}
+
+/** «Акт простоя»: рекомендован (с причиной) / не требуется / нет оценки. */
+export const DowntimeActCell: React.FC<Props> = ({ position }) => {
+  if (position.downtime_act_recommended === false) {
+    return <Badge variant="success">{TEXTS.downtimeNotRequired}</Badge>;
+  }
+  if (position.downtime_act_recommended !== true) return <EmptyValue />;
+  return (
+    <>
+      <Badge variant="danger">{TEXTS.downtimeRecommended}</Badge>
+      {position.downtime_act_reason && <div className={styles.reason}>{position.downtime_act_reason}</div>}
+    </>
+  );
+};