feat: add StatusWidget component and integrate it into the app with public status URL support

Dockerfile

@@ -5,6 +5,8 @@ RUN npm ci
 COPY index.html tsconfig.json vite.config.ts ./
 COPY src ./src
 COPY public ./public
+ARG VITE_STATUS_URL=
+ENV VITE_STATUS_URL=$VITE_STATUS_URL
 RUN npm run build
 
 FROM node:24-alpine