Build advertiser console with scoped page URLs and runner-based deployment tests

Dockerfile

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+FROM node:22-alpine AS build
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM mcr.microsoft.com/playwright:v1.58.2-noble AS browser-tests
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY tests ./tests
+COPY src/navigation.ts ./src/navigation.ts
+COPY playwright.config.ts ./
+CMD ["npm", "run", "test:ci"]
+
+FROM nginx:1.27-alpine AS runtime
+COPY --from=build /app/dist /usr/share/nginx/html
+COPY deploy/default.conf.template /etc/nginx/templates/default.conf.template
+ENV API_UPSTREAM=http://host.docker.internal:18080
+EXPOSE 80
+HEALTHCHECK --interval=10s --timeout=3s CMD wget -q -O /dev/null http://127.0.0.1/healthz || exit 1