fix: copy frontend/browserslist into Docker build context

Without this file present in /app/frontend during the production build,
Angular falls back to the default browserslist (broader, older browser
targets), which forces extra transpilation and inflates the initial
bundle past the 5MB budget. Copying the committed browserslist preserves
the intended modern targets and keeps the bundle within budget.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: gugu

Dockerfile

@@ -3,7 +3,7 @@ ARG VERSION
 ARG SAAS
 SHELL ["/bin/bash", "-c"]
 WORKDIR /app/frontend
-COPY frontend/package.json frontend/yarn.lock frontend/angular.json frontend/tsconfig.app.json frontend/tsconfig.json /app/frontend/
+COPY frontend/package.json frontend/yarn.lock frontend/angular.json frontend/browserslist frontend/tsconfig.app.json frontend/tsconfig.json /app/frontend/
 COPY frontend/.yarn /app/frontend/.yarn
 RUN apt-get update && apt-get install -y \
     git \