build: fail fast on stalled npm fetches in the image build

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Dockerfile

@@ -2,7 +2,8 @@
 FROM node:22.23.4-alpine AS build
 WORKDIR /app
 COPY package.json package-lock.json ./
-RUN npm ci
+# Fail fast and retry on a stalled registry fetch (npm defaults can hang ~10 min).
+RUN npm ci --fetch-timeout=60000 --fetch-retries=5 --fetch-retry-mintimeout=2000 --no-audit --no-fund
 COPY . .
 ARG GIT_SHA=dev
 ENV VITE_GIT_SHA=${GIT_SHA}