fix: move design system dev install after COPY to bust Docker cache

The npm install @cameleer/design-system@dev was in the same cached layer
as npm ci, so Docker never re-ran it when the registry had a new version.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/Dockerfile

@@ -4,12 +4,15 @@ WORKDIR /app
 ARG REGISTRY_TOKEN
 COPY package.json package-lock.json .npmrc ./
 RUN echo "//gitea.siegeln.net/api/packages/cameleer/npm/:_authToken=${REGISTRY_TOKEN}" >> .npmrc && \
-    npm ci && \
-    npm install @cameleer/design-system@dev && \
-    rm -f .npmrc
+    npm ci
 
 COPY . .
 
+# Upgrade design system to latest dev snapshot (after COPY to bust Docker cache)
+RUN echo "//gitea.siegeln.net/api/packages/cameleer/npm/:_authToken=${REGISTRY_TOKEN}" >> .npmrc && \
+    npm install @cameleer/design-system@dev && \
+    rm -f .npmrc
+
 ARG VITE_ENV_NAME=PRODUCTION
 ENV VITE_ENV_NAME=$VITE_ENV_NAME
 RUN npm run build