Regenerate Containerfile to sync pnpm install with fragment

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: iwillig

Containerfile

@@ -117,7 +117,7 @@ RUN mkdir -p /var/roothome && \
     ostree container commit
 # Pi coding agent — use dnf5 (not rpm-ostree) so nodejs is immediately available
 # for the subsequent npm call within the same RUN step
-RUN dnf5 install -y nodejs && \
+RUN dnf5 install -y nodejs pnpm && \
     dnf5 clean all && \
     npm install -g --prefix /usr --ignore-scripts @earendil-works/pi-coding-agent && \
     ostree container commit