Three small, non-overlapping fixes extracted from closed PR #1664:
1. canvas/src/components/ContextMenu.tsx — Replace the useMemo-over-nodes
pattern with a hashed-boolean selector (s.nodes.some(...)) so Zustand's
useSyncExternalStore snapshot comparison is stable. Resolves React
error #185 (infinite render loop). Moves the child-node list derivation
into the delete handler via getState() so the render path no longer
allocates a fresh array.
2. workspace-server/internal/handlers/a2a_proxy.go — Allow the
Docker-bridge hostname path (ws-<id>:8000) to skip the SSRF guard in
local-docker mode. Gated on !saasMode() so SaaS deployments keep the
full private-IP blocklist (a remote workspace registration can't claim
a ws-* hostname and reach a sensitive VPC IP).
3. workspace-server/Dockerfile — Add entrypoint.sh that discovers the
docker.sock GID at boot and adds the platform user to that group, then
exec's su-exec to drop privileges. Lets the platform container reach
the host docker socket without running as root.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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