fix(deploy): exclude venv/ from push-workers rsync

The prod venv at /opt/void-workers/venv was being deleted on every
push because rsync --delete saw no matching dir in the source (which
has .venv/, not venv/). Now both names are excluded.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

deploy/push-workers.sh

@@ -9,6 +9,7 @@ REMOTE_DIR=${REMOTE_DIR:-/opt/void-workers}
 
 rsync -avz --delete \
   --exclude .venv \
+  --exclude venv \
   --exclude __pycache__ \
   --exclude '*.egg-info' \
   --exclude tests \