fix: avoid grep extended regex through orb shell quoting

The pattern `grep -vE '-(beta|rc|alpha)'` breaks when passed through
orb's intermediate shell layer — single quotes are stripped and grep
sees `-(` as an invalid option. Use `grep -v -e '-beta' -e '-rc'
-e '-alpha'` instead, which avoids parentheses entirely and works
reliably across shell quoting layers.

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

Author: aaajiao

openclaw-orbstack-setup.sh

@@ -215,7 +215,7 @@ else
 fi
 
 # Get latest stable release tag (skip beta/rc/alpha pre-releases)
-OPENCLAW_VERSION=$(vm_exec "cd ~/openclaw && git tag -l 'v*' | grep -vE '-(beta|rc|alpha)' | sort -V | tail -1")
+OPENCLAW_VERSION=$(vm_exec "cd ~/openclaw && git tag -l 'v*' | grep -v -e '-beta' -e '-rc' -e '-alpha' | sort -V | tail -1")
 info "$(printf "$MSG_INFO_CHECKOUT_RELEASE" "$OPENCLAW_VERSION")"
 vm_exec "cd ~/openclaw && git checkout '$OPENCLAW_VERSION'"
 

scripts/commands/update.sh

@@ -80,7 +80,7 @@ orb -m "$OPENCLAW_VM_NAME" bash -lc "openclaw gateway stop"
 
 echo "$MSG_CMD_UPDATE_PULLING"
 orb -m "$OPENCLAW_VM_NAME" bash -lc "cd ~/openclaw && git fetch --tags"
-LATEST_TAG=$(orb -m "$OPENCLAW_VM_NAME" bash -lc "cd ~/openclaw && git tag -l 'v*' | grep -vE '-(beta|rc|alpha)' | sort -V | tail -1")
+LATEST_TAG=$(orb -m "$OPENCLAW_VM_NAME" bash -lc "cd ~/openclaw && git tag -l 'v*' | grep -v -e '-beta' -e '-rc' -e '-alpha' | sort -V | tail -1")
 echo "  -> $LATEST_TAG"
 orb -m "$OPENCLAW_VM_NAME" bash -lc "cd ~/openclaw && git checkout '$LATEST_TAG'"