performance-engineering

CRITICAL E004: Prompt injection detected in skill instructions.

• Potential prompt injection detected (high risk: 0.70). The "Companion check" tells the agent to run local shell commands and offer to install companion skills (ls ~/.claude/skills/... and npx skills add ...), which are operational instructions unrelated to performance-engineering and instruct filesystem access/installation outside the skill's stated purpose, so they are hidden/deceptive behavior beyond the skill's scope.