Read-only second opinion from Claude Code (claude -p). Use when the user explicitly asks ("ask Claude", "second opinion", "/consult-claude") OR when a HARD GATE passes: high-stakes architecture/security decisions, 2+ credible approaches with real trade-offs, or blocked after 2+ distinct attempts. Modes: plan, review, advice. Do NOT use for routine coding, debugging, file edits, or "just to be thorough". Grok implements any follow-up changes.
