Plan Review Gate

Core principle: No plan reaches the user without surviving 3 adversarial checks.

How it works: This skill runs inline in the calling agent's context (no subagents). The calling LLM reads the plan and checks it against 3 criteria using its Read/Grep/Glob tools. Same LLM, same context — the value is structured adversarial framing, not agent independence.

When to Skip

Skip when plan is trivial: Single-file fix, copy edit, or config tweak with <3 changes → return GATE_PASS immediately.

The 3 Checks (Run in Sequence)

Check 1: Feasibility — Can this be executed against the real codebase?

Run these verifications using Read/Grep/Glob: