Trailmark Review Gate Apply deterministic security gate rules to Trailmark structural diff evidence. This skill does not replace line-level review. It produces a compact structural packet reviewers can cite while they inspect the code. When to Use - Reviewing a branch, pull request, release diff, or fix commit - Checking whether a change expands attack surface - Looking for removed validation or authorization on reachable paths - Comparing before/after taint, privilege-boundary, blast-radius, or complexity signals - Producing graph evidence for a differential review When NOT to Use - Single-s…