What problem does it solve? After every slice of a build is individually signed off, there is no final check that the whole structure holds together against its base commit. This Skill performs that capstone inspection: it gates on all slices being signed off, reviews the entire vertical with fresh local subagent reviewers plus optional outside models (GPT, Gemini, DeepSeek, Qwen), verifies every outside finding against the source, and writes one dated verdict doc. ## Core Features & Use Cases - Hard gate and preconditions: Refuses to run unless every slice stands signed off, the repo is a git repo, and the working tree is clean where the review looks; only the user's explicit invocation can collapse the gate. - Cold outside review with secrets physically absent: Outside reviewers receive a tracked-files-only git archive export (excluding docs/reviews/ and REVIEW.md), the build doc, and the change boundary — never the live working tree, prior verdicts, or chat context. - Verified merge, one verdict doc: Every outside finding is adversarially verified against the source before reaching the verdict; refuted findings are counted (Refuted: N) and quarantined in a raw appendix, and the verdict is appended to docs/reviews/<date>-vertical-<feature>.md. - Use Case: After a multi-slice feature build completes the blueprint → build → signoff → recheck loop, run /vertical to get a final SIGNED OFF / REJECTED verdict on the whole build before shipping. ## Quick Start Say "run the vertical" or "/vertical" on a completed build doc and answer the reviewer-selection prompt to get a verified whole-build verdict doc.