+The shell launcher removes Node preload hooks before starting the router. The router then builds a strict child environment, rejects reviewer pushes and every reviewer mutation except a comment-only review on the recorded PR, and rejects approvals, change requests, merges, executor-authored reviews, GraphQL, and administration APIs. Reviewer publication requires the next run/cycle/round marker; the gate paginates existing reviews and rejects duplicates, skipped rounds, body files, or an omitted reviewer publication. Body-only reviews use the validated `gh pr review --comment` shape. Inline reviews must use the installed `publish-review.mjs`; it accepts only canonical comment JSON, validates the durable exact head and finding markers, and is the sole component allowed to stream a canonical `event=COMMENT` payload to GitHub. Authenticated Git disables worktree hooks, fsmonitor, external diff, textconv, proxy environment variables, repository-local HTTP/proxy/cookie/header/SSL/URL rewrites, and the `ext` transport. Remote Git is restricted to exact origin push/fetch/issue-branch discovery shapes and executes against a canonical configured-repository HTTPS URL. Automation API mutations are limited to the current issue's exact claim label, the current issue/PR or journal comments, and current-PR review-comment replies. PR bodies and comments must be inline; body files, arbitrary API input files, and typed `@file` expansion are rejected. PR creation requires the durably authorized issue or published evolve request branch, explicit `--repo codeacme17/echo-ui`, `--base dev`, and `--draft`; later PR writes require the same explicit repository (or full configured PR URL), the exact durable checkpoint, the recorded live PR branch/base/head, and the phase-specific Draft/evidence/review gates. `pr edit` is limited to title/body updates and requesting `codeacme17`; non-`--undo` `pr ready` is rejected because only the owner may mark a Draft Ready. Issue pushes derive `codex/issue-<number>` from the durable checkpoint, require a clean exact local issue branch whose post-`$implement` commits contain only the current run's evidence paths, and reject local branch overrides; evolve pushes require the automation-authored request publication. Every other push shape is rejected.
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