forked from bchanot/claude
Layer C of the plan written after the 2026-09-21 wipe (BDR-095): a reviewer sub-agent traced `lftp mirror --delete` against a local file:// tree, the prose tiers named neither lftp nor a local trace, the brief had authorized it, and four days of commits had never left the machine. - gitflow: `start` pushes the branch with its upstream, merge targets are pushed after each merge, and `init`/`install-hook` write post-commit and post-merge hooks that push every commit as it lands (warn, never block; GITFLOW_NO_PUSH=1 for throwaway repos). T18 + T19 (installed == emitted). - hooks/unpushed-guard.sh on SessionStart and Stop: branch ahead of its upstream, no upstream, or no origin. Non-blocking systemMessage. - settings.json: static deny for transfer and mirror tools, rsync --delete, xargs rm, pipe-to-shell, chmod/chown -R, sudo/doas/pkexec, disk tools, chattr, docker volume drops/prune/--privileged/socket/-v /:, git history destruction, --no-verify and core.hooksPath; new hard_deny "destructive tool against a local path, brief carries no user authority"; soft_deny reworded + discarding uncommitted work; environment records the incident. - CLAUDE.global.md "Destructive tools & data loss"; the four report-only agents trace by reading, never by running, whatever the brief says. - lib/tests/guard-bash.test.sh: executable spec of the PreToolUse guard (214 cases). The hook itself is not shipped (BLK-022); the spec skips.