Ubuntu's gitleaks 8.16 package has no git subcommand, so the hook's
"unknown command" exit 1 blocked every commit as a leak. Probe
gitleaks git --help once, fall back to protect --staged; regenerate the
installed hooks. T16c simulates a missing binary with a /usr/bin symlink
farm minus gitleaks instead of a shorter PATH.
Global: `make link` generates githooks/ from lib/gitflow.sh and sets git's
global core.hooksPath to ~/.claude/githooks, so every repo on the machine
runs the pre-commit protection and the post-commit / post-merge push, even
one that never ran gitflow init. A repo's own local core.hooksPath still
wins, so hooks/session-start.sh calls `gitflow reconcile-hooks` once per
session and rewrites a .githooks/ that lags the lib (LRN-114 automated);
the pre-commit exemption now covers .githooks/** next to .claude/**.
Per-repo opt-outs for a foreign clone: `git config gitflow.protect false`
(branch model) and `git config gitflow.autopush false` (push). Both, and
the GIT_CONFIG_GLOBAL= / GIT_CONFIG= env bypass, are static deny rules.
`make test` and the two suites that commit on main export
GIT_CONFIG_GLOBAL=/dev/null so the machine's global hooks never fire in
throwaway repos. doctor gains "Git hooks" (global setting, githooks/ equal
to the emitters) and "Scratchpad" (warn when TMPDIR sits on a tmpfs with
usrquota: systemd caps each user at 80% of it, which killed two shells
today, BLK-021). Tests: T18h, T19d, T20 (reconcile), T21 (whitelist and
protect opt-out); this repo's own stale .githooks/ refreshed.
Root cause: job7/17bdd08 added the gitleaks scan to the hook GENERATOR
(_gitflow_emit_pre_commit) but the installed .githooks/pre-commit is only
(re)written by 'gitflow init'/'install-hook' — never invoked on this repo after
job7. No mechanism propagates a generator change to already-installed hooks, and
T10 diffs only the allow/block verdict (not content), so the drift was silent.
The installed hook (620071b, 2026-06-29) predated the gitleaks addition by 8 days.
Regenerated via 'gitflow.sh install-hook'; installed hook now == fresh emit.
Gates: grep -c gitleaks=7; negative test (staged AKIA... on a working branch)
BLOCKED with exit 1; make test GREEN. Review finding A2 (P0). A content-drift
assertion is added to make test in the fil-rouge commit.
bastien