# #1099 — pipefail + early-exit sweep

## Scope and decisions

- Baseline `df4c591ab42aa1ae62c12935fdc0e772684864a0`, after #1100 removed its 35 sites.
- Split into review-sized non-closing tranches: runtime/general; tmux/git/quality tests; wake validation/tests.
- Do not equate class membership with demonstrated risk. Do not use payload size or pipeline stage count as a safety proxy.
- Preserve the issue's withdrawn findings for `qa-hook-stdin.sh` and the two fresh-directory `pnpm pack` lookups. Fix `install.sh:312` because malformed multi-root input must reach its named handler.

## Tranche 1 TDD

RED-first control: `node --test scripts/pipefail-early-exit.test.mjs` reported exactly 26 non-accepted runtime/general sites, including `install.sh:312`, and exited 1. A checked-in fixture generated from immutable baseline `df4c591a` records all 26 normalized sites; the control passes every fixture entry through the same scanner, asserts exact identity/count/uniqueness, and separately requires zero findings in the current tree. It also inventories accepted sites rather than silently excluding whole files.

Construction choices:

- here-string/file redirection for scalar grep assertions;
- full capture then parameter expansion for first-line selection;
- arrays/`mapfile` for complete populations;
- direct jq/awk/grep selection where one tool can express the property;
- no `|| true` added to a load-bearing assertion.

Site-by-site verdicts: `docs/reports/quality/1099-pipefail-sweep.md`.

## Tranche 2 TDD

Expanded the unconditional scanner over 11 non-wake test harnesses. RED named exactly 22 source lines; a second immutable-baseline fixture now asserts those 22 entries through the same scanner. Rewrites preserve command status by capturing producers before redirected assertions, use parameter expansion for line selection, and use complete `mapfile` populations where ordering matters. Current-tree finding count is zero for tranches 1 and 2.

## Verification so far

- `bash -n` on every changed shell script: pass.
- structural Node control: pass.
- `test-mutate-push-guard.sh`: 8/8 pass.
- `test-send-message-verdict.sh`: 3/3 pass.
- `test-send-message-socket.sh`: pass.
- Independent review 143 found two semantic regressions: a help-probe `|| true` changed the failure truth table, and an unguarded Git capture changed non-Git data-dir behavior from rc 0 + JSON to silent rc 128. Both received RED-first regressions before correction; help status is now separate and required, and Git status remains condition-guarded.
- Wake detector/reconcile/digest/preimage suites terminate at their existing fail-closed #973 `BASH_LINENO` environment probe (exit 97, observed `[3 5]`, expected `[3 4]`) before subject tests. No bypass or skip was used; canonical CI remains required.
- ShellCheck reports only pre-existing source-following, unused-variable, and untouched `ls | head` findings; no new diagnostic was introduced.
