diff --git a/docs/reports/quality/1099-pipefail-sweep.md b/docs/reports/quality/1099-pipefail-sweep.md
index 0519b72b..798356ba 100644
--- a/docs/reports/quality/1099-pipefail-sweep.md
+++ b/docs/reports/quality/1099-pipefail-sweep.md
@@ -69,4 +69,15 @@ All 22 baseline sites below are `FIXED`; the checked-in tranche fixture is passe
 | `tmux/test-send-message-socket.sh:37,38,44-46,68,72` | FIXED | capture commands complete before redirected grep assertions |
 | `tmux/test-send-message-verdict.sh:34` | FIXED | grep reads from a here-string |
 
-Remaining wake-validation sites are intentionally deferred to the final review-sized tranche and are not yet assigned a safety verdict here.
+## Tranche 3 — wake validation harnesses
+
+All 26 baseline occurrences (25 normalized identities; one preimage selector occurs twice) are `FIXED` and mechanically bound through the wake fixture and shared scanner.
+
+| Baseline site(s) | Verdict | Construction |
+| --- | --- | --- |
+| `wake/test-wake-digest-quarantine.sh:567` | FIXED | complete match populations are captured, then first line selected by parameter expansion |
+| `wake/test-wake-preimage.sh:182-183,346-347` | FIXED | jq `first(...)` reads each JSONL file directly |
+| `wake/validate-973/microtest-wake-assert.sh:153,170-171,176,204-209,233-234,251-252,286-287` | FIXED | scalar assertions use here-strings; diagnostics use non-early sed ranges; source line captured before matching |
+| `wake/validate-973/validate-973.sh:110,119,180,182,187` | FIXED | scalar assertions use here-strings; diagnostic truncation uses consuming sed ranges |
+
+The scoped inventory is complete: 26 runtime/general + 22 non-wake tests + 26 wake tests fixed; 11 explicitly withdrawn or non-load-bearing sites retain their documented verdicts.
diff --git a/docs/scratchpads/1099-pipefail-sweep.md b/docs/scratchpads/1099-pipefail-sweep.md
index 30548805..e8040d77 100644
--- a/docs/scratchpads/1099-pipefail-sweep.md
+++ b/docs/scratchpads/1099-pipefail-sweep.md
@@ -25,6 +25,10 @@ Site-by-site verdicts: `docs/reports/quality/1099-pipefail-sweep.md`.
 
 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.
 
+## Tranche 3 TDD
+
+Expanded the shared scanner over four wake validation harnesses. RED named 26 occurrences. The wake fixture asserts 26 occurrences / 25 normalized identities through the same scanner; all scalar assertions now use redirection, direct jq selection, complete capture, or consuming diagnostic ranges. Current-tree finding count is zero across the full scoped population.
+
 ## Verification so far
 
 - `bash -n` on every changed shell script: pass.
@@ -33,5 +37,5 @@ Expanded the unconditional scanner over 11 non-wake test harnesses. RED named ex
 - `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.
+- Wake static inventory remains aligned at 261/261 after line-neutral rewrites; no static-set mismatch. 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.
diff --git a/packages/mosaic/framework/tools/wake/test-wake-digest-quarantine.sh b/packages/mosaic/framework/tools/wake/test-wake-digest-quarantine.sh
index a51e0b23..8f9da158 100755
--- a/packages/mosaic/framework/tools/wake/test-wake-digest-quarantine.sh
+++ b/packages/mosaic/framework/tools/wake/test-wake-digest-quarantine.sh
@@ -564,7 +564,7 @@ echo "== Q16 (guard): Q2's ENUM-B fixture must STAY address-free — the reconci
   # Token concatenated so THIS guard's own source lines never contain the
   # literal fixture id and cannot self-match.
   enum_id='ENUM''-B'
-  fixture_line="$(has_match -F "\"id\":\"$enum_id\"" "$self" | has_match -F '"observed_seq":5' | head -n1)"
+  fixture_lines="$(has_match -F "\"id\":\"$enum_id\"" "$self")"; fixture_matches="$(has_match -F '"observed_seq":5' <<<"$fixture_lines")"; fixture_line="${fixture_matches%%$'\n'*}"
   [ -n "$fixture_line" ] || fail_msg "Q16: could not locate Q2's $enum_id fixture line (renamed/renumbered? update this guard)"
   fixture_json="$(printf '%s' "$fixture_line" | sed "s/.*'\({.*}\)'.*/\1/")"
   # Positive controls FIRST (blind-instrument rule): the extraction must yield
diff --git a/packages/mosaic/framework/tools/wake/test-wake-preimage.sh b/packages/mosaic/framework/tools/wake/test-wake-preimage.sh
index 913d6b05..ba8a021c 100755
--- a/packages/mosaic/framework/tools/wake/test-wake-preimage.sh
+++ b/packages/mosaic/framework/tools/wake/test-wake-preimage.sh
@@ -179,8 +179,8 @@ echo "== P3: detector orders the cause line BEFORE the delta it explains =="
   printf 'r1 state v2\n' >"$fx/repo_r1"
   "$DET" poll-once >/dev/null 2>&1 || fail_msg "P3: second poll failed"
   sd="$(state_dir)"
-  pre_seq="$(jq -r 'select(.locators.kind == "preimage") | .observed_seq' "$sd/pending.jsonl" | head -n1)"
-  src_seq="$(jq -r 'select(.locators.kind == "repo") | .observed_seq' "$sd/pending.jsonl" | head -n1)"
+  pre_seq="$(jq -nr 'first(inputs | select(.locators.kind == "preimage") | .observed_seq) // empty' "$sd/pending.jsonl")"
+  src_seq="$(jq -nr 'first(inputs | select(.locators.kind == "repo") | .observed_seq) // empty' "$sd/pending.jsonl")"
   [ -n "$pre_seq" ] || fail_msg "P3: no preimage cause entry enqueued"
   [ -n "$src_seq" ] || fail_msg "P3: no source delta entry enqueued"
   if [ -n "$pre_seq" ] && [ -n "$src_seq" ]; then
@@ -343,8 +343,8 @@ echo "== P11: reconcile surfaces the cause line before its enumerations =="
   printf '# adapter changed while detector down\n' >>"$fx/adapter.sh"
   "$RECON" reconcile >/dev/null 2>&1 # rc 1 expected (unaccounted enumerated)
   sd="$(state_dir)"
-  pre_seq="$(jq -r 'select(.locators.kind == "preimage") | .observed_seq' "$sd/pending.jsonl" | head -n1)"
-  enum_seq="$(jq -r 'select(.locators.reconciled == true) | .observed_seq' "$sd/pending.jsonl" | head -n1)"
+  pre_seq="$(jq -nr 'first(inputs | select(.locators.kind == "preimage") | .observed_seq) // empty' "$sd/pending.jsonl")"
+  enum_seq="$(jq -nr 'first(inputs | select(.locators.reconciled == true) | .observed_seq) // empty' "$sd/pending.jsonl")"
   [ -n "$pre_seq" ] || fail_msg "P11: reconcile must enqueue the preimage cause line"
   [ -n "$enum_seq" ] || fail_msg "P11: reconcile must still enumerate the unaccounted source"
   if [ -n "$pre_seq" ] && [ -n "$enum_seq" ]; then
diff --git a/packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh b/packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh
index bec281ae..c48e817a 100755
--- a/packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh
+++ b/packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh
@@ -150,7 +150,7 @@ site_line() { # site_line FILE MARKER -> first physical line of that call
   local f="$1" marker="$2" ln
   ln="$(grep -n "# SITE:${marker}\$" "$f" | cut -d: -f1)"
   # continuation marker sits on the tail line; the call starts one line up
-  if ! sed -n "${ln}p" "$f" | grep -Eq 'has_match|count_lines'; then
+  source_line="$(sed -n "${ln}p" "$f")"; if ! grep -Eq 'has_match|count_lines' <<<"$source_line"; then
     ln=$((ln - 1))
   fi
   printf '%s' "$ln"
@@ -167,13 +167,13 @@ rcB=$?
 sort "$LEDGER" >"$TMP/got-c1"
 n_expected="$(grep -c . "$TMP/expected-c1")"
 if [ "$rcA" -eq 0 ] && [ "$rcB" -eq 0 ] &&
-  printf '%s' "$outA" | grep -q 'mini-a: OK' &&
-  printf '%s' "$outB" | grep -q 'mini-b: OK' &&
+  grep -q 'mini-a: OK'  <<<"$outA"&&
+  grep -q 'mini-b: OK'  <<<"$outB"&&
   [ "$n_expected" -gt 1 ] &&
   cmp -s "$TMP/expected-c1" "$TMP/got-c1"; then
   check C1 0 ""
 else
-  check C1 1 "rcA=$rcA rcB=$rcB expected($n_expected)/got diff: $(diff "$TMP/expected-c1" "$TMP/got-c1" 2>&1 | head -n 10 | tr '\n' ' ')"
+  check C1 1 "rcA=$rcA rcB=$rcB expected($n_expected)/got diff: $(diff "$TMP/expected-c1" "$TMP/got-c1" 2>&1 | sed -n '1,10p' | tr '\n' ' ')"
 fi
 
 # --- C2: early exit -> short ledger, comparison catches it -----------------
@@ -201,12 +201,12 @@ abort_case() { # abort_case NAME MARKER HELPER
     bash "$TMP/mini-a.sh" "$TMP" 2>&1)"
   rc=$?
   if [ "$rc" -ne 0 ] &&
-    ! printf '%s' "$out" | grep -q 'mini-a: OK' &&
-    ! printf '%s' "$out" | grep -q 'mini-a: FAILED' &&
-    printf '%s' "$out" | grep -q "WAKE-ASSERT ARMED: forcing real grep error at $site" &&
-    printf '%s' "$out" | grep -q "WAKE-ASSERT ABORT" &&
-    printf '%s' "$out" | grep -q "$site" &&
-    printf '%s' "$out" | grep -q "grep exit 2" &&
+    ! grep -q 'mini-a: OK'  <<<"$out"&&
+    ! grep -q 'mini-a: FAILED'  <<<"$out"&&
+    grep -q "WAKE-ASSERT ARMED: forcing real grep error at $site"  <<<"$out"&&
+    grep -q "WAKE-ASSERT ABORT"  <<<"$out"&&
+    grep -q "$site"  <<<"$out"&&
+    grep -q "grep exit 2"  <<<"$out"&&
     grep -q "^${helper} ${site}\$" "$ledger"; then
     check "$name" 0 ""
   else
@@ -230,8 +230,8 @@ if [ "$got" = "1" ]; then check C8 0 ""; else check C8 1 "env-prefix did not rea
 out="$(WAKE_ASSERT_FORCE_GREP_ERROR_AT="mini-a.sh:9999" bash "$TMP/mini-a.sh" "$TMP" 2>&1)"
 rc=$?
 if [ "$rc" -eq 0 ] &&
-  printf '%s' "$out" | grep -q 'mini-a: OK' &&
-  ! printf '%s' "$out" | grep -q 'WAKE-ASSERT ARMED'; then
+  grep -q 'mini-a: OK'  <<<"$out"&&
+  ! grep -q 'WAKE-ASSERT ARMED' <<<"$out"; then
   check C9 0 ""
 else
   check C9 1 "rc=$rc out=$(printf '%s' "$out" | tail -n 3 | tr '\n' ' ')"
@@ -248,8 +248,8 @@ chmod +x "$TMP/fake-bash"
 out="$(WAKE_ASSERT_PIN_BASH="$TMP/fake-bash" bash -c '. "$WAKE_COMMON" && wake_assert_init && echo REACHED-PAST-INIT' 2>&1)"
 rc=$?
 if [ "$rc" -ne 0 ] &&
-  ! printf '%s' "$out" | grep -q 'REACHED-PAST-INIT' &&
-  printf '%s' "$out" | grep -q 'WAKE-ASSERT INIT ABORT: BASH_LINENO convention violated'; then
+  ! grep -q 'REACHED-PAST-INIT'  <<<"$out"&&
+  grep -q 'WAKE-ASSERT INIT ABORT: BASH_LINENO convention violated' <<<"$out"; then
   check C10 0 ""
 else
   check C10 1 "rc=$rc out=$(printf '%s' "$out" | tail -n 2 | tr '\n' ' ')"
@@ -283,8 +283,8 @@ out="$(WAKE_ASSERT_LEDGER="$LEDGER" bash "$TMP/mini-c.sh" "$TMP" 2>&1)"
 rc=$?
 summary_ln="$(site_line "$TMP/mini-c.sh" c-summary)"
 if [ "$rc" -eq 1 ] &&
-  printf '%s' "$out" | grep -q 'wake mini-c harness: FAILED (1 assertion(s))' &&
-  ! printf '%s' "$out" | grep -q 'all invariants passed' &&
+  grep -q 'wake mini-c harness: FAILED (1 assertion(s))'  <<<"$out"&&
+  ! grep -q 'all invariants passed'  <<<"$out"&&
   grep -q "^count_lines mini-c.sh:${summary_ln}\$" "$LEDGER"; then
   check C11 0 ""
 else
diff --git a/packages/mosaic/framework/tools/wake/validate-973/validate-973.sh b/packages/mosaic/framework/tools/wake/validate-973/validate-973.sh
index 177f535a..2b38d322 100755
--- a/packages/mosaic/framework/tools/wake/validate-973/validate-973.sh
+++ b/packages/mosaic/framework/tools/wake/validate-973/validate-973.sh
@@ -107,7 +107,7 @@ if cmp -s "$TMP/expected.txt" "$TMP/static.txt"; then
   echo "STATIC-INVENTORY equals expected set ($(grep -c . "$TMP/static.txt") rows from source text)"
 else
   flag "static inventory (source text) differs from expected set (artifact):"
-  diff "$TMP/expected.txt" "$TMP/static.txt" | head -n 20 | sed 's/^/  /'
+  diff "$TMP/expected.txt" "$TMP/static.txt" | sed -n '1,20p' | sed 's/^/  /'
 fi
 
 # --- 3: green instrumented run ----------------------------------------------
@@ -116,7 +116,7 @@ LEDGER="$TMP/ledger"
 for s in "${SUITES[@]}"; do
   out="$(WAKE_ASSERT_LEDGER="$LEDGER" bash "$WAKE/$s" 2>&1)"
   rc=$?
-  if printf '%s\n' "$out" | grep -Eq "$(sentinel_for "$s")"; then
+  if grep -Eq "$(sentinel_for "$s")" <<<"$out"; then
     sent="present"
   else
     sent="ABSENT"
@@ -177,14 +177,14 @@ while read -r helper site form; do
   rc=$?
   bad=""
   [ "$rc" -ne 0 ] || bad="$bad exit=0"
-  printf '%s\n' "$out" | grep -q "WAKE-ASSERT ARMED: forcing real grep error at $site" ||
+  grep -q "WAKE-ASSERT ARMED: forcing real grep error at $site"  <<<"$out"||
     bad="$bad no-ARMED-line"
-  printf '%s\n' "$out" | grep -q "WAKE-ASSERT ABORT: ${helper} at ${site}: grep exit" ||
+  grep -q "WAKE-ASSERT ABORT: ${helper} at ${site}: grep exit"  <<<"$out"||
     bad="$bad no-ABORT-line"
   # AND-polarity check (a match is the defect): a grep error (rc>=2) must be
   # its own loud arm — it cannot fall through as "no sentinel = pass".
   rc_sent=0
-  printf '%s\n' "$out" | grep -Eq "$(sentinel_for "$f")" || rc_sent=$?
+  grep -Eq "$(sentinel_for "$f")"  <<<"$out"|| rc_sent=$?
   case "$rc_sent" in
   0) bad="$bad sentinel-emitted" ;;
   1) : ;;
diff --git a/scripts/fixtures/pipefail-early-exit-wake-baseline.json b/scripts/fixtures/pipefail-early-exit-wake-baseline.json
new file mode 100644
index 00000000..9f6b2dd5
--- /dev/null
+++ b/scripts/fixtures/pipefail-early-exit-wake-baseline.json
@@ -0,0 +1,28 @@
+[
+  "packages/mosaic/framework/tools/wake/test-wake-digest-quarantine.sh:fixture_line=\"$(has_match -F \"\\\"id\\\":\\\"$enum_id\\\"\" \"$self\" | has_match -F '\"observed_seq\":5' | head -n1)\"",
+  "packages/mosaic/framework/tools/wake/test-wake-preimage.sh:pre_seq=\"$(jq -r 'select(.locators.kind == \"preimage\") | .observed_seq' \"$sd/pending.jsonl\" | head -n1)\"",
+  "packages/mosaic/framework/tools/wake/test-wake-preimage.sh:src_seq=\"$(jq -r 'select(.locators.kind == \"repo\") | .observed_seq' \"$sd/pending.jsonl\" | head -n1)\"",
+  "packages/mosaic/framework/tools/wake/test-wake-preimage.sh:pre_seq=\"$(jq -r 'select(.locators.kind == \"preimage\") | .observed_seq' \"$sd/pending.jsonl\" | head -n1)\"",
+  "packages/mosaic/framework/tools/wake/test-wake-preimage.sh:enum_seq=\"$(jq -r 'select(.locators.reconciled == true) | .observed_seq' \"$sd/pending.jsonl\" | head -n1)\"",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:if ! sed -n \"${ln}p\" \"$f\" | grep -Eq 'has_match|count_lines'; then",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$outA\" | grep -q 'mini-a: OK' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$outB\" | grep -q 'mini-b: OK' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:check C1 1 \"rcA=$rcA rcB=$rcB expected($n_expected)/got diff: $(diff \"$TMP/expected-c1\" \"$TMP/got-c1\" 2>&1 | head -n 10 | tr '\\n' ' ')\"",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:! printf '%s' \"$out\" | grep -q 'mini-a: OK' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:! printf '%s' \"$out\" | grep -q 'mini-a: FAILED' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$out\" | grep -q \"WAKE-ASSERT ARMED: forcing real grep error at $site\" &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$out\" | grep -q \"WAKE-ASSERT ABORT\" &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$out\" | grep -q \"$site\" &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$out\" | grep -q \"grep exit 2\" &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$out\" | grep -q 'mini-a: OK' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:! printf '%s' \"$out\" | grep -q 'WAKE-ASSERT ARMED'; then",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:! printf '%s' \"$out\" | grep -q 'REACHED-PAST-INIT' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$out\" | grep -q 'WAKE-ASSERT INIT ABORT: BASH_LINENO convention violated'; then",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:printf '%s' \"$out\" | grep -q 'wake mini-c harness: FAILED (1 assertion(s))' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh:! printf '%s' \"$out\" | grep -q 'all invariants passed' &&",
+  "packages/mosaic/framework/tools/wake/validate-973/validate-973.sh:diff \"$TMP/expected.txt\" \"$TMP/static.txt\" | head -n 20 | sed 's/^/  /'",
+  "packages/mosaic/framework/tools/wake/validate-973/validate-973.sh:if printf '%s\\n' \"$out\" | grep -Eq \"$(sentinel_for \"$s\")\"; then",
+  "packages/mosaic/framework/tools/wake/validate-973/validate-973.sh:printf '%s\\n' \"$out\" | grep -q \"WAKE-ASSERT ARMED: forcing real grep error at $site\" ||",
+  "packages/mosaic/framework/tools/wake/validate-973/validate-973.sh:printf '%s\\n' \"$out\" | grep -q \"WAKE-ASSERT ABORT: ${helper} at ${site}: grep exit\" ||",
+  "packages/mosaic/framework/tools/wake/validate-973/validate-973.sh:printf '%s\\n' \"$out\" | grep -Eq \"$(sentinel_for \"$f\")\" || rc_sent=$?"
+]
diff --git a/scripts/pipefail-early-exit.test.mjs b/scripts/pipefail-early-exit.test.mjs
index 8de31293..3da7db3d 100644
--- a/scripts/pipefail-early-exit.test.mjs
+++ b/scripts/pipefail-early-exit.test.mjs
@@ -8,6 +8,7 @@ import test from 'node:test';
 const ROOT = new URL('../', import.meta.url);
 const EXPECTED_BASELINE_SITES = 26;
 const EXPECTED_TEST_BASELINE_SITES = 22;
+const EXPECTED_WAKE_BASELINE_SITES = 26;
 const TARGETS = [
   'tools/matrix-presence-harness/run.sh',
   'tools/e2e-install-test.sh',
@@ -37,6 +38,10 @@ const TARGETS = [
   'packages/mosaic/framework/tools/quality/scripts/test-upgrade-rollback.sh',
   'packages/mosaic/framework/tools/tmux/test-send-message-socket.sh',
   'packages/mosaic/framework/tools/tmux/test-send-message-verdict.sh',
+  'packages/mosaic/framework/tools/wake/test-wake-digest-quarantine.sh',
+  'packages/mosaic/framework/tools/wake/test-wake-preimage.sh',
+  'packages/mosaic/framework/tools/wake/validate-973/microtest-wake-assert.sh',
+  'packages/mosaic/framework/tools/wake/validate-973/validate-973.sh',
 ];
 
 // These statuses are explicitly non-load-bearing or unreachable at designed input.
@@ -106,6 +111,14 @@ test('the registered test baseline denominator is exactly 22 unsafe sites', asyn
   );
 });
 
+test('the registered wake baseline denominator is exactly 26 unsafe sites', async () => {
+  await assertBaselineFixture(
+    'scripts/fixtures/pipefail-early-exit-wake-baseline.json',
+    EXPECTED_WAKE_BASELINE_SITES,
+    25,
+  );
+});
+
 test('load-bearing pipefail paths do not pipe into early-exiting consumers', async () => {
   assert.deepEqual(scan(await currentSources()), []);
 });
@@ -138,6 +151,40 @@ test('gateway verify capability preserves the complete help-probe truth table',
   }
 });
 
+test('wake JSONL selectors take the first match across the complete input stream', async () => {
+  const source = await readFile(
+    new URL('packages/mosaic/framework/tools/wake/test-wake-preimage.sh', ROOT),
+    'utf8',
+  );
+  assert.equal((source.match(/jq -nr 'first\(inputs \| select\(/g) ?? []).length, 4);
+
+  const directory = await mkdtemp(path.join(tmpdir(), 'wake-jsonl-first-'));
+  const input = path.join(directory, 'pending.jsonl');
+  const filter = 'first(inputs | select(.locators.kind == "preimage") | .observed_seq) // empty';
+  try {
+    await writeFile(
+      input,
+      '{"locators":{"kind":"repo"},"observed_seq":1}\n' +
+        '{"locators":{"kind":"preimage"},"observed_seq":4}\n' +
+        '{"locators":{"kind":"preimage"},"observed_seq":9}\n',
+    );
+    let result = spawnSync('jq', ['-nr', filter, input], { encoding: 'utf8' });
+    assert.equal(result.status, 0, result.stderr);
+    assert.equal(result.stdout, '4\n');
+
+    await writeFile(input, '{"locators":{"kind":"repo"},"observed_seq":1}\n');
+    result = spawnSync('jq', ['-nr', filter, input], { encoding: 'utf8' });
+    assert.equal(result.status, 0, result.stderr);
+    assert.equal(result.stdout, '');
+
+    await writeFile(input, '{invalid json}\n');
+    result = spawnSync('jq', ['-nr', filter, input], { encoding: 'utf8' });
+    assert.notEqual(result.status, 0);
+  } finally {
+    await rm(directory, { recursive: true, force: true });
+  }
+});
+
 test('board-history preserves non-git data-dir as a non-detectable result', async () => {
   const directory = await mkdtemp(path.join(tmpdir(), 'reflect-board-non-git-'));
   try {