test(postgres): tolerate expected errors in corrupted-payload tests

Tests 3 and 4 in 41_corrupted_payload.sql and the post-alter apply in
46_schema_hash_mismatch.sql intentionally feed garbage to
cloudsync_payload_apply at the top level and verify the table state
is unchanged. With ON_ERROR_STOP now enabled in CI, these expected
errors aborted the run.

Wrap each intentional-error call in \set ON_ERROR_STOP off / on so
psql keeps going while the integrity assertions below still execute.
Drop the psql:.*ERROR arm of the workflow grep — ON_ERROR_STOP and
the [FAIL] grep already cover unexpected failures, and the dropped
arm would false-positive on the now-tolerated stderr lines.

Author: andinux

.github/workflows/main.yml

@@ -277,7 +277,7 @@ jobs:
           docker exec cloudsync-postgres mkdir -p /tmp/cloudsync/test
           docker cp test/postgresql cloudsync-postgres:/tmp/cloudsync/test/postgresql
           docker exec cloudsync-postgres psql -v ON_ERROR_STOP=on -U postgres -d postgres -f /tmp/cloudsync/test/postgresql/full_test.sql 2>&1 | tee /tmp/pgtest.log
-          if grep -Eq '^(\[FAIL\]|psql:.*ERROR)' /tmp/pgtest.log; then
+          if grep -q '^\[FAIL\]' /tmp/pgtest.log; then
             echo "::error::PostgreSQL test failures detected"
             exit 1
           fi

test/postgresql/41_corrupted_payload.sql

@@ -76,8 +76,10 @@ SELECT (:fail::int + 1) AS fail \gset
 -- Test 3: Truncated payload (first 10 bytes of valid payload)
 -- Build truncated hex at top level using psql variable interpolation
 SELECT substr(:'valid_payload_hex', 1, 20) AS truncated_hex \gset
+-- Expected: error on truncated payload — locally disable ON_ERROR_STOP
+\set ON_ERROR_STOP off
 SELECT cloudsync_payload_apply(decode(:'truncated_hex', 'hex')) AS _apply_truncated \gset
--- If the above errors, psql continues (ON_ERROR_STOP is off)
+\set ON_ERROR_STOP on
 
 SELECT COUNT(*) AS count_after_truncated FROM test_tbl \gset
 SELECT (:count_after_truncated::int = :initial_count::int) AS truncated_ok \gset
@@ -95,8 +97,10 @@ SELECT
   || lpad(to_hex(get_byte(decode(substr(:'valid_payload_hex', length(:'valid_payload_hex') / 2, 2), 'hex'), 0) # 255), 2, '0')
   || substr(:'valid_payload_hex', length(:'valid_payload_hex') / 2 + 2)
   AS corrupted_hex \gset
+-- Expected: error on corrupted payload — locally disable ON_ERROR_STOP
+\set ON_ERROR_STOP off
 SELECT cloudsync_payload_apply(decode(:'corrupted_hex', 'hex')) AS _apply_corrupted \gset
--- If the above errors, psql continues (ON_ERROR_STOP is off)
+\set ON_ERROR_STOP on
 
 SELECT COUNT(*) AS count_after_flipped FROM test_tbl \gset
 SELECT (:count_after_flipped::int = :initial_count::int) AS flipped_ok \gset

test/postgresql/46_schema_hash_mismatch.sql

@@ -61,11 +61,10 @@ WHERE site_id = cloudsync_siteid() \gset
 SELECT cloudsync_init('test_tbl', 'CLS', 1) AS _reinit_dst \gset
 
 -- The apply may error due to schema mismatch, or succeed silently.
--- Either outcome is acceptable — the key is no corruption.
-\set apply_ok true
+-- Either outcome is acceptable — the key is no corruption (verified below).
+\set ON_ERROR_STOP off
 SELECT cloudsync_payload_apply(decode(:'payload_post_alter', 'hex')) AS _apply_mismatch \gset
--- If the above errors, psql continues (ON_ERROR_STOP is off) and apply_ok stays true.
--- The test just verifies integrity below.
+\set ON_ERROR_STOP on
 
 -- Verify database is in a consistent state (not corrupted)
 SELECT COUNT(*) AS final_count FROM test_tbl \gset