fix: pass all args to cargo test in integration test script

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/run-integration-tests.sh

@@ -4,8 +4,13 @@
 # Starts a Postgres container, runs tests, then cleans up.
 #
 # Usage:
-#   ./scripts/run-integration-tests.sh           # run all integration tests
-#   ./scripts/run-integration-tests.sh pipeline   # run only pipeline_test
+#   ./scripts/run-integration-tests.sh                                          # all tests
+#   ./scripts/run-integration-tests.sh --test pipeline_test                     # one test file
+#   ./scripts/run-integration-tests.sh --test api_admin_test config_providers   # one test by name
+#   ./scripts/run-integration-tests.sh --test api_admin_test -- --test-threads=1  # extra cargo args
+#   ./scripts/run-integration-tests.sh --lib                                    # unit tests only
+#
+# All arguments are passed directly to `cargo test`.
 #
 
 set -euo pipefail
@@ -58,11 +63,11 @@ echo "=== Running integration tests ==="
 cd "$PROJECT_DIR/backend"
 
 if [ $# -gt 0 ]; then
-    echo "Running: cargo test --test $1 -- --nocapture"
-    cargo test --test "$1" -- --nocapture
+    echo "Running: cargo test $*"
+    cargo test "$@"
 else
     echo "Running: cargo test (all integration + unit tests)"
-    cargo test -- --nocapture
+    cargo test
 fi
 
 echo "=== All tests passed ==="