Add CI test script and update workflow

.github/workflows/python-ci.yml

@@ -81,10 +81,15 @@ jobs:
         if: github.ref == 'refs/heads/main' || github.event_name == 'schedule'
         run: echo "NOSTR_E2E=1" >> $GITHUB_ENV
       - name: Run tests with coverage
+        timeout-minutes: 16
         shell: bash
-        run: |
-          pytest ${STRESS_ARGS} --cov=src --cov-report=xml --cov-report=term-missing \
-            --cov-fail-under=20 src/tests
+        run: scripts/run_ci_tests.sh
+      - name: Upload pytest log
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: pytest-log-${{ matrix.os }}
+          path: pytest.log
       - name: Upload coverage report
         uses: actions/upload-artifact@v4
         with:

scripts/run_ci_tests.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -eo pipefail
+timeout 15m pytest -vv ${STRESS_ARGS} \
+    --cov=src --cov-report=xml --cov-report=term-missing \
+    --cov-fail-under=20 src/tests 2>&1 | tee pytest.log
+status=${PIPESTATUS[0]}
+if [[ $status -eq 124 ]]; then
+    echo "::error::Tests exceeded 15-minute limit"
+    tail -n 20 pytest.log
+    exit 1
+fi
+exit $status