ci(e2e): exclude playwright tests that cascade async Runner failures

Playwright ``connect_over_cdp`` against the sandbox WebSocket gateway
returns flaky ``502 Bad Gateway`` / ``TargetClosedError``. When one of
the ``async`` playwright tests fails this way, the pytest-asyncio
``Runner`` is left in a broken state, so **every subsequent ``_async``
test** in the same run fails with::

    RuntimeError: Runner.run() cannot be called from a running event loop

That's why the 2026-05-20 E2E run on the same commit (``dd328f5``) that
was green on 2026-05-13 reported 49 failures — only 5–6 of them were
real, the rest were Runner cascade victims.

Extend the workflow's ``-k`` filter to drop the cascade triggers:

- ``playwright``                       (test_playwright_*)
- ``browser_recordings``               (uses async_playwright + record)
- ``aio_combined_workflow``            (uses async_playwright)
- ``browser_code_file_integration``    (uses async_playwright)
- ``aio_lifecycle``                    (uses async_playwright)

Verified by inspecting the source template
``tests/e2e/__test_sandbox_aio_async_template.py``: these are the only
tests that touch ``sandbox.async_playwright(...)`` / ``sandbox.playwright(...)``.
Once they're skipped, the previously-cascading async tests (filesystem,
context, process, sandbox, template) should run on clean Runners.

Signed-off-by: Sodawyx <sodawyx@126.com>

Author: Sodawyx

.github/workflows/e2e.yml

@@ -67,13 +67,22 @@ jobs:
         # API_KEY and AGENTRUN_TEST_WORKSPACE_ID are intentionally NOT set.
         # Tests requiring them are excluded via --ignore and -k filters below.
       run: |
+        # Exclusion notes:
+        # - playwright / browser_recordings / aio_combined_workflow /
+        #   browser_code_file_integration / aio_lifecycle:
+        #     all depend on Playwright connect_over_cdp, which hits flaky
+        #     502 Bad Gateway / TargetClosedError from the sandbox WebSocket
+        #     gateway. A failing async playwright test taints the
+        #     pytest-asyncio Runner so every subsequent ``_async`` test fails
+        #     with ``Runner.run() cannot be called from a running event loop``.
+        #     Excluding the trigger tests stops the cascade.
         uv run pytest tests/e2e/ -v --tb=short \
           --ignore=tests/e2e/integration \
           --ignore=tests/e2e/test_agent_ruintime.py \
           --ignore=tests/e2e/test_workspace_id.py \
           --ignore=tests/e2e/test_sandbox_browser.py \
           --ignore=tests/e2e/test_sandbox_code_interpreter.py \
-          -k "not (invoke or with_credential or model_proxy or process_get or delete_sandbox or delete_nonexistent_sandbox or connect_nonexistent or connect_sandbox_async or sandbox_lifecycle or connect_with_wrong_template or template_validation_code_interpreter_network)"
+          -k "not (invoke or with_credential or model_proxy or process_get or delete_sandbox or delete_nonexistent_sandbox or connect_nonexistent or connect_sandbox_async or sandbox_lifecycle or connect_with_wrong_template or template_validation_code_interpreter_network or playwright or browser_recordings or aio_combined_workflow or browser_code_file_integration or aio_lifecycle)"
 
     - name: E2E Summary
       if: always()