Mark the following tests with `@pytest.mark.run_alone` so they run in
isolation (numprocesses=1) rather than in parallel, reducing flakiness
observed across the last 10 master commits:

- test_open_and_close_page (failed on Windows)
- test_get_cpu_sample (failed on Windows)
- test_snapshot_pruning_removes_outdated_records (failed on Ubuntu)
- test_execution in test_recurring_task (upgraded from run_alone_on_mac
  to full run_alone, failed on macOS)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

self-assigned this

Feb 11, 2026

vdusek added t-tooling

Issues with this label are in the ownership of the tooling team.

adhoc

Ad-hoc unplanned task added during the sprint.

labels

Feb 11, 2026

The test fails with `assert 3 == 2` even when running in isolation,
indicating a real bug in snapshot pruning boundary logic rather than
a parallelism issue.

Tracked in #1734

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>