fusion

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gsxdsm 97a49ac196 FN-6382: unquarantine stabilized flaky tests

Restore quarantined tests by fixing their flaky harness seams instead of extending the deletion ratchet.

- Mark active Vitest worker roots and skip live worker roots during prune cleanup.
- Make bubblewrap backend coverage deterministic with an injectable runner and restore it to the engine gate.
- Remove rescued core and bubblewrap tests from the quarantine ledger and Vitest excludes.

Files changed:
 .../core/src/__test-utils__/vitest-teardown.ts     | 10 +++++-
 packages/core/vitest.config.ts                     |  8 +----
 .../__tests__/sandbox/bubblewrap-backend.test.ts   | 29 +++++++++------
 packages/engine/src/sandbox/bubblewrap-backend.ts  |  9 +++--
 packages/engine/vitest.config.ts                   |  1 -
 scripts/__tests__/test-changed.test.mjs            | 23 ++++++++++++
 scripts/lib/test-quarantine.json                   | 34 ++----------------
 scripts/test-changed.mjs                           | 41 ++++++++++++++++++++++
 8 files changed, 102 insertions(+), 53 deletions(-)

Fusion-Task-Id: FN-6382

Fusion-Task-Lineage: 018dc7ac-1ef1-495e-a5fd-96ea44fcd43b

2026-06-13 11:39:37 -07:00