Test 6 (delete annotation): the mouse-draw test can create multiple
annotations in CI. Changed the assertion to `countBefore - 1` instead
of a hard-coded 0, so the test is resilient to any pre-existing count.
Test 7 (hash versioning): `[data-testid^="annotation-"]` matched both
real annotation elements AND `annotation-outdated-notice` (which also
starts with "annotation-"), inflating the count to 2 instead of 0.
Added `:not([data-testid="annotation-outdated-notice"])` to exclude the
notice from the count assertion.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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