[PaulHax]

Summary

Fix the cine rasterization tooltip flake seen in the macOS E2E run, where a global active-tooltip selector returned “Segment 1” instead of the disabled Rasterize reason.

Resolve the tooltip through its activator’s aria-describedby using the existing tooltipOf helper. Share the disabled-state, hover, visibility, and exact-text assertions with the restored-segment case to satisfy the duplication check. No sleeps, retries, or weakened assertions.

Validation

On the final patch, using Node 22.21.1 and Chrome 157 on Windows:

• Five full runs of polygon-rasterize-segment.e2e.ts: 25/25 tests passed
• npm run lint, including type checks: passed, with 49 existing warnings
• Prettier check and Vite build: passed
• Repository quality checks: passed with a local Windows jscpd launcher adapter preserving check logic and arguments
• git diff --check and direct commitlint validation: passed

macOS and Linux CI remain to be verified.

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