Regeneration-Prompt: |
Fix the unrelated qa-lab failures that started surfacing once bundled extension linting covered the QA channel types. Keep the change minimal and additive. Preserve the existing plugin-sdk import surface for qa-lab, but make sure the generated qa-channel plugin-sdk declarations can be resolved from bundled extension package-boundary tsconfig paths. Also replace the over-broad QaBusEventSeed union in qa-lab bus state with an explicit discriminated union so oxlint no longer treats the event variants as duplicate constituents. Verify with the qa-lab package typecheck, a targeted type-aware oxlint run for the affected files, full pnpm check, and the focused qa-lab bus-state test.
