@devtools/client v0.0.4

Summary

• Add react-window-backed VirtualizedComponentTree with flattened rows, expand/collapse state, selection state, and scroll-to-node support.
• Replace the Components tab placeholder tree with a 600-node synthetic virtualized tree fixture.
• Include tree coverage in @devtools/client Jest thresholds and cover bounded rendering, off-screen scroll, and state survival.

Verification

• npm run format:check
• npm run lint
• npm run typecheck
• npm run test:unit
• npm run build
• UAT: local client dev server, opened Components, verified 600 logical visible nodes render as 18 DOM rows, selected ComponentLeaf0_5, collapsed ComponentGroup0, scrolled to the end, returned, re-expanded, and confirmed selection survived. Console capture showed only Vite debug messages and React's standard DevTools info prompt, no runtime exceptions.