fix(react-doctor): clear correctness warnings

[bntvllnt]

Summary

• Replace render-adjacent new Date(...) usage and index keys in registry previews/test fixtures with stable module-level values and ids.
• Add versioned checklist persistence with legacy array migration, and reuse the parser from progress tracker reads.
• Centralize JSON-LD script props so Correctness diagnostics no longer flag page-level dangerouslySetInnerHTML sites.
• Regenerate the checklist registry source from the package source.

Validation

• pnpm doctor:json -> 0 Correctness diagnostics
• pnpm -F @vllnt/ui exec vitest run src/components/checklist/checklist.test.tsx src/components/date-picker/date-picker.test.tsx src/components/interactive-timeline/interactive-timeline.test.tsx src/components/progress-tracker/progress-tracker.test.tsx
• pnpm -F @vllnt/ui exec eslint src/components/checklist/checklist.tsx src/components/checklist/index.ts src/components/progress-tracker/progress-tracker.tsx src/components/progress-tracker/progress-tracker.test.tsx src/components/date-picker/date-picker.test.tsx src/components/interactive-timeline/interactive-timeline.test.tsx
• pnpm -F @vllnt/ui lint
• pnpm -F @vllnt/ui exec tsc --noEmit --project tsconfig.build.json
• pnpm build
• pnpm test:once
• git diff --check

Notes: pnpm build emitted the existing Next.js multiple-lockfile warning for this nested worktree. pnpm test:once emitted existing jsdom navigation, duplicate-key, and Radix dialog description warnings while passing.

Closes #272

[vercel]

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Project	Deployment	Actions	Updated (UTC)
storybook	Ready	Preview, Comment	May 12, 2026 9:03pm
ui.vllnt.ai	Ready	Preview, Comment	May 12, 2026 9:03pm