fix(react-doctor): clear architecture structure warnings

[bntvllnt]

Closes #269

Summary

• add a Knip workspace config so generated and framework-owned files are excluded from file-structure diagnostics
• remove unused public registry exports and keep helper types private where they are only used internally
• replace the BlogCard duplicate alias with a wrapper and regenerate the registry copy from the source component

Validation

• pnpm -F @vllnt/ui lint
• pnpm -F @vllnt/ui exec tsc --noEmit --project tsconfig.build.json
• pnpm -F @vllnt/ui-registry exec tsc --noEmit --project tsconfig.json
• pnpm build
• pnpm test:once
• git diff --check
• npx --yes react-doctor . --diff origin/main --annotations --fail-on error --offline
• npx --yes react-doctor . --offline --json: targeted files/exports/types/duplicates warnings = 0

Notes

• Next.js build still emits the known multiple-lockfile root warning in worktrees.
• Vitest still emits the known jsdom navigation, InteractiveTimeline duplicate-key, and ShareDialog description warnings.

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Project	Deployment	Actions	Updated (UTC)
storybook	Ready	Preview, Comment	May 12, 2026 10:48pm
ui.vllnt.ai	Ready	Preview, Comment	May 12, 2026 10:48pm