docs(next): ask ai using llamacloud (#1400)

.changeset/short-bees-cough.md

apps/next/package.json

apps/next/source.config.ts

apps/next/src/actions/index.tsx

apps/next/src/app/docs/layout.tsx

apps/next/src/app/layout.config.tsx

apps/next/src/app/layout.tsx

apps/next/src/components/ai-chat.tsx

apps/next/src/components/mdx.tsx

apps/next/src/components/message.tsx

apps/next/src/components/ui/alert.tsx

apps/next/src/components/ui/button.tsx

apps/next/src/components/ui/dialog.tsx

apps/next/src/components/ui/icons.tsx

apps/next/src/components/ui/textarea.tsx

apps/next/src/components/ui/tooltip.tsx

apps/next/src/deps/cloud.ts

packages/core/package.json

packages/core/src/postprocessor/index.ts

packages/core/src/postprocessor/type.ts