Assistant UI

AI-native interface blocks for building assistant experiences — Copilot panels, agent activity feeds, diff reviews, and prompt composers.

Phase 1 targets React (VSCode webview-ready). Vue, Angular, React Native, and Flutter are planned after the React surface stabilizes.

Installation

npm

npx @galaxy-stack/nebula-cli@latest add chat-panel
npx @galaxy-stack/nebula-cli@latest add agent-activity
npx @galaxy-stack/nebula-cli@latest add diff-review
npx @galaxy-stack/nebula-cli@latest add prompt-box

Why a separate category?

Assistant UIs differ from classic app blocks:

• Streaming-first — partial content, blinking cursors, and live status are first-class states.
• Tool-call aware — assistant messages carry tool invocations with running/completed/error states.
• Human-in-the-loop — diff review blocks are built around accept/reject flows, not passive display.
• Editor-hosted — designed to run inside VSCode webviews, sidebars, and panels.

Components

Component	Purpose
Chat Panel	Copilot-style side panel with tool calls
Agent Activity	Task checklist + tool log progress
Diff Review	Accept/reject file changes with unified diffs
Prompt Box	Composer with attachments and slash commands