Add recho.button

[chengluyu]

close: #100

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
recho-notebook	Ready	Preview	Comment	Nov 26, 2025 1:24am

[Copilot]

Pull Request Overview

This PR adds a new interactive button control (recho.button) to the Recho Notebook system, allowing users to create clickable buttons that execute callback functions.

Key changes:

• Implements ButtonRegistry to manage button callbacks with duplicate detection
• Creates editor widgets that render buttons inline with code
• Adds comprehensive documentation with usage examples

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
runtime/index.js	Integrates ButtonRegistry into the runtime, initializing it per-instance and managing execution cycles
runtime/controls/button.js	Implements ButtonRegistry class for callback management and the button() function with two-argument and three-argument signatures
runtime/controls/index.js	Exports the button control function
editor/controls/button.js	Implements ButtonWidget and ButtonPlugin for rendering interactive buttons in the CodeMirror editor
editor/controls/index.js	Integrates button control into the editor controls array
app/docs/nav.config.js	Adds navigation entry for button API documentation
app/docs/api-reference.recho.js	Adds button to the API reference list
app/docs/api-button.recho.js	Provides detailed documentation and usage examples for recho.button

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[pearmini]

LGTM!