feat: add Node.js CLI for CodeGPT with npm support and installation script

[Mai0313]

This pull request introduces support for distributing CodeGPT as an npm package, enabling easy installation via Node.js and npm. It adds a new workflow for publishing to npm, updates documentation in all supported languages, and implements the necessary packaging scripts and configuration for cross-platform binary installation. The most important changes are grouped below:

GitHub Actions & Release Automation:

• Added a new publish-npm job to .github/workflows/goreleaser.yml to automate npm publishing, including steps for downloading build artifacts, updating package.json, copying documentation, and verifying publication. The workflow outputs the version from the tagged release for use in npm publishing. [1] [2]

Node.js Package Implementation:

• Created cli/nodejs/package.json to define the npm package, including metadata, binary mapping, supported platforms/architectures, and a postinstall script to handle binary setup.
• Added cli/nodejs/install.js, a Node.js installer script that detects the user's platform and architecture, copies the appropriate binary, and sets executable permissions.
• Added .npmignore in cli/nodejs to exclude unnecessary files from the npm package.

Documentation Updates:

• Updated README.md, README.zh-cn.md, and README.zh-tw.md to include npm badges and installation instructions for the new npm package, clarifying that the correct binary is automatically installed for the user's platform. [1] [2] [3] [4] [5] [6]

[Copilot]

Pull Request Overview

This pull request adds Node.js/npm distribution support for CodeGPT, enabling users to install the CLI tool through npm alongside existing installation methods. The implementation includes automated npm publishing through GitHub Actions and cross-platform binary installation.

• Automated npm package publishing integrated into the existing GoReleaser workflow
• Node.js installer that detects platform/architecture and copies the appropriate binary
• Documentation updates across all supported languages (English, Chinese Traditional, Chinese Simplified)

Reviewed Changes

Copilot reviewed 7 out of 9 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
.github/workflows/goreleaser.yml	Adds npm publishing job with artifact handling and version extraction
cli/nodejs/package.json	Defines npm package metadata, supported platforms, and installation scripts
cli/nodejs/install.js	Platform detection and binary installation logic for cross-platform support
cli/nodejs/.npmignore	Excludes unnecessary files from npm package distribution
README.md, README.zh-cn.md, README.zh-tw.md	Adds npm badges and installation instructions

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

The binary path points to 'bin/codegpt' but the install script copies the binary to 'bin/codegpt-bin'. This mismatch will cause the CLI command to fail when users try to run 'codegpt' after installation.

Suggested change

	"codegpt": "bin/codegpt"
	"codegpt": "bin/codegpt-bin"

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 6.79%. Comparing base (0125d86) to head (91a591f).
⚠️ Report is 212 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (0125d86) and HEAD (91a591f). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (0125d86)	HEAD (91a591f)
	1	0

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #251       +/-   ##
==========================================
- Coverage   21.96%   6.79%   -15.18%     
==========================================
  Files           8      33       +25     
  Lines         346    1870     +1524     
==========================================
+ Hits           76     127       +51     
- Misses        264    1734     +1470     
- Partials        6       9        +3     

Flag	Coverage Δ
go-1.24	6.79% <ø> (?)
go-1.25	6.79% <ø> (?)
macos-latest	6.79% <ø> (?)
ubuntu-latest	6.79% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.