feat: add GitHub Issues Integration to community catalog

[Fatima367]

Summary

Adds the GitHub Issues Integration extension to the community catalog, enabling users to
generate spec artifacts directly from GitHub Issues.

Resolves #2175

Extension Details

• Name: GitHub Issues Integration
• ID: github-issues
• Version: 1.0.0
• Category: integration
• Effect: Read+Write
• Author: @Fatima367
• Repository: https://github.com/Fatima367/spec-kit-github-issues
• License: MIT

Features

• /speckit.github-issues.import - Import GitHub Issue and generate structured spec.md
• /speckit.github-issues.sync - Keep specs updated when source issues change
• /speckit.github-issues.link - Add bidirectional traceability between specs and issues

Problem Solved

Developers already document requirements in GitHub Issues but then rewrite everything from
scratch in spec.md when starting SDD. This extension eliminates that duplicate work by:

• Importing issues directly into structured specs
• Preserving valuable discussions and context
• Maintaining sync between issues and specs
• Providing bidirectional traceability

Installation

specify extension add github-issues --from
https://github.com/Fatima367/spec-kit-github-issues/archive/refs/tags/v1.0.0.zip

##  Prerequisites

- GitHub CLI (gh) installed and authenticated
- Read access to target repositories
- Write access for bidirectional linking (optional)

##  Testing

✅ Extension tested locally with issue #2175
✅ Successfully imported issue and generated spec.md
✅ Extension manifest validates correctly
✅ GitHub release v1.0.0 created

## Changes Made

extensions/catalog.community.json

- Added github-issues entry in alphabetical order (between fleet and iterate)
- Updated updated_at timestamp to 2026-04-12T12:06:00Z
- Included all required fields: name, id, description, author, version, download_url,
repository, homepage, documentation, changelog, license, requires, provides, tags

##  README.md

- Added GitHub Issues Integration to Community Extensions table
- Positioned alphabetically between Fleet Orchestrator and Iterate
- Included description, category, effect, and repository link

##  Catalog Entry

"github-issues": {
  "name": "GitHub Issues Integration",
  "id": "github-issues",
  "description": "Generate spec artifacts from GitHub Issues - import issues, sync updates, and   maintain bidirectional traceability",
  "author": "Fatima367",
  "version": "1.0.0",
  "download_url":
"https://github.com/Fatima367/spec-kit-github-issues/archive/refs/tags/v1.0.0.zip",
  "repository": "https://github.com/Fatima367/spec-kit-github-issues",
  "homepage": "https://github.com/Fatima367/spec-kit-github-issues",
  "documentation": "https://github.com/Fatima367/spec-kit-github-issues/blob/main/README.md",  
  "changelog": "https://github.com/Fatima367/spec-kit-github-issues/blob/main/CHANGELOG.md",   
  "license": "MIT",
  "requires": {
    "speckit_version": ">=0.1.0",
    "tools": [
      {
        "name": "gh",
        "version": ">=2.0.0",
        "required": true
      }
    ]
  },
  "provides": {
    "commands": 3,
    "hooks": 0
  },
  "tags": [
    "integration",
    "github",
    "issues",
    "import",
    "sync",
    "traceability"
  ],
  "verified": false,
  "downloads": 0,
  "stars": 0,
  "created_at": "2026-04-12T00:00:00Z",
  "updated_at": "2026-04-12T00:00:00Z"
}

##  Checklist

- Extension entry added to extensions/catalog.community.json in alphabetical order
- Extension added to Community Extensions table in README.md
- Catalog updated_at timestamp updated
- All required fields included in catalog entry
- GitHub repository exists with extension code
- GitHub release v1.0.0 created
- Extension tested and working
- Documentation complete (README, CHANGELOG, LICENSE)
- Extension follows naming conventions (speckit.{ext-id}.{command})

###  Related PRs

- First PR: ##2187 - Added extension code to main repository (bundled approach)
- This PR: Adds extension to community catalog for standalone installation

### Notes

The extension is now available as a standalone package that users can install from the
community catalog. The extension repository includes:
- Complete documentation
- All command files
- Configuration templates
- MIT License
- Changelog
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