Add codemod to migrate githubnext/gh-aw install script references to github/gh-aw

[Copilot]

The repository moved from githubnext/gh-aw to github/gh-aw. This adds a codemod to automatically migrate install script references in workflow files.

Changes

• New codemod (install-script-url-migration)

  • Replaces https://raw.githubusercontent.com/githubnext/gh-aw/ → https://raw.githubusercontent.com/github/gh-aw/
  • Replaces githubnext/gh-aw → github/gh-aw
  • Handles all URL formats (main, refs/heads/main, tags, branches)

• Files

  • pkg/cli/codemod_install_script_url.go - implementation
  • pkg/cli/codemod_install_script_url_test.go - test suite (10 cases)
  • pkg/cli/fix_codemods.go - registry update
  • pkg/cli/fix_codemods_test.go - updated codemod count (15→16)

Example

Before:

steps:
  - run: curl -fsSL https://raw.githubusercontent.com/githubnext/gh-aw/main/install-gh-aw.sh | bash
  - run: gh extension install githubnext/gh-aw

After:

steps:
  - run: curl -fsSL https://raw.githubusercontent.com/github/gh-aw/main/install-gh-aw.sh | bash
  - run: gh extension install github/gh-aw

Usage: gh aw fix --write

Original prompt

Add a codemod that migrates the older githubnext/gh-aw hosted install script invocation to the new location at GitHub/gh-aw in the copilot setup steps yml files.

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[Copilot]

Pull request overview

This PR adds a codemod to migrate install script and extension installation references from the old githubnext/gh-aw repository location to the new github/gh-aw location. The codemod automatically updates both full raw.githubusercontent.com URLs and short-form GitHub CLI extension references.

Changes:

• Added new install-script-url-migration codemod that performs string replacements on workflow files
• Comprehensive test suite with 10 test cases covering various URL formats, edge cases, and markdown preservation
• Updated codemod registry and test count to include the new codemod

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

File	Description
pkg/cli/codemod_install_script_url.go	Implements the new codemod with pattern-based string replacement logic for URL and short-form repository references
pkg/cli/codemod_install_script_url_test.go	Comprehensive test suite with 10 test cases covering different URL formats, multiple occurrences, and edge cases
pkg/cli/fix_codemods.go	Registers the new codemod in the codemod registry
pkg/cli/fix_codemods_test.go	Updates expected codemod count from 15 to 16 and adds new codemod ID to expected order list

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