Fix global GrumPHP hook fallback rendering

[coisa]

Related Issue

Closes #305

Motivation / Context

• keep globally synced Git hooks from passing an absolute packaged grumphp.yml path into the consumer's local vendor/bin/grumphp.phar
• make the managed fallback path safe for both local dependency installs and global DevTools installs

Changes

• add a DevToolsPathResolver helper that renders packaged paths relative to the consumer project root
• render the managed GrumPHP hook placeholder through that relative-path helper during git-hooks sync
• extend hook/path resolver regression coverage and update docs plus CHANGELOG.md

Verification

• composer dev-tools
• Focused command(s):
  • composer dev-tools tests -- --filter='(DevToolsPathResolverTest|HookContentRendererTest|GitHooksCommandTest|PackagedHooksTest)'
  • composer dev-tools code-style
  • composer dev-tools phpdoc
• Manual verification:

Documentation / Generated Output

• README updated
• docs/ updated
• Generated or synchronized output reviewed

Changelog

• Added a notable CHANGELOG.md entry

Reviewer Notes

• .github/wiki was already dirty in the local checkout and was intentionally left out of this branch

[github-actions]

🚀 Preview is available for this pull request.

• Docs: https://php-fast-forward.github.io/dev-tools/previews/pr-306/
• Coverage: https://php-fast-forward.github.io/dev-tools/previews/pr-306/coverage/
• Metrics: https://php-fast-forward.github.io/dev-tools/previews/pr-306/metrics/

[chatgpt-codex-connector]

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[coisa]

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