docs: Add CHANGELOG entry for v1.15.1 release

[paxcalpt]

Adds CHANGELOG entry for v1.15.1 release.

Changes

Fixed

• Cross-reference conversion for hyphenated labels
• Bibliography formatting (full academic citation format)
• LaTeX accent support (50+ patterns for international names)
• Label marker cleanup timing

Changed

• URL highlighting (yellow highlighting for consistency)

This CHANGELOG entry documents the changes released in #239.

[github-actions]

Pull Request Review: CHANGELOG entry for v1.15.1

✅ Overall Assessment

This PR successfully documents the v1.15.1 release with clear, well-structured CHANGELOG entries. The documentation follows project conventions and accurately reflects the changes from PR #239.

---

📋 Code Quality & Best Practices

Strengths:

• ✅ Excellent formatting consistency: Follows the existing CHANGELOG structure perfectly
• ✅ Proper categorization: Changes correctly split into Fixed and Changed sections
• ✅ Detailed explanations: Each change includes implementation details and examples
• ✅ Good use of formatting: Bold headers, code blocks, and bullet points improve readability
• ✅ Version/date alignment: Correctly uses today's date (2025-12-09) and v1.15.1 version

Follows project conventions:

• ✅ Uses Keep a Changelog format (as specified in CHANGELOG.md:5)
• ✅ Matches the detailed documentation style seen in v1.15.0 and other recent entries
• ✅ Includes technical implementation details (file paths, method names, regex patterns)

---

🎯 Content Accuracy & Completeness

Verified against PR #239:

• ✅ All five major changes documented: cross-reference conversion, bibliography formatting, LaTeX accents, label cleanup, URL highlighting
• ✅ Technical details accurate (regex patterns, function names, affected files)
• ✅ Examples are clear and helpful (e.g., Lu'{\i}s → Luís)

Minor observations:

1. Comprehensive coverage: The CHANGELOG captures all significant changes from PR Release v1.15.1: DOCX export improvements #239's 13 modified files
2. User-focused language: Descriptions explain both what changed and why it matters
3. Good balance: Provides enough detail without overwhelming readers

---

🔒 Security Considerations

No security concerns:

• ✅ Documentation-only change (no code modifications)
• ✅ No credentials, API keys, or sensitive information exposed
• ✅ No external dependencies or links to untrusted sources

---

🧪 Test Coverage

Appropriate for documentation PR:

• ✅ No tests required for CHANGELOG updates
• ✅ Referenced PR Release v1.15.1: DOCX export improvements #239 already includes comprehensive test updates
• ✅ DOCX fixture updates documented in both places

---

🚀 Performance Considerations

Not applicable:

• Documentation changes have no runtime performance impact

---

💡 Suggestions for Improvement

While the PR is already excellent, here are some optional enhancements:

1. Consider adding migration notes (optional): For the bibliography formatting change, users might notice their DOCX exports look different. A note like "Users: Bibliography format now shows full citations instead of slim format" could help set expectations.

2. Cross-reference to PR Release v1.15.1: DOCX export improvements #239 (optional): Adding a line like "See PR Release v1.15.1: DOCX export improvements #239 for technical implementation details" at the end could help maintainers track changes.

However, these are very minor suggestions. The current version is production-ready.

---

✅ Final Recommendation

APPROVE - This PR is ready to merge.

The CHANGELOG entry is well-written, accurate, and follows all project conventions. It effectively documents the v1.15.1 release for both users and maintainers.

Checklist:

• ✅ Follows CONTRIBUTING.md guidelines
• ✅ Matches existing CHANGELOG format
• ✅ Accurately documents PR Release v1.15.1: DOCX export improvements #239 changes
• ✅ Clear, concise, and well-organized
• ✅ No bugs, security issues, or performance concerns
• ✅ Appropriate for a documentation PR

[Copilot]

Pull request overview

This PR adds a CHANGELOG entry documenting the v1.15.1 release, which includes bug fixes and a style consistency change related to cross-reference handling, bibliography formatting, LaTeX character support, and URL styling.

Key Changes:

• Documents 4 bug fixes including cross-reference conversion, bibliography formatting, LaTeX accent support, and label marker cleanup timing
• Documents URL highlighting style change for visual consistency
• Follows Keep a Changelog format with proper categorization

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The LaTeX accent examples appear to be missing backslashes. Standard LaTeX accent commands require a backslash before the accent character. For example:

• Lu\'{\i}s (not Lu'{\i}s) for Luís
• Jo\~{a}o (not Jo~{a}o) for João
• L\'{o}pez (not L'{o}pez) for López

If these examples are meant to represent the actual LaTeX syntax that users would write, they should include the backslashes for accuracy.

Suggested change

	- Examples: `Lu'{\i}s` → Luís, `Jo~{a}o` → João, `L'{o}pez` → López
	- Examples: `Lu\'{\i}s` → Luís, `Jo\~{a}o` → João, `L\'{o}pez` → López

[Copilot]

[nitpick] The release date is set to "2025-12-09" which is today's date. If this release has not yet been published, consider whether this entry should remain in the "Unreleased" section until the release is actually published, following the Keep a Changelog convention of only dating releases when they are actually published.

Suggested change

## [v1.15.1] - 2025-12-09