fix(a11y): wrap long directory headings

[seonghobae]

Purpose

Rebuild the unique accessibility behavior from stale PR #411 on current protected master. File links already wrap, but an unbroken directory name in the generated h1 can overflow a narrow viewport.

Test-first evidence

• Invalid first attempt: test-only head 18a344737c99b0434e43869ecda6f62cf3bd2c9c produced CI run 31465482084, but its test regex was malformed and raised PatternSyntaxException. That run is test-infrastructure evidence only and is not the product RED oracle.
• Valid RED: corrected test-only head 1248c8cf1fdff74831bffa9a4a8d4e4c71f3e75e ran CI 31473152488 / job 93720775196: 74 tests executed with exactly one intended failure at MainTest.kt:360, proving the generated stylesheet lacked the h1 { overflow-wrap: anywhere; } rule.
• Narrow fix: exact head 0fb29e60a50c11856aea1c74e6e319befef046da adds only that heading-wrap rule while retaining the focused regression test.

Exact-head verification

Protected-base snapshot and independently resolved live master are both a801bc3b4b4dbc08919dbf02c93477c0cbfd4309.

• CI 31474207096 / build job 93724052789: success, including Gradle tests and JaCoCo verification.
• SAST Semgrep 31474207106 / job 93724053281: success.
• Security Scan 31474207157: Scorecard 93724055938, OSV 93724055959, Trivy 93724056001, and dependency review 93724056033 all succeeded.
• Current-head reviews: none; review threads: none.

Claim boundary

This fixes wrapping for generated directory headings. It does not claim whole-product WCAG conformance or independently validate every browser zoom, font, localization, or assistive-technology combination.

Summary by CodeRabbit

• 개선 사항

  • 좁은 화면에서도 긴 디렉터리 제목이 적절히 줄바꿈되어 화면 밖으로 넘치지 않도록 개선했습니다.

• 테스트

  • 긴 제목의 줄바꿈 동작을 자동으로 검증하는 테스트를 추가했습니다.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 51c3b997-8d5f-48c6-8c29-c8cf1b5139af

📥 Commits

Reviewing files that changed from the base of the PR and between a801bc3 and 0fb29e6.

📒 Files selected for processing (2)

• src/main/kotlin/html4tree/main.kt
• src/test/kotlin/html4tree/MainTest.kt

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📝 Walkthrough

Walkthrough

생성된 HTML의 h1 요소에 overflow-wrap: anywhere 스타일을 추가했습니다. testProcessDir는 생성된 HTML에 해당 스타일이 포함되는지 검증합니다.

Changes

제목 줄바꿈

Layer / File(s)	Summary
h1 줄바꿈 스타일 및 검증 src/main/kotlin/html4tree/main.kt, src/test/kotlin/html4tree/MainTest.kt	생성된 h1 스타일에 overflow-wrap: anywhere를 추가했습니다. testProcessDir가 해당 CSS를 정규식으로 검증합니다.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• ContextualWisdomLab/html4tree#374: 동일한 h1 CSS 스타일과 관련 테스트를 변경합니다.
• ContextualWisdomLab/html4tree#383: 긴 디렉터리 제목의 h1 줄바꿈 스타일을 추가합니다.

Suggested reviewers: copilot

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	제목은 좁은 뷰포트에서 긴 디렉터리 제목을 줄바꿈하는 주요 변경 사항을 정확하고 간결하게 설명합니다.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/long-heading-wrap-current

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