[codingkush]

What & why

Extracts the report CSS from report-template.html into a dedicated report/report.css resource.

HtmlReportGenerator loads the CSS from the classpath and inlines it into the generated HTML report, so the report remains a single self-contained file. Existing report markup and behavior are unchanged.

Part of #179

Type of change

• Bug fix
• New feature (opt-in, aligned with the framework philosophy)
• Documentation
• Internal refactor / test coverage

Checklist

• All existing tests pass (mvn clean verify)
• New behaviour is covered by unit tests
• No new external dependencies introduced without prior discussion
• Code follows existing conventions (no new frameworks, minimal abstraction)
• No breaking changes to @SeleniumBootApi public APIs (or a major version bump is justified below)
• Docs updated if user-facing behaviour changed (docs-site/) — not applicable; this is an internal refactor

Notes for reviewers

• This PR only extracts the CSS.

• JavaScript extraction, markup partials, and theme changes will be submitted separately.

• HtmlReportGenerator replaces the {{REPORT_CSS}} placeholder with the classpath CSS content.

• The generated report remains a single self-contained HTML file.

• No runtime behavior or public API changes are included.

• The template uses valid HTML newlines around the CSS placeholder:

  <style>
  {{REPORT_CSS}}
  </style>

Validation

• mvn clean verify ran all 790 tests successfully:

  • 0 failures
  • 0 errors
  • 0 skipped tests

• The build exited during the final Maven GPG signing phase because GPG signing is not configured in the local environment. This is unrelated to this PR.

• Focused report tests passed:

  mvn -q -Dtest=HtmlReportGeneratorTest,ReportTabBehaviourTest test