feat: add junit xml and html test reports

[Sam Gammon (sgammon)]

Summary

Coming soon; supersedes #1652.

[codecov]

Codecov Report

❌ Patch coverage is 73.93617% with 147 lines in your changes missing coverage. Please review.
✅ Project coverage is 40.59%. Comparing base (607eec2) to head (2924d3c).
⚠️ Report is 13 commits behind head on main.

Files with missing lines	Patch %	Lines
...lide/tooling/reporting/html/HtmlTemplateBuilder.kt	77.52%	40 Missing and 9 partials ⚠️
...lin/elide/tooling/reporting/html/HtmlTestModels.kt	70.77%	32 Missing and 13 partials ⚠️
...in/elide/tooling/reporting/xml/JUnitXmlReporter.kt	63.85%	21 Missing and 9 partials ⚠️
...otlin/elide/tooling/reporting/xml/JUnitXmlModel.kt	86.56%	9 Missing ⚠️
...elide/tooling/testing/TestPostProcessingOptions.kt	0.00%	5 Missing ⚠️
...lin/elide/tooling/reporting/TestReportProcessor.kt	85.71%	2 Missing and 1 partial ⚠️
...ain/kotlin/elide/tooling/runner/ElideTestRunner.kt	0.00%	3 Missing ⚠️
...n/elide/tooling/reporting/html/HtmlTestReporter.kt	75.00%	2 Missing ⚠️
...main/kotlin/elide/tooling/testing/TestRunResult.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           main    #1655       +/-   ##
=========================================
+ Coverage      0   40.59%   +40.59%     
=========================================
  Files         0      797      +797     
  Lines         0    37795    +37795     
  Branches      0     5387     +5387     
=========================================
+ Hits          0    15344    +15344     
- Misses        0    20625    +20625     
- Partials      0     1826     +1826     

Flag	Coverage Δ
jvm	40.59% <73.93%> (?)
lib	40.59% <73.93%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
.../elide/tooling/coverage/CoverageReportProcessor.kt	0.00% <ø> (ø)
.../kotlin/elide/tooling/reporting/html/HtmlAssets.kt	100.00% <100.00%> (ø)
...main/kotlin/elide/tooling/testing/TestRunResult.kt	0.00% <0.00%> (ø)
...n/elide/tooling/reporting/html/HtmlTestReporter.kt	75.00% <75.00%> (ø)
...lin/elide/tooling/reporting/TestReportProcessor.kt	89.28% <85.71%> (ø)
...ain/kotlin/elide/tooling/runner/ElideTestRunner.kt	0.00% <0.00%> (ø)
...elide/tooling/testing/TestPostProcessingOptions.kt	0.00% <0.00%> (ø)
...otlin/elide/tooling/reporting/xml/JUnitXmlModel.kt	86.56% <86.56%> (ø)
...in/elide/tooling/reporting/xml/JUnitXmlReporter.kt	63.85% <63.85%> (ø)
...lin/elide/tooling/reporting/html/HtmlTestModels.kt	70.77% <70.77%> (ø)
... and 1 more

... and 786 files with indirect coverage changes

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[Copilot]

Pull Request Overview

This PR adds test reporting capabilities to the Elide tooling framework by implementing both JUnit XML and HTML test report generation. The implementation supports converting Elide test results into standard formats that can be consumed by CI/CD systems, IDEs, and test reporting tools.

Key changes:

• Extended test data structures to include individual test results alongside aggregate statistics
• Implemented JUnit XML reporter with proper data model and formatting
• Created interactive HTML reporter with search, filtering, and collapsible sections

Reviewed Changes

Copilot reviewed 14 out of 15 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
TestRunResult.kt	Added testResults property to include individual test case results
TestPostProcessor.kt	Updated interface documentation and method signature formatting
TestPostProcessingOptions.kt	Added report format, output path, and suite name configuration options
TestReportProcessorTest.kt	Comprehensive test suite for both XML and HTML report generation
ElideTestRunner.kt	Modified to collect individual test results for reporting
JUnitXmlReporter.kt	Core XML report generation logic with JUnit format compliance
JUnitXmlModel.kt	Data models for JUnit XML structure with Jackson annotations
HtmlTestReporter.kt	HTML report generator using kotlinx-html DSL
HtmlTestModels.kt	Data models and conversion logic for HTML reports
HtmlTemplateBuilder.kt	HTML template generation with embedded CSS and JavaScript
HtmlAssets.kt	Embedded CSS and JavaScript assets for interactive features
TestReportProcessor.kt	Main processor implementation with format switching
build.gradle.kts	Added Jackson XML dependencies
elide.versions.toml	Added jackson-dataformat-xml dependency version

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