Promote develop to main

[ptr727]

Promote develop to main.

Single change: test coverage and Codecov configuration (#260), test and config only, no functional/library behavior changes.

• codecov.yml (informational, scoped to the library, generated code ignored)
• Roslyn parse validation for SaveCodeAsync, plus LanguageSchema/LogExtensions coverage
• redundant test .editorconfig overrides removed
• Microsoft.CodeAnalysis.CSharp test-only dependency

Hand-written coverage ~76.6% -> ~91.6% (310 tests). Follow-up tracked in #259.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.43%. Comparing base (be1c95a) to head (ebec6e9).
⚠️ Report is 60 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #261       +/-   ##
===========================================
- Coverage   99.76%   87.43%   -12.34%     
===========================================
  Files          15       11        -4     
  Lines      232994     1973   -231021     
  Branches      243      243               
===========================================
- Hits       232450     1725   -230725     
+ Misses        462      166      -296     
  Partials       82       82               

see 10 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Copilot]

Pull request overview

Promotes develop to main by bringing in the test-coverage and Codecov configuration work (no functional library behavior changes), improving confidence in codegen emitters and logging helpers.

Changes:

• Add Roslyn-based syntax validation tests for SaveCodeAsync output across the ISO/RFC/UN data types.
• Add unit tests for LanguageSchema.GetCodeGenString and for LogExtensions.LogAndPropagate / LogAndHandle.
• Introduce codecov.yml, remove redundant test .editorconfig suppressions, and add a test-only Microsoft.CodeAnalysis.CSharp dependency (centralized in Directory.Packages.props).

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
LanguageTagsTests/UnM49Tests.cs	Adds SaveCodeAsync code emission + Roslyn parse validation coverage for UN M.49.
LanguageTagsTests/Rfc5646Tests.cs	Adds SaveCodeAsync code emission + Roslyn parse validation coverage for RFC 5646.
LanguageTagsTests/Iso6393Tests.cs	Adds SaveCodeAsync code emission + Roslyn parse validation coverage for ISO 639-3.
LanguageTagsTests/Iso6392Tests.cs	Adds SaveCodeAsync code emission + Roslyn parse validation coverage for ISO 639-2.
LanguageTagsTests/LogExtensionsTests.cs	Adds tests validating logging level/exception capture and boolean return behavior of logging helpers.
LanguageTagsTests/LanguageSchemaTests.cs	Adds direct unit coverage for codegen string formatting helpers (strings, dates, enums, and quote escaping in lists).
LanguageTagsTests/LanguageTagsTests.csproj	Adds Roslyn (Microsoft.CodeAnalysis.CSharp) package reference for syntax validation tests.
LanguageTagsTests/.editorconfig	Removes redundant test analyzer overrides; keeps xUnit-discovery-related suppressions.
Directory.Packages.props	Centralizes the Roslyn package version used by the test project.
codecov.yml	Adds Codecov configuration scoped to the library, ignoring generated code and non-library projects.