ci: use clang for coverage

[mizvekov]

Replace GCC debug-info coverage report with clang AST based reports.

These are more accurate and don't suffer from disruptions from optimizations.

This also makes it so coverage only applies to unit tests, excluding self-test from coverage because that's incidental coverage.

[github-actions]

🚧 Danger.js checks for MrDocs are experimental; expect some rough edges while we tune the rules.

⚠️ Warnings

Warning

PR description looks empty. Please add a short rationale and testing notes.

🧾 Changes by Scope

Scope	Lines Δ	Lines +	Lines -	Files Δ	Files +	Files ~	Files ↔	Files -
🛠️ Source	361	101	260	2	-	2	-	-
⚙️ CI	32	12	20	1	-	1	-	-
Total	393	113	280	3	-	3	-	-

Legend: Files + (added), Files ~ (modified), Files ↔ (renamed), Files - (removed)

🔝 Top Files

• src/lib/AST/ASTVisitor.cpp (Source): 182 lines Δ (+101 / -81)
• src/lib/AST/ClangHelpers.hpp (Source): 179 lines Δ (+0 / -179)
• .github/workflows/ci.yml (CI): 32 lines Δ (+12 / -20)

Generated by 🚫 dangerJS against 161ba50

[codecov]

Codecov Report

❌ Patch coverage is 81.01266% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.38%. Comparing base (58bf524) to head (161ba50).

Files with missing lines	Patch %	Lines
src/lib/AST/ASTVisitor.cpp	81.01%	8 Missing and 7 partials ⚠️

❌ Your patch check has failed because the patch coverage (81.01%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #1144       +/-   ##
============================================
- Coverage    86.49%   76.38%   -10.12%     
============================================
  Files          326      311       -15     
  Lines        23840    29672     +5832     
  Branches         0     5863     +5863     
============================================
+ Hits         20620    22664     +2044     
- Misses        3220     4735     +1515     
- Partials         0     2273     +2273     

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[cppalliance-bot]

An automated preview of the documentation is available at https://1144.mrdocs.prtest2.cppalliance.org/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-01-30 19:53:32 UTC