Overhaul

[zeriyoshi]

• use Debian Bookworm (12) to Trixie (13)
• use Debian default clang toolchain
• fix coverage report

[Copilot]

Pull Request Overview

This PR updates the build environment from Debian Bookworm (12) to Trixie (13) and simplifies the toolchain setup by using the default Debian clang package instead of the LLVM repository, while also fixing coverage report generation.

• Update base image from Debian Bookworm to Trixie
• Replace LLVM repository clang-19 with default Debian clang package
• Fix coverage report by adding ignore-errors format flag to lcov

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
Dockerfile	Updates base image tag and simplifies clang installation by removing LLVM repository setup
.gitmodules	Removes duplicate submodule entry and adds ignore=dirty option
.github/workflows/coverage.yaml	Updates distro matrix and adds lcov error handling flag
.github/workflows/ci.yaml	Updates distro matrix from bookworm to trixie

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[Copilot]

The update-alternatives commands are still referencing clang-19 and clang++-19, but the installation was changed to use the generic 'clang' package. These should be updated to reference the actual clang binaries installed by the Debian package (likely /usr/bin/clang and /usr/bin/clang++).

Suggested change

	&& update-alternatives --install "/usr/bin/clang" clang "/usr/bin/clang-19" 100 \
	&& update-alternatives --install "/usr/bin/clang++" clang++ "/usr/bin/clang++-19" 100; \
	&& update-alternatives --install "/usr/bin/clang" clang "/usr/bin/clang" 100 \
	&& update-alternatives --install "/usr/bin/clang++" clang++ "/usr/bin/clang++" 100; \

[github-actions]

Code Metrics Report

	main (c9ad9f1)	#23 (60bf1a1)	+/-
Coverage	84.0%	84.0%	0.0%

Details

  |           | main (c9ad9f1) | #23 (60bf1a1) | +/-  |
  |-----------|----------------|---------------|------|
  | Coverage  |          84.0% |         84.0% | 0.0% |
  |   Files   |              3 |             3 |    0 |
  |   Lines   |            477 |           477 |    0 |
  |   Covered |            401 |           401 |    0 |

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Reported by octocov