[CI] PR TCP benchmark compile job can hang until platform timeout

[Coldwings]

Bug Description

The PR tcp-benchmark-compile CI job has no repository-level timeout around its configure/build path. If TCP benchmark configure or target build hangs, the job can occupy CI until the GitHub Actions platform default timeout instead of failing within a repo-controlled bound.

Environment

• Elio Version: main at d7b1d521f57d2931a59f597a2d6fb39b83025f69
• Compiler: GitHub Actions CI
• OS: Ubuntu 24.04 GitHub Actions runner
• Kernel Version: GitHub-hosted runner kernel
• Build Type: Release TCP benchmark compile job
• CMake Version: GitHub Actions runner CMake

Build and Dependency Configuration

• Full CMake configure command: .github/workflows/ci.yml Configure TCP benchmark build
• Changed ELIO_* options: ELIO_BUILD_EXAMPLES=ON, ELIO_BUILD_TCP_BENCHMARKS=ON, TLS/HTTP/HTTP2 disabled
• Consumption mode: source checkout in GitHub Actions PR CI
• Relevant logs: static workflow review

Steps to Reproduce

1. Open a PR that changes TCP benchmark-affecting paths.
2. Let tcp-benchmark-compile run.
3. If configure or build stalls, observe that the job has no explicit timeout-minutes or command-level timeout bound.

Minimal Reproducible Example

Not a code API issue; this is visible in .github/workflows/ci.yml.

Expected Behavior

The TCP benchmark compile job should have an explicit repository-controlled timeout appropriate for a compile-only check.

Actual Behavior

tcp-benchmark-compile runs CMake configure and build without an explicit job or command timeout.

Error Messages

Not applicable.

ASAN/TSAN Output

Not applicable.

Additional Context

Evidence:

• .github/workflows/ci.yml defines tcp-benchmark-compile at the job level.
• Its configure/build steps run CMake directly.
• The job lacks timeout-minutes, and those steps are not wrapped with shell timeout.
• Other benchmark runtime steps in CI do use explicit command-level timeout wrappers.

Related Issues

• ci: compile TCP benchmark targets on PRs #595

Possible Solution

Add a concrete timeout-minutes to tcp-benchmark-compile, or wrap the configure/build commands with fixed shell timeouts.

Checklist

• I have searched existing issues to avoid duplicates
• I have provided all requested information
• I have included a minimal reproducible example (if possible)
• I have tested with the latest version of Elio
• I have included sanitizer output (for memory/threading issues)