Bound TCP benchmark compile CI job

[Coldwings]

Description

Adds a repository-controlled timeout to the PR-only TCP benchmark compile job so configure/build stalls fail promptly instead of waiting for the GitHub Actions platform default timeout.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Performance improvement (optimization that improves speed/memory usage)
• Documentation (changes to documentation, comments, or examples)
• Refactoring (code changes that neither fix bugs nor add features)
• Tests (adding or modifying tests)
• Build/CI (changes to build system, CI configuration, or dependencies)

Related Issues

Closes #612
Related to #595

Changes Made

Core Changes

• Added timeout-minutes: 15 to the tcp-benchmark-compile job in .github/workflows/ci.yml.
• Updated CHANGELOG.md for the CI timeout fix.

API Changes (if applicable)

None.

Migration Guide (if breaking change)

Not applicable.

Testing

Unit Tests

• Added new tests for the changes
• Updated existing tests if needed
• All tests pass locally

Integration Tests

• Tested with existing examples
• Tested in real-world scenarios (if applicable)

Sanitizer Testing

• Tested with ASAN (AddressSanitizer)
• Tested with TSAN (ThreadSanitizer)
• No new warnings or errors

Test Results

git diff --check
python3 -c "import yaml; yaml.safe_load(open('.github/workflows/ci.yml')); print('ci yaml ok')"
# ci yaml ok

Checklist

Code Quality

• My code follows the project's code style
• I have added/updated comments for complex logic
• I have removed any debug code, TODOs, or commented-out code
• My changes generate no new warnings

Documentation

• I have updated documentation (wiki, README, code comments)
• I have added examples for new features (if applicable)
• I have updated API documentation (if applicable)

Testing

• I have added tests that prove my fix is effective or my feature works
• New and existing unit tests pass locally with my changes
• I have tested with ASAN and TSAN

Compatibility

• My changes are backward compatible (or I've documented breaking changes)
• I have considered the impact on existing users
• I have updated CHANGELOG.md (if applicable)

Performance (if applicable)

• I have considered the performance impact
• I have added benchmarks for performance-critical changes

Screenshots / Diagrams

Not applicable.

Additional Notes

This is a CI-only change; no source build was required locally.

Reviewer Guidance

Areas requiring special attention:

• Whether 15 minutes is an appropriate upper bound for this compile-only PR job.
• Whether job-level timeout is preferable to command-level timeout wrappers for this check.

Questions for reviewers:

• None.

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