feat: add portable MATLAB runner skill

[ConanXu-math]

Summary

• add skills/matlab-runner as a lightweight, coding-agent-neutral MATLAB MCP adapter
• trigger only for explicit or genuinely MATLAB-dependent tasks, with on-demand environment checks
• discover the actual exposed MCP tool name and argument schema instead of hard-coding a client prefix
• preserve MATLAB implementation, real execution, unit-testing, numerical-validation, failure classification, and completion reporting rules
• record contributor attribution, source checksum, MIT publication authorization, normalization, dependency boundaries, and security guidance
• connect the package to the repository router, registry, bilingual READMEs, CI, and validation suite

Validation

• python3 -m unittest discover -s tests -v — 17 tests passed, 1 skipped because the private intake archive is absent
• python3 -m unittest discover -s skills/math-glossary/tests -v — 19 tests completed; 7 optional Flask/openpyxl cases skipped in the local environment
• python3 -m unittest discover -s skills/matlab-runner/tests -v — 5 tests passed
• git diff --check
• local-path and public-archive scans passed

The MATLAB adapter tests are static package and routing checks. They do not claim that MATLAB, a license, a toolbox, or a numerical scenario was executed in CI.

Attribution

The integration commit includes:

Co-authored-by: njustar2002 <njustar2002@vip.163.com>