Add Qwen 3.7 Plus benchmark profile

[qinxuye]

Summary

• add a bundled qwen/qwen3.7-plus model profile with canonical OpenRouter ID, aliases, context/output limits, pricing, and source links
• record GPQA Diamond 90.0 from Artificial Analysis
• preserve LiveCodeBench as missing because neither Artificial Analysis nor Vals currently publishes a result for this model
• add registry regression coverage for profile count, alias resolution, provenance, and benchmark availability

Why

The router uses gpqa_diamond and livecodebench as its capability inputs. Qwen 3.7 Plus is now available through OpenRouter, so adding its sourced profile enables deployment use without substituting unrelated coding benchmarks for the still-missing LiveCodeBench result.

This change adds the model to the registry only; it does not add it to an auto router candidate set.

Validation

• XROUTER_LLM_ENTERPRISE_DISABLE_AUTOPATCH=1 PYTHONPATH=src python -m pytest -q — 81 passed, 21 skipped
• PYTHONPATH=src python -m compileall -q src tests
• git diff --check
• repository secret scan

[gemini-code-assist]

Code Review

This pull request adds a new YAML configuration file for the qwen/qwen3.7-plus model, specifying its metadata, costs, and benchmark scores. It also updates the corresponding test suite in tests/test_yaml_profiles.py to verify that the new model profile is loaded correctly with the expected attributes. There are no review comments, so no additional feedback is provided.