feat(benchmark): add Qwen3.8-Max and show version inline

[lizhengfeng101]

Summary

• Add Qwen3.8-Max (v1.8.7) benchmark results — F1 23.00%, precision 33.90% (co-silver with Claude-4.6-Opus), recall 17.40%
• Show tool version as inline sub-text under the source name in each row, replacing the static footer note
• Remove the footer note — version info is now per-row, making it easier to distinguish entries evaluated on different OCR versions
• Update benchmark screenshots for all 4 languages (en/zh/ja/ru)

Test plan

• Verify benchmark table renders correctly with the new Qwen3.8-Max row
• Verify version sub-text appears under each source name, aligned with the text (not the icon)
• Verify precision silver medal trophy displays on both Claude-4.6-Opus and Qwen3.8-Max
• Verify sorting still works correctly across F1/Precision/Recall columns
• Verify footer note is removed
• Check mobile scrolling still works

[github-actions]

✅ OpenCodeReview: Review complete: 0 finding(s) across 1 selected item(s).

[MuoDoo]

LGTM