Feat/layout refinement

[Nexisato]

Summary

Optimize the documentation site layout for wide-screen/high-resolution displays, and compact the homepage footer.

Changes

.vitepress/theme/custom.css — Wide-screen layout optimization

• --vp-layout-max-width: 1660px → 100%, remove fixed content width constraint
• Content centered: content-container with max-width: 56rem + margin: 0 auto + flex: 0 1 auto — text content is centered between sidebar and TOC, and shrinks responsively when space is limited
• TOC right-aligned: aside with flex: 0 0 240px + padding-right: 32px — pinned to the right edge using sticky positioning
• Responsive fallback: @media (max-width: 1280px) restores static stacking layout for narrow screens
• Removed outdated commented-out CSS rules

zh/index.md — Compact footer (3 lines → 2 lines)

• Company name + ICP备案 info merged into one line with · separators
• margin-top reduced from 60px → 48px

en/index.md — Compact footer (2 lines → 1 line)

• Company name + copyright merged into one line with · separator
• margin-top reduced from 120px → 48px

Layout effect (2560px wide screen)

|sidebar 320px| ~552px |content 896px| ~552px |aside 240px|

Content is centered between sidebar and TOC, which are aligned to opposite ends.

Layout effect (1440px)

|sidebar 320px|content ~880px|aside 240px|

Content auto-shrinks via flex: 0 1 auto — no overlap, no overflow.

[gemini-code-assist]

Code Review

This pull request primarily focuses on documentation updates to improve consistency in naming conventions, specifically standardizing references to 'GitHub', 'TensorBoard', 'MLflow', 'OmegaConf', 'Stable Baselines3', and 'W&B' across various English and Chinese documentation files. The review comments provided actionable suggestions to further refine the consistency of 'W&B' terminology in the integration documentation, which have been incorporated.