docs(blog): add English Log Is the Runtime

[likun666661]

Summary

• add a natural English edition of the Log Is the Runtime design blog
• preserve the Chinese article as the source-language counterpart and add reciprocal language links
• make the English edition the primary Blogs index entry while retaining direct access to Chinese

Verification

• git diff --check
• npm run check:asf-headers
• confirmed the English and Chinese editions have matching section structure
• confirmed the English body contains no untranslated Chinese text outside the language link

This is a documentation-only change; runtime tests and typecheck were not run. Biome does not process Markdown files in this repository.

AI use

Select exactly one:

• No generative tool made a substantive contribution
• Generative tooling made a substantive contribution

Tool(s) and scope: OpenAI Codex translated and edited the English article, preserved the technical boundaries of the Chinese source, and added the documentation links.

Checklist

• Tests cover the change and fail without it
• Lint, format, typecheck and the affected suites pass locally

Does this PR entail a change in behavior?

• Yes — described under Summary above
• No