Implemented Worker+R2 architecture: prerender HTML to `_pages/{lang}/**/*.html.gz`, Cache→R2 serve, Worker bundle ~83KB gzip.

Date: 2026-08-12 22:30 Summary: Implemented Worker+R2 architecture: prerender HTML to _pages/{lang}/**/*.html.gz, Cache→R2 serve, Worker bundle ~83KB gzip.

[question] 根据”docs/worker+R2架构/初始思路.md“进行项目架构重构，要求不要影响现在的用户体验和seo（索引和原来构建的seo体系）（确认 R2 key：_pages/{lang}/tools/text-diff.html.gz 模式）

[try to solve] Shipped Worker + R2 three-layer cache per plan; public URLs / sitemap / hreflang / verification files / language negotiation unchanged.

Highlights:

R2 key: _pages/{lang}/…/*.html.gz (including tool pages)
Worker: Cache API → R2 gzip → ASSETS plaintext fallback; gzip via encodeBody: manual; ASSETS fallback returns identity only to avoid double compression
Tool pages prerendered at build (esbuild); Worker only uses toolSlugs.generated.ts for slug validation
Worker upload size: ~415 KiB / gzip 83 KiB (was ~9.8MB)
Scripts: prerender:tools, gzip:pages, upload:r2 / upload:r2:local; start:dev seeds local bucket by default (--no-seed-r2 to skip)
Docs: docs/worker+R2架构/design.md
Regression: home/tools/sitemap/robots/GSC/IndexNow/language 302/API/lint:seo/lint:vendor passed

Production release still needs creating the R2 bucket and running npm run upload:r2.

[actions]

docs/worker+R2架构/design.md (new); 初始思路.md links to design
wrangler.jsonc: PAGES_BUCKET, PAGES_CACHE_VERSION
src/site/r2Pages.ts, toolRegistrar.ts, toolSlugs.generated.ts; src/index.ts serves prerender
scripts: prerender-tool-pages*.mjs/ts, gzip-pages.mjs, upload-r2-pages.mjs; build-site.mjs / merge-all.mjs / package.json
ops/dev/start-dev.mjs: local R2 seed; .gitignore tool HTML and .html.gz; rules synced

Implemented Worker+R2 architecture: prerender HTML to `_pages/{lang}/**/*.html.gz`, Cache→R2 serve, Worker bundle ~83KB gzip. | Dev Logs