robots.txt was absent at the origin, so Cloudflare served its Free-plan
Content Signals Policy placeholder — a file with no User-agent, no Sitemap
and no directives. Adds src/pages/robots.txt.ts (origin 200 → CF merges
instead of substituting) pointing at sitemap-index.xml, disallowing
/pagefind/, and expressing search=yes / ai-input=yes / ai-train=no in line
with the two-lane SEO+GEO strategy in docs/seo-reference.md. Citation
crawlers (Google-Extended, OAI-SearchBot, PerplexityBot, ClaudeBot) stay
allowed; only training-only harvesters blocked.
hreflang was never emitted despite full EN/ZH i18n: both language versions
sat in the sitemap with no cross-reference. BaseLayout gains altLocaleUrl
and emits en/zh/x-default per page; every post pair, category pair, and
landing page now cross-links.
Also adds BlogPosting JSON-LD (@id-linked to the site-wide Person node)
so Google has a rich-result-eligible node per article, and creates the
missing /zh/about/ page — the EN about page pointed its language switch at
a 404, and /about/ was the only unpaired page after hreflang landed.
- 7 categories now listed with name, blurb, post count and a
per-category terminal-style SVG illustration (CategoryArt)
- empty categories show '0 posts · coming soon' (non-link, no soft-404)
- new zh pages: /zh/categories/ index + /zh/categories/[category]/ detail
- PostList is locale-aware (zh-CN dates, zh category links)
- zh nav '分类' now points to /zh/categories/
- category detail pages get art + description header
- language switch wired both ways (EN <-> ZH)
- Add translation field to schema + auto-match by zh/ prefix
- BaseLayout accepts per-page switchHref; post page resolves translation link
- Falls back to section landing (/ or /zh/) when no translation exists
- Derive lang from folder (posts/zh/* -> zh, else en); remove lang: frontmatter
- Change post route to [...slug] to capture nested zh paths
- Add nav language switcher (EN <-> 中文) + /zh/ landing page
- Default theme to dark (light opt-in via toggle)
- Translate hello-world-zh placeholder into English intro post
- Update case study: docker-compose sample + real install gotchas (commit history)
- Add docs/project-state.md (Tier 1/2/3 backlog)
hoelee