docs(project-state): E4 — /posts/zh/ answers 403 (no ZH archive route), measured while publishing

docs/project-state.md

@@ -126,6 +126,9 @@ nothing has ever been syndicated, so the 53 posts only exist for people who alre
 Live ZH pages: the nav renders 「文章」→ `/zh/` (fallback; `/zh/posts/` **404s**) and 「关于」→ `/zh/` — i.e. the
 Chinese nav's *About* link is wrong even though `/zh/about/` itself returns 200 and is in the sitemap. `grep
 '/zh/about/'` finds **no inbound link anywhere on the site**, so the ZH About page is orphaned.
+⚠ Also measured 2026-10-16 while publishing four posts: **`/posts/zh/` returns 403** (not 404) while `/zh/` and every
+`/posts/zh/<slug>/` return 200 — there is no ZH post-archive route, so that path is answered by something else
+entirely (CDN/nginx, not the static build). Not a regression from the publish; it is this same missing route.
 
 - [ ] Build the `/zh/posts/` archive; point 「文章」 at it and 「关于」 at `/zh/about/`.
 - **Done when:** `/zh/posts/` 200, both ZH nav labels point at the right routes, and `/zh/about/` is reachable by clicking from `/zh/`.