feat: editor write path

features/article_publishing.qa.md

@@ -50,6 +50,15 @@ Package: `test` (black-box, extending `article_test.go`).
     the valid cookie (assert `200`), then call `GET /v1/article/` with no cookie and assert the
     decoded JSON array does not contain an element with id `1`.
 
+17. Disabled language: add a fake language repo row for "es" with enabled false and seed offline
+    article 15 in lang "es". `PATCH /v1/article/15/publish` -> status `422`, body
+    `"language_disabled\n"`, article stays offline, no `UpdateIsOnline` call recorded on the fake.
+18. Seed online article 16 in lang "es" (disabled). `PATCH /v1/article/16/unpublish` -> `200`,
+    `is_online == false`. Re-seed it online, `PATCH /v1/article/16/publish` -> `200`,
+    `is_online == true`.
+19. Siblings: seed story 5 with article 10 (en, online) and article 12 (fr, offline).
+    `PATCH /v1/article/12/publish` -> `200`; article 10's `IsOnline` and `UpdatedAt` are unchanged.
+
 ## Manual verification (not exercised by the Go test)
 - SPA-visible behaviour: confirm the back-office article editor exposes a publish/unpublish
   control that calls the new endpoints and updates the visible online/offline state, against the