feat: remove the 10,000-character article body limit and make the New article body optional

features/editor_core.qa.md

@@ -35,7 +35,7 @@ Fixture article (reused across cases unless a scenario overrides a field): id 12
 2. **Saved state, draft and online** — Examples-driven on `is_online`: mock `GET
    /v1/article/12` resolving 200 with the fixture at each `is_online` value; assert the
    breadcrumb, ArticleStatusBadge ("Draft"/"Online"), SaveStatus "Saved at 11:02", Save
-   disabled, PublishControl ("Publish"/"Unpublish"), and character counter "4 318 / 10 000".
+   disabled, PublishControl ("Publish"/"Unpublish"), and the neutral count ending "4,318 characters".
 3. **Unsaved changes** — from the Saved state, type into the body; assert SaveStatus "Unsaved
    changes", Save enabled, PublishControl now "Save and publish".
 4. **Saving via click and via Ctrl/⌘ S** — from Unsaved changes, (a) click Save, (b) press
@@ -53,12 +53,10 @@ Fixture article (reused across cases unless a scenario overrides a field): id 12
 9. **404 on save shows a toast, not the error SaveStatus** — from Unsaved changes, save; resolve
    `PATCH` 404; assert a toast "That article no longer exists." appears and SaveStatus never
    reads "Save failed".
-10. **Near the limit** — set the body's HTML length to 9240 (via a fixture string of that
-    length); assert counter "9 240 / 10 000" with a warning icon and Save still enabled.
-11. **Too long** — set the body's HTML length to 10214; assert counter "10 214 / 10 000" with
-    "214 characters over. Shorten the text or remove an image. Formatting counts too.", Save
-    disabled, PublishControl disabled; shorten to 10000; assert both re-enable and the over-limit
-    text disappears.
+10. **Very long body** — set the body's HTML length to 120000 (via a fixture string of that
+    length); assert the count "19,845 words · 120,000 characters" with no warning styling, Save
+    and PublishControl enabled.
+11. **No limit states** — assert no "Near the limit" or "Too long" text is ever rendered.
 12. **Preview toggle** — from a loaded article with body content, switch Preview on; assert the
     toolbar and editable surface are gone and a read-only rendering of title+body appears;
     switch off; assert the editable surface returns with the same content.
@@ -97,12 +95,11 @@ reusing the sample data below and a fixed `now` of "2026-09-26T11:02:00Z" (updat
 
 - [ ] Loading: skeletons for title, content and details, shaped like the real layout.
 - [ ] Saved: breadcrumb, "Draft" badge, "Saved at 11:02", disabled Save, "Publish", counter
-      "4 318 / 10 000", details panel (Created/Updated/ID/Images/Public API URL).
+      "N words · 4,318 characters", details panel (Created/Updated/ID/Images/Public API URL).
 - [ ] Unsaved changes: "Unsaved changes" SaveStatus, enabled Save, "Save and publish".
 - [ ] Saving: "Saving…" SaveStatus, disabled Save.
 - [ ] Save failed: "Save failed" with Retry, per the SaveStatus error spec.
-- [ ] Near the limit: counter "9 240 / 10 000" with the warning icon/style.
-- [ ] Too long: counter "10 214 / 10 000" with the over-limit text and disabled Save/Publish.
+- [ ] Very long article: count "19,845 words · 120,000 characters", neutral, Save/Publish enabled.
 - [ ] Preview: read-only rendered title and body in the content scale, toolbar hidden.
 - [ ] Offline: SaveStatus shows the wifi-off icon and reads "Waiting for connection", disabled
       Save/Publish, OfflineBanner visible.