feat(integration): add image variants section and standardize code snippets

features/api_keys_screen.qa.md

@@ -68,8 +68,8 @@ layout cases at desktop and below-md (mock `matchMedia`).
    errors clear when fixed.
 9. **Create key: name too long** - 75 characters; counter, error class and text, no request.
 10. **Create key: success** - one POST with `{"name":"Nightly media import"}` and no expires_at
-    key; the reveal: title, text, warning alert, key equal to the mocked `key`, "Copy", note, only
-    "Done".
+    key; the reveal: title, text, warning alert, key equal to the mocked `key` inside a CodeSnippet with
+    the single tab "API key", "Copy" (named "Copy code") focused on open, note, only "Done".
 11. **Create key: expiry** - date D + 30 days; assert expires_at is 23:59:59 local on that day
     with the local offset. Examples today (sent), yesterday (blocked), tomorrow (sent); build the
     dates from `new Date()` in the test.
@@ -137,7 +137,7 @@ States:
 - [ ] Create key
 - [ ] Create key: validation
 - [ ] Create key: name too long
-- [ ] One-time reveal
+- [ ] One-time reveal (re-run after the CodeSnippet migration, within 10 %)
 - [ ] One-time reveal: copied (timer-driven, so it is checked)
 - [ ] Revoke: confirm
 - [ ] Revoked (list with the revoked row and the toast)