docs: temporary workspace restore, the admin link bubble, and Sunday's checks

wonder-ink.md: where WonderInk keeps its sign-in (Basic auth in a cookie)
and why only tabs are restored; what comes back and what never does; what
counts as use; when it is not restored; the test-only override. And the
link bubble teachers saw: WonderInk's CKEditor 5 for Admin accounts,
where a plain click on a link is an editing click by design; Viewers get
one-click links, measured on the real Saul lesson, and Wonder Ink does
not override the editor.

The manual says closing still signs you out and recent tabs come back
for two hours. testing.md has the Little Waders checklist.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

docs/manual/50-wonderink.md

@@ -61,14 +61,28 @@ the lesson. **Cancel** prints nothing.
 ## Worksheets and colouring pages
 
 Click the worksheet link in the lesson. It opens in a new tab, ready to
-read or print. A worksheet's own **−** and **+** at the top of the page
-make it bigger or smaller.
+read or print. Any other link in a lesson — a slide, a picture, a video —
+also opens in a new tab with one click, and Wonder Ink shows it straight
+away; the lesson stays open in its own tab. A worksheet's own **−** and
+**+** at the top of the page make it bigger or smaller.
 
 Worksheets you download are kept separately from everything else on the
 computer, so they never get mixed up with anything.
 
+## If Wonder Ink closes by accident
+
+Open it again. If you used it in the last two hours, **your recent tabs
+come back** — the slides, pictures and worksheets you had open, in the
+same order. Wonder Ink's own lesson tab comes back at the sign-in page:
+sign in again and open your lesson.
+
+Your password is never kept. After two hours that nobody has used Wonder
+Ink, it forgets the tabs and the next person starts with a fresh Wonder
+Ink.
+
 ## When you have finished
 
 **Close Wonder Ink at the end of your session.** Closing it signs you
 out, so the next teacher in this room starts with their own account and
-not yours.
+not yours. Your recent tabs are kept for two hours in case you need them
+again, but never your sign-in.