Put check 1.12 back in step with the splash it describes

The progress bar went in "Take the frozen bar off the splash, and leave the line
that is true" and the manual check still told a person to watch it move, and then
to watch it stop. A check that names something not on the screen is worse than no
check: whoever runs it has to decide whether they are looking at a regression or
at a stale document, and the honest answer is not available from the page.

Says what the failure state looks like now — the line changes and nothing else on
the card is there to contradict it — and records where the bar went, so the next
reader is not left wondering whether it was lost by accident.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/manual-checks.md

@@ -256,8 +256,8 @@ registered in the capture phase, that no native menu is drawn once it is prevent
 
 Close DodoSSH and start it again. Watch the first second.
 
-**Pass:** a small panel — about 420 pixels wide, no titlebar — appears saying **DodoSSH** and *Starting…*
-with a bar moving under it, and is then replaced by the main window. Measured on a debug build against a cold
+**Pass:** a small panel — about 420 pixels wide, no titlebar — appears saying **DodoSSH** and *Starting…*,
+and is then replaced by the main window. Measured on a debug build against a cold
 profile: the panel at 668 ms, the window at 3.1 s. A release install is quicker and the shape is the same.
 What must never come back is the old behaviour, which was nothing at all on screen for the whole of it.
 
@@ -270,8 +270,12 @@ over whatever you gave up and went back to.
 *directory* where `cache.db` should be — `%LOCALAPPDATA%\DodoSSH.Nightly\cache.db` for the nightly — and
 start the application.
 
-**Pass:** the panel stays, the bar stops moving, and it reads *DodoSSH could not start:* followed by the
-reason and *Press Escape to close.* Escape closes it. Remove the directory afterwards.
+**Pass:** the panel stays and the line becomes *DodoSSH could not start:* followed by the reason and
+*Press Escape to close.* Escape closes it. Remove the directory afterwards.
+
+There is deliberately nothing else on the card to contradict that line — the progress bar this check used to
+describe was taken off in "Take the frozen bar off the splash, and leave the line that is true", because an
+indeterminate bar over a composition that had stopped was the one thing a splash must never do.
 
 **Failure means:** a panel left saying *Starting…* is the main window having failed to show with nothing
 catching it, which is the one outcome worse than the crash it replaced — `DodoSshApp.ComposeBehind` exists to