Cryptext x64 0.3d - concealment refinement smoke test
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1. Click a normal letter or number.
   Expected: password bullet is appended; sensitive labels and pointer disappear
   briefly. Shift/Backspace labels remain visible.

2. Click Shift.
   Expected: pointer and Shift label remain visible; shifted labels appear
   immediately. No OS keyboard event is synthesized.

3. Click Backspace.
   Expected: pointer and Backspace label remain visible; one password character
   is removed. Armed Shift state is preserved.

4. Click Space.
   Expected: Space still uses concealment because it is password input.

5. Capture test.
   Expected: WDA_EXCLUDEFROMCAPTURE behavior remains unchanged.
