On the Constraints and Sequence steps the proposal's beside-the-fields actions
meant scrolling to save. The wizard's .step-navigation bar is now
position:sticky at the viewport bottom - the creator's sticky-bar pattern,
adapted rather than duplicated: sticky (not the creator's fixed) because the
bar lives inside the wizard's grid column, keeps its slot in the flow, and
therefore CANNOT obscure a field at any width - no padding arithmetic to get
wrong. Opaque background, top border and the shared --wp-shadow-sticky token
so content scrolling beneath it reads as beneath it.
The T4.4/B5 save-state indicator already mounted in this bar; it now rides the
viewport with the buttons, which is the "shows the save state" criterion.
Verification (each probe run alone): NEW tests/sticky_bar_check.py 12/12 - a
primary action inside the viewport on all 12 steps unscrolled at a 700px
viewport (short on purpose: both named steps genuinely overflow, asserted),
still visible fully scrolled, nothing obscured at 390px. Regression:
stepper_check ALL PASS.
Items: B6
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
