- Refactored View() display to a single wide row inside the LCD panel:
- Leading base indicator on the left: [BIN], [HEX], etc. (flashes on successful cycle)
- Number (or CERR) right-aligned in the remaining maximal width (spans full available inside the card)
- LCD container uses full dispW (based on terminal width) + vertical padding for visual weight
- CERR still flashes the number slot (base label remains visible on left)
- Keypad grid and hint now also respect the wide dispW and are centered under the display
- Updated docs/UI_DESIGN.md and ARCHITECTURE.md with the new integrated layout (replaced old separate two-row description and ASCII)
- Matches user request: main display spans full maximal width; base begins the main display row (e.g. [ [BIN] [ 3465... ] ] inside the panel)
This is iterative polish on the phase 3 spike. Paper trail updated.
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