WaveformViewer, SchematicViewer, and SimulationLog now use CSS
variable-backed utility classes (bg-sb-surface, text-sb-muted,
border-sb-border, etc.) instead of hardcoded Tailwind slate colors.
Light mode embed theme now works through the variable system rather
than brute-force class overrides in embed-theme.css.
Repurpose the Maximize2 button in SchematicViewer as a fullscreen
toggle (was reset-zoom; percentage label is now clickable for that).
Add matching fullscreen toggle to WaveformViewer alongside the scope
button. Both use a shared useFullscreen hook for Escape-to-exit and
body scroll lock. In fullscreen mode, the SVG canvas and plot areas
fill the viewport with proper dimension tracking via ResizeObserver.
Port 465/545A visual chrome from mcltspice docs into SpiceBook as a
toggleable waveform viewer skin. uPlot chart renders inside a CRT
screen with teal phosphor traces, graticule overlay, and scanlines.
Functional knobs control trace visibility (setSeries), X/Y zoom
(setScale) in standard 1-2-5 div steps. Digital readout bar shows
current trace, div values, and analysis type. Two switchable hardware
skins — 465 tan and 545A hammertone — persisted in localStorage.
New files: ScopeWaveformViewer.tsx, scope-skin.css
Modified: WaveformViewer.tsx (toggle), waveform-utils.ts (scope
palette, 1-2-5 sequence, stack-safe min/max), globals.css (scope vars)
