- style.css: add --probe2: #4a88ff
- getTheme: expose probe2
- drawCircuit: blue dots at xLoad on top+bottom wire for probe 2
- drawProbeSim: add VL trace from sim.nodeV[N] in probe2 color; include
VL in y-range; show VS/VL readouts separately
- drawProbe: add VL trace from bounce.loadEvents in probe2 color; include
VL in y-range; show VS/VL readouts separately; update title

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

- drawShuntElement: add circleFill at yB (bottom T-line connection)
- drawCircuit: add orange probe dot on bottom wire below existing top dot
- app.js: oversample 16 → 128 for smoother V(z,t) spatial profile

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

- index.html: extended load control (R/C/L/open/short), junction list div,
tau_d input, renamed TDR canvas to Probe
- style.css: junction-item, load-row, tau-d-row, unit-lbl styles
- app.js: buildSegmentInputs (N Z0 inputs + N-1 junction rows), syncModelFromInputs
(builds model.blocks with interleaved tl/shunt blocks, normalises pF/nH to SI),
getOrComputeSim (JSON-key cache), dual render() path (bounce-series vs MoC sim),
renamed el.tdr -> el.probe throughout
- render.js: drawShuntC/L/R/Short + drawShuntElement, updated drawCircuit to accept
segments/terminal/junctions/wavefronts params and draw shunt symbols in gaps between
T-line boxes, C/L terminal variants; added drawPlotSim (total V(z,t) + V+/V- per
segment), drawProbeSim (source node V vs time); renamed drawTDR -> drawProbe,
drawTDRSim -> drawProbeSim

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>