feat: add analog stimulus and measurements

[ShiboSoftwareDev]

Summary

• add piecewise-linear voltage and current source waveforms
• support multidimensional parameter sweeps and scalar transient measurements
• keep measurement callbacks in TypeScript and emit conventional Circuit JSON results
• deduplicate implicit measurement probes by electrical connectivity

Dependencies

This PR intentionally remains a draft until the schema packages are merged and released:

• Add simulation waveforms and measurement results circuit-json#666
• Add analog stimulus and measurement props props#765

The current CI failures are caused by npm resolving circuit-json@0.0.455 and @tscircuit/props@0.0.602, which predate the RFC records and props. After those two releases, this PR only needs their versioned dev-dependency bumps; peer dependencies remain *.

Root cause of the probe fix

An explicit voltage probe and an implicit measurement probe could target the same SPICE vector. The later implicit metadata shadowed the explicit probe ID, so getVoltage(...) could not find the returned transient graph. Implicit probes now share connectivity keys and are omitted when an equivalent explicit probe exists.

Validation

• bun test tests/features/spice-analysis/analog-transient-measurements.test.tsx
• bun test tests/features/spice-analysis (new and assertion-based tests pass; three pre-existing ngspice SVG snapshots drift under the local engine)
• bunx tsc --noEmit
• Biome checks for all changed TypeScript files
• npm pack --dry-run: the release tarball contains AnalogMeasurement, waveform handling, and measurement-result emission
• git diff --check

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Project	Deployment	Actions	Updated (UTC)
tscircuit-core-benchmarks	Error		Jul 31, 2026 10:25am