v0.3.0 — SMU & DMM Drivers, Bug Fixes, Adversarial Tests

Key Features in v0.3.0

New Instrument Drivers

• Keithley 2400 SourceMeter (SMU): Full dual-role driver registered as both DMM and PSU
• Keysight 34461A Truevolt DMM: 6.5-digit precision multimeter with temp/cap/diode
• Digital Twin parity: Both have fully simulated counterparts

Bug Fixes

• MeasurementResult.format no longer crashes on non-numeric values
• SimulatedPowerSupply now tracks voltage and output state
• factory.is_sim_mode() now recognizes SIMULATED env value

Testing

• 27 adversarial edge-case tests added as permanent regression suite
• 126 tests total, zero regressions