E (part-simulators-coverage): iterates every metadataId returned by
PartSimulationRegistry.listRegisteredParts() and asserts the
attachEvents surface is valid (no throw, unsubscribe callable). 82
parts covered automatically + 1 sanity baseline. Surfaces real Node
compat gaps — discovered servo + neopixel reach for
requestAnimationFrame, now shimmed in a beforeAll.
F (solver-determinism): 8 canonical examples run through solveInput
three times each; node voltages must agree within 1e-12. Plus a
state-leak test (solve A, solve B, solve A again — A's results must
be bit-identical). Catches RNG / residual-state regressions in the
NgSpiceNodeAdapter singleton.
Adding either a new part registration or a new canonical example
extends coverage automatically — no fixture duplication per the
test-fidelity rule.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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