Add simulation_oscilloscope_trace and remove probe display_options

[seveibar]

Motivation

• The existing display_options on probes bundled graph/legend rendering with probe definitions, which conflates measurement and presentation concerns.
• Field names like label and units_per_div were unclear for an oscilloscope-style UI and units is ambiguous between volts and amps.
• Introduce an explicit object that models the relationship between a measurement (probe or transient graph) and how it should be rendered as an oscilloscope trace.

Description

• Removed display_options schemas and the display_options field from simulation_voltage_probe and simulation_current_probe, keeping probe connectivity/measurement logic unchanged.
• Added a new simulation_oscilloscope_trace Zod schema and TypeScript interface that captures display/legend/scale properties (display_name, color, volts_per_div, amps_per_div, vertical_center, vertical_offset_divs) and references to either a transient graph or a probe.
• Validation enforces that each trace references exactly one of a voltage graph, current graph, voltage probe, or current probe, and that voltage traces use volts_per_div while current traces use amps_per_div.
• Exported the new trace type from the simulation index and registered it in the any_circuit_element union, and updated tests to remove probe-level display_options checks and to add tests for the new trace object.

Testing

• Ran bun test tests/simulation_voltage_probe.test.ts tests/simulation_current_probe.test.ts tests/simulation_experiment.test.ts and all tests passed (21 pass, 0 fail).
• Ran bunx tsc --noEmit to typecheck and bun run format to format code, both completed successfully.
• Existing probe validation tests remain intact and new oscilloscope-trace tests cover valid configurations and invalid/ambiguous cases.

---

Codex Task

[seveibar]

Cc @ShiboSoftwareDev i dont like this yet but this is conceptually an api update