P2-23 NativeEngine AVR IO electrical modeling tier

[Kinin-Code-Offical]

(Synced from docs/current_status/issue_ready_backlog.md)\n\n# P2-23 NativeEngine AVR IO electrical modeling tier\n\nSummary

• Area: NativeEngine AvrComponent (if authoritative)
• Deliverable: optional tier with IO impedance/leakage/clamps.

Acceptance Criteria

• Electrical IO model can be enabled/disabled (tiered).
• When enabled, IO behavior changes in expected direction (impedance, clamp).

Test Plan

• Compare a few circuits with/without tier; verify outputs within expected ranges.

Likely File Targets

• NativeEngine AvrComponent IO model

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[github-actions]

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