fix(interpreter): prevent arithmetic overflow panics#443
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…ft, div ops - Exponentiation: clamp exponent to 0..=63, use wrapping_pow - Shifts: clamp shift amount to 0..=63, use wrapping_shl/wrapping_shr - Division/modulo: use wrapping_div/wrapping_rem (prevents i64::MIN / -1 panic) - Add/sub/mul: use wrapping_add/wrapping_sub/wrapping_mul - Unary negation: use wrapping_neg Closes #405
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Summary
Test plan
Closes #405