[geota]

Add a safe wrapper around i2c_ASN1_INTEGER using the existing to_der! macro. It returns the integer's minimal signed two's-complement DER encoding, excluding the tag and length.

Includes tests for zero, sign boundaries, and integers larger than 64 bits.

[clanky-the-clanker]

✅ Approved — A small, correct safe wrapper that reuses the existing to_der! macro, with documentation and boundary-case tests; no issues found.

_{The decision is advisory: this comment never approves, blocks or requests changes on the pull request.}

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✅ All checks passed

📋 Code Quality: ✅ LGTM

The wrapper reuses the existing to_der! length-query-then-fill pattern correctly. Tests cover zero, the sign boundaries and integers larger than 64 bits.

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📝 Documentation: ✅ LGTM

The doc comment and the #[corresponds(i2c_ASN1_INTEGER)] attribute are accurate and match what the method returns.

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_{Reviewed commit: ae26780b}

[TheJokr]

clanky review