feat(proxy): add redeem_phantoms for by-value nonce redemption - #59

Kusari Analysis Results:

✅ No Flagged Issues Detected
All values appear to be within acceptable risk parameters.

Both independent analyses are clear. The dependency analysis found no pinned version dependency changes, presenting no dependency-related security concerns. The code analysis flagged a JWT token at line 2582, but confirmed it is a synthetic test fixture with a placeholder signature ('signature-bytes'), existing inside a unit test function specifically designed to validate JWT-shaped phantom value resolution. This is a false positive with no actual credential exposure. Combined, neither analysis surfaces any legitimate security risk, and the overall risk profile remains low.

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Commit: de487e6, performed at: 2026-07-21T10:21:02Z