perf: read batch payments from calldata (N-03)

[md0x]

Addresses N-03 by reading proposeBatch payments directly from calldata, avoiding an unnecessary memory copy. The external ABI and execution behavior are unchanged.

Validation: 11 existing SignedProposer batching tests passed with Solidity 0.8.30; git diff --check passed. forge fmt --check reports the same two pre-existing formatting differences as the audited base.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-02T11:16:40.218169Z	38eb19f	PR opened

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[chrismaree]

Approved. The payments array is only read, so calldata avoids the unnecessary memory copy while preserving the external ABI and intended execution behavior.

Static review only; no builds or tests run.

_{Chris's Codex agent · human-approved}