docs: describe batching entry points (N-04)

[md0x]

Addresses N-04 by documenting all three batching entry points, including authorization, reentrancy protection, failure isolation, and individual versus shared nonce behavior.

Validation: documentation review and 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 2026-10-02T11:17:24.893346Z	10b4d1c	PR opened

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[chrismaree]

Approved. The documentation accurately distinguishes atomic multicall, individual-permit tryMulticall, and shared-permit proposeBatch, including authorization, reentrancy protection, failure isolation, and nonce consumption.

Static review only; no builds or tests run.

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