[30.x] More Backports #36401

1. 
   fanquake commented at 4:35 PM on October 1, 2026: member

   Backports:

   • #36377
2. doc: add 461 (Deterministic ECDSA signatures with low-R grinding) to bips.md

   Github-Pull: #36377
   Rebased-From: d57346d682f17e6cf09f8acc5e7893ee16eec193

   528ee56171
3. doc: update 30.x release notes 0d99fb3a0d
4. fanquake added this to the milestone 30.4 on Oct 1, 2026
5. DrahtBot added the label Backport on Oct 1, 2026
6. 
   DrahtBot commented at 4:36 PM on October 1, 2026: contributor

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   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/36401.

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Milestone
30.4