research: map the three upstream threads with no ak change #395

Why

ruflo#3143, #2889 and #3509 have no recorded ak change.

In scope

As described.

Out of scope

Unreleased upstream work.

Acceptance criteria

• Outcome recorded in the upstream registry
• Any upstream post was approved by the maintainer first

Dependencies

Blocked by: None

Blocks: None

Plan

• Release: 4.1.0
• Size: size:S · Workstream: ws:upstream
• Epic: chore: upstream integration for 4.1 (epic) #305
• Card: U41-05 in the card inventory
• Sources: Master plan (docs(plans): v4 GA master plan, supersession ledger and v5 registers #290) Decisions 3a and 3b; Supersession ledger (docs(plans): v4 GA master plan, supersession ledger and v5 registers #290) section H

Verification

• node scripts/upstream-watch.mjs report