fix(server): agents can continue the same reviewer conversation#23253

fix: preserve mirrored main documentation

Merge mirrored main into fix/issue-19821

Revert "Merge commit 'a50cd989aee06ed0762e26027eadf35933eb52ac' into fix/issue-19821"

docs(orchestration): clarify active child follow-ups

Merge commit 'a50cd989aee06ed0762e26027eadf35933eb52ac' into fix/issue-19821

fix(server): agents can follow up with the same delegated child

feat(server): webhook filters fan out over arrays with a [] path wildcard

test(server): orchestration guidance distinguishes review rounds from follow-ups