docs(08-05): record fetchguard flake resolution in deferred items

.planning/phases/08-oauth2-1-authorization-server/deferred-items.md

@@ -60,3 +60,9 @@ run; passes on every isolated run (`-count=5`) and every package-level run
 (`-count=3`). Last touched in Phase 6 (`e50e2dd`); no Phase 8 plan modifies
 `fetchguard`. Timing-sensitive streaming assertion under load. Not a Phase 8
 regression; left for a later hardening pass.
+
+**Resolution (orchestrator, after 08-05):** the flake tripped the post-wave
+gate on two of three full runs, so it was fixed in `summercms.go` commit
+`test(fetchguard): widen streaming-cap ceiling to stop flake under parallel
+runs`. The ceiling moved from 64 KiB to 1 MiB; the assertion still proves the
+client does not buffer an unbounded body (the handler would reach 8 MiB).