docs: dedupe the 8.10.2 release-notes entry the cherry doubled onto the branch

RELEASES.md

@@ -31,30 +31,6 @@ is sometimes cited as a 7.x removal — those methods never existed on 7.x; the
 
 ---
 
-## v8.10.2 — 2026-07-29 (metadata-only updates stop rewriting the vector record)
-
-From a production incident on a large deployment: a read-heavy sweep that bumped
-per-entity stats (metadata-only `update()` calls) saturated the disk — 5.8GB written
-in 40 minutes — because every `update()` unconditionally re-persisted the WHOLE noun
-record, unchanged vector included, fsynced.
-
-- **`update()` write granularity fixed at the core.** A metadata-only update (no new
-  `data`, `vector`, or `type`) now writes the metadata leg and index deltas ONLY —
-  the vector-bearing noun record is never rewritten. Vector-side writes and HNSW
-  reindexing still happen exactly when the vector side actually changed. Regression
-  pins: `tests/integration/update-write-granularity.test.ts`.
-- **Consumer guidance:** per-entity stat touches are now cheap, but batch them anyway
-  (one `transact()` instead of N `update()` calls) — granularity fixes the cost per
-  touch; batching fixes the count.
-- Idle VFS `PathResolver` no longer logs `NaN% hit rate` once a minute (stats log
-  only on new traffic, at debug level).
-- Native graph providers' `graph-lsm-*` storage keys are recognized as system
-  resources — the per-boot `Unknown key format` warning for them is gone.
-
-Pairs with the native accelerator's same-day patch release; adopt as one bump.
-
----
-
 ## Unreleased (natural field names stop colliding with engine internals)
 
 From a production report: sorting by a user metadata field named `level` silently