diff --git a/server/db/sqlite/driver.ts b/server/db/sqlite/driver.ts
index af60ce331..12681f521 100644
--- a/server/db/sqlite/driver.ts
+++ b/server/db/sqlite/driver.ts
@@ -16,6 +16,8 @@ bootstrapVolume();
  * Wraps better-sqlite3 Statement to call `finalize()` immediately after
  * execution, freeing native sqlite3_stmt memory deterministically instead
  * of waiting for GC. Fixes steady off-heap growth under load (#2120).
+ * WARNING: Finalizes after first execution — incompatible with drizzle's
+ * reusable .prepare() builders. No such usage exists in this codebase.
  */
 function autoFinalizeStatement(
     stmt: BetterSqlite3.Statement
diff --git a/server/private/routers/ws/ws.ts b/server/private/routers/ws/ws.ts
index 764127df4..c01ebc9eb 100644
--- a/server/private/routers/ws/ws.ts
+++ b/server/private/routers/ws/ws.ts
@@ -414,8 +414,6 @@ const removeClient = async (
                 await redisManager.del(
                     getNodeConnectionsKey(NODE_ID, clientId)
                 );
-                // Remove Redis config version key to prevent indefinite accumulation.
-                await redisManager.del(getConfigVersionKey(clientId));
             } catch (error) {
                 logger.error(
                     "Failed to remove client from Redis tracking (cleanup will occur on recovery):",