Keep prepared search readers warm and verify abrupt indexing recovery

AGENTS.md

@@ -42,7 +42,9 @@ readiness without completed release gates and recorded evidence.
   Keep running appropriate local checks and recording actual platform evidence.
 - Agents own assigned paths and must coordinate shared interface changes. Do not commit other agents' unfinished work.
 - Prepare indexes and the real Google query session in the background. Retain
-  warmed readers and keep keyword search usable during setup. Measure startup,
+  warmed readers and keep keyword search usable during setup. Register prepared
+  graphs before SQL activation; retain the query model/LRU across publication
+  instead of repeating warmup under the foreground mutex. Measure startup,
   actual first input, and warm p95 separately.
 - UI should belong to each OS: native typography/chrome/dialogs, themes,
   keyboard access, reduced motion and high contrast. Brief transitions must not