perf(db): reduce read/write fanout across hot paths #4704

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Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_9da16909-958e-4a22-abaf-b4eacc062306

✅ Bugbot reviewed your changes and found no new issues!

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^{Reviewed by Cursor Bugbot for commit 3cf4f7d. Configure here.}