loadShim() read EVERY account record in the shim (SELECT over the whole anchor
graph). On a shim that accumulates accounts (the shared wallet grows), that is
O(accounts) and hangs the hot path (~90s at ensureAccount → loadShim). Same
principle as per-doc reads: never scan a shared structure.
Add resolveAccount(username): a BOUNDED SELECT anchored on the single subject
accountSubject(username) → O(1), independent of account count. Cache in a
per-account Map (cleared by resetRegistryCache). Hot paths now use it:
ensureAccount (existence check), indexInboxNuri/@index (discovery), resolveInbox
Anchor, resolveWriteGraph, createEntityDoc, listMyEntityDocs. loadShim kept only
for genuine all-accounts needs (allAccounts, the listEntityDocs fan-out fallback).
The 90s ensureAccount/loadShim hang is gone. 93 tests pass; tsc rc=0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Sylvain Duchesne
c85c635f63