The anchorless union query (`GRAPH ?g`) scanned EVERY named graph in the local
store (the whole shared physical wallet) → O(wallet size), slow/timeouts on a
bloated wallet. Rewrite `readUnion` to run ONE ANCHORED `sparql_query` per by-need
doc (in parallel, per-doc tolerant): an anchored query is restricted to that
repo's graph, so it is O(1) per doc, INDEPENDENT of physical-wallet size. Keep the
ReadCap defense-in-depth gate.
docs/simulation.md: new "Physical wallet vs virtual wallet" section — the physical
shared wallet is a substrate that accumulates and must NEVER be enumerated/scanned;
each user's VIRTUAL wallet (the account's scope index in the shim) is the bounded
thing you enumerate ("list my documents"), then read those docs per-doc anchored.
read-model.md / nextgraph-current-state.md updated to the per-doc anchored rule.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Sylvain Duchesne
ac2b026955