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Append to the probe section: the anchorless GRAPH ?g SCAN spans every named graph (O(wallet) union — the reason reads are per-doc anchored, preserved) is distinct from a constant anchored GRAPH <D> WRITE, which round-trips to the same repo (no phantom graph, verified by packages/client/e2e/). Re-verify via the harness if the broker version changes. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>