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src/__Libraries/StellaOps.Provcache.Postgres/AGENTS.md

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+# Provcache Postgres Library Charter
+
+## Mission
+- Provide deterministic PostgreSQL persistence for Provcache entries, evidence chunks, and revocations.
+
+## Responsibilities
+- Keep EF Core mappings stable and schema-compatible.
+- Use injected TimeProvider/IGuidProvider for deterministic timestamps and IDs.
+- Validate inputs and propagate CancellationToken through database operations.
+
+## Required Reading
+- docs/modules/prov-cache/architecture.md
+- docs/modules/platform/architecture-overview.md
+
+## Working Directory & Scope
+- Primary: src/__Libraries/StellaOps.Provcache.Postgres
+
+## Testing Expectations
+- Add repository tests for upsert/delete/metrics and evidence chunk storage.
+- Validate DbContext mappings and indexes with migrations or EF Core tests.
+
+## Working Agreement
+- Update sprint status in docs/implplan/SPRINT_*.md and local TASKS.md.
+- Keep outputs deterministic and ASCII-only in comments/logs.