more audit work

src/__Libraries/StellaOps.PolicyAuthoritySignals.Contracts/AGENTS.md

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+# Policy Authority Signals Contracts Charter
+
+## Mission
+- Define stable DTO contracts for policy authority signal exchange.
+
+## Responsibilities
+- Preserve schema compatibility and deterministic serialization.
+- Validate required identifiers to avoid silent empty defaults.
+- Keep contract fields and naming aligned with policy architecture.
+
+## Required Reading
+- docs/modules/policy/architecture.md
+- docs/modules/platform/architecture-overview.md
+
+## Working Directory & Scope
+- Primary: src/__Libraries/StellaOps.PolicyAuthoritySignals.Contracts
+
+## Testing Expectations
+- Add JSON roundtrip tests and required-field validation checks.
+
+## Working Agreement
+- Update sprint status in docs/implplan/SPRINT_*.md and local TASKS.md.
+- Keep outputs deterministic and ASCII-only in comments/logs.

src/__Libraries/StellaOps.PolicyAuthoritySignals.Contracts/TASKS.md

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+# Policy Authority Signals Contracts Task Board
+
+This board mirrors active sprint tasks for this module.
+Source of truth: `docs/implplan/permament/SPRINT_20251229_049_BE_csproj_audit_maint_tests.md`.
+
+| Task ID | Status | Notes |
+| --- | --- | --- |
+| AUDIT-0097-M | DONE | Revalidated 2026-01-08; maintainability audit for PolicyAuthoritySignals.Contracts. |
+| AUDIT-0097-T | DONE | Revalidated 2026-01-08; test coverage audit for PolicyAuthoritySignals.Contracts. |
+| AUDIT-0097-A | TODO | Pending approval (revalidated 2026-01-08). |