more audit work

src/VexLens/__Tests/StellaOps.VexLens.Tests/AGENTS.md

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+# VexLens Tests Charter
+
+## Mission
+Validate consensus, noise-gating, and delta workflows for VexLens.
+
+## Responsibilities
+- Maintain unit tests for consensus, delta reports, and noise gating.
+- Keep fixtures deterministic and offline-friendly.
+- Track sprint tasks in `TASKS.md` and update the sprint tracker.
+
+## Key Paths
+- `Delta/DeltaReportBuilderTests.cs`
+- `NoiseGate/NoiseGateServiceTests.cs`
+
+## Required Reading
+- `docs/modules/vex-lens/architecture.md`
+- `docs/implplan/permament/SPRINT_20251229_049_BE_csproj_audit_maint_tests.md`
+
+## Working Agreement
+- 1. Use fixed TimeProvider in tests.
+- 2. Keep ordering deterministic in assertions.
+- 3. Update `TASKS.md` and sprint statuses when work changes.

src/VexLens/__Tests/StellaOps.VexLens.Tests/TASKS.md

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+# VexLens Tests 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-0778-M | DONE | Revalidated 2026-01-07 (test project). |
+| AUDIT-0778-T | DONE | Revalidated 2026-01-07. |
+| AUDIT-0778-A | DONE | Waived (test project; revalidated 2026-01-07). |
+| AUDIT-0779-M | DONE | Revalidated 2026-01-07 (duplicate entry). |
+| AUDIT-0779-T | DONE | Revalidated 2026-01-07 (duplicate entry). |
+| AUDIT-0779-A | DONE | Waived (test project; revalidated 2026-01-07). |