Tests fixes, audit progress, UI completions

src/Attestor/StellaOps.Attestor/StellaOps.Attestor.Tests/AGENTS.md

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+# Attestor Tests AGENTS
+
+## Purpose & Scope
+- Working directory: `src/Attestor/StellaOps.Attestor/StellaOps.Attestor.Tests/`.
+- Roles: QA automation, backend engineer.
+- Focus: unit, integration, and contract coverage for Attestor core, infrastructure, and web service.
+
+## Required Reading (treat as read before DOING)
+- `docs/modules/attestor/architecture.md`
+- `docs/modules/attestor/rekor-verification-design.md`
+- `docs/modules/platform/architecture-overview.md`
+- Relevant sprint files.
+
+## Working Agreements
+- Determinism is mandatory: fixed timestamps, stable IDs, and deterministic ordering in tests.
+- Separate unit vs integration/perf tests with explicit categories.
+- Avoid wall-clock delays; prefer FakeTimeProvider or deterministic schedulers.
+- Keep tests offline-friendly; Testcontainers belong in Integration category only.
+- Update `docs/implplan/SPRINT_*.md` and local `TASKS.md` when starting or completing work.
+
+## Testing
+- Use xUnit + FluentAssertions + TestKit; prefer deterministic fixtures.
+- Contract tests must assert a stable baseline (snapshot or explicit schema checks).

src/Attestor/StellaOps.Attestor/StellaOps.Attestor.Tests/TASKS.md

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+# Attestor Tests Task Board
+
+This board mirrors active sprint tasks for this module.
+Source of truth: `docs/implplan/SPRINT_20251229_049_BE_csproj_audit_maint_tests.md`.
+
+| Task ID | Status | Notes |
+| --- | --- | --- |
+| AUDIT-0066-M | DONE | Maintainability audit for StellaOps.Attestor.Tests. |
+| AUDIT-0066-T | DONE | Test coverage audit for StellaOps.Attestor.Tests. |
+| AUDIT-0066-A | TODO | Pending approval for changes. |