Tests fixes, audit progress, UI completions

src/Bench/StellaOps.Bench/Scanner.Analyzers/StellaOps.Bench.ScannerAnalyzers.Tests/AGENTS.md

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+# Scanner Analyzers Benchmark Tests Charter
+
+## Mission
+Own the Scanner Analyzers benchmark test suite. Validate config parsing, baseline handling, and deterministic benchmark helpers.
+
+## Responsibilities
+- Maintain `StellaOps.Bench.ScannerAnalyzers.Tests`.
+- Ensure tests remain deterministic and offline-friendly.
+- Surface open work on `TASKS.md`; update statuses (TODO/DOING/DONE/BLOCKED/REVIEW).
+
+## Key Paths
+- `BaselineLoaderTests.cs`
+- `BenchmarkJsonWriterTests.cs`
+- `BenchmarkScenarioReportTests.cs`
+- `PrometheusWriterTests.cs`
+
+## Coordination
+- Scanner analyzer owners for baseline expectations.
+- Platform guild for determinism expectations.
+
+## Required Reading
+- `docs/modules/scanner/architecture.md`
+- `docs/modules/platform/architecture-overview.md`
+
+## Working Agreement
+- 1. Update task status to `DOING`/`DONE` in both corresponding sprint file `/docs/implplan/SPRINT_*.md` and the local `TASKS.md` when you start or finish work.
+- 2. Review this charter and the Required Reading documents before coding; confirm prerequisites are met.
+- 3. Keep changes deterministic (stable ordering, timestamps, hashes) and align with offline/air-gap expectations.
+- 4. Coordinate doc updates, tests, and cross-guild communication whenever contracts or workflows change.
+- 5. Revert to `TODO` if you pause the task without shipping changes; leave notes in commit/PR descriptions for context.