UI work to fill SBOM sourcing management gap. UI planning remaining functionality exposure. Work on CI/Tests stabilization

Introduces CGS determinism test runs to CI workflows for Windows, macOS, Linux, Alpine, and Debian, fulfilling CGS-008 cross-platform requirements. Updates local-ci scripts to support new smoke steps, test timeouts, progress intervals, and project slicing for improved test isolation and diagnostics.

src/Registry/AGENTS.md

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+# Registry Module Agent Charter
+
+## Roles
+- Backend engineer (Registry Token Service)
+- QA automation engineer
+- Documentation author
+
+## Required Reading
+- docs/modules/registry/architecture.md
+- docs/modules/registry/operations/token-service.md
+- docs/modules/platform/architecture-overview.md
+- docs/modules/authority/architecture.md
+
+## Working Agreements
+- Preserve offline-first posture; do not require network access for core flows.
+- Keep authorization decisions deterministic (stable plan ordering and error reasons).
+- Do not log secrets or token material; redact sensitive fields.
+- Respect Authority scope requirements and registry allowlists.
+
+## Directory Boundaries
+- Code: src/Registry/StellaOps.Registry.TokenService
+- Tests: src/Registry/__Tests/StellaOps.Registry.TokenService.Tests
+- Docs: docs/modules/registry/*
+
+## Testing Expectations
+- Add or update unit and integration tests for plan rules, scope parsing, and token issuance.
+- Maintain deterministic outputs for auditability.