Restructure solution layout by module

src/SbomService/StellaOps.SbomService/AGENTS.md

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+# StellaOps.SbomService — Agent Charter
+
+## Mission
+Expose normalized SBOM projections (components, relationships, scopes, entrypoints) that downstream systems such as Cartographer, Policy Engine, and Scheduler consume. Maintain deterministic SBOM versioning, change events, and tenant-aware access patterns.
+
+## Responsibilities
+- Normalize ingest from Scanner outputs/CycloneDX/SPDX artifacts into canonical documents.
+- Provide APIs for SBOM metadata, projections, entrypoint catalogs, and version history.
+- Emit change events when SBOMs are added or updated so Cartographer and overlay workers can react.
+- Enforce Authority scopes/tenancy and deliver observability for SBOM projection latency.
+
+## Expectations
+- SBOM documents remain immutable once published; new versions append only.
+- Keep projections deterministic and schema-validated; include compliance checklists.
+- Update `TASKS.md` whenever status changes and coordinate with Cartographer/Scheduler guilds.