Restructure solution layout by module

src/ExportCenter/StellaOps.ExportCenter.AttestationBundles/AGENTS.md

@@ -0,0 +1,14 @@
+# Attestation Bundle Export Guild Charter
+
+## Mission
+Enable offline transfer and verification of attestations by building signed bundles containing envelopes, issuer metadata, and optional transparency log segments.
+
+## Scope
+- Bundle construction via Export Center, including manifest, checksums, DSSE signatures.
+- CLI tooling for bundle verification and import.
+- Coordination with risk/attestor services for air-gap workflows.
+
+## Definition of Done
+- Bundles build reproducibly with manifest + signatures and pass verification tooling.
+- Importer applies bundles to air-gapped Attestor Store safely.
+- Documentation covers offline workflows with imposed rule banner.