feat(core/org): org types, manifest, and X25519 key wrap/unwrap (Zeroizing KDF)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TJo44YM3UbBjro2fG6NrKy

crates/relicario-core/src/lib.rs

@@ -94,6 +94,11 @@ pub mod device;
 pub use device::{fingerprint, DeviceEntry, RevokedEntry, generate_keypair, sign, verify};
 
 pub mod org;
+pub use org::{
+    generate_org_key, unwrap_org_key, wrap_org_key,
+    CollectionDef, MemberId, OrgCollections, OrgId, OrgManifest,
+    OrgManifestEntry, OrgMember, OrgMembers, OrgMeta, OrgRole,
+};
 
 pub mod tar_safe;
 pub use tar_safe::{safe_unpack_git_archive, DEFAULT_MAX_UNCOMPRESSED};