Initial scaffold for kestrove-core

Co-Authored-By: Claude Opus 5.5 <[email protected]>

crates/kv-crypto/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "kv-crypto"
+description = "Kestrove cryptography: 2SKD, AEAD envelopes, HPKE key sealing, keysets."
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+publish.workspace = true
+
+[dependencies]
+kv-proto.workspace = true
+uuid.workspace = true
+thiserror.workspace = true
+rand_core.workspace = true
+zeroize.workspace = true
+argon2.workspace = true
+hkdf.workspace = true
+sha2.workspace = true
+chacha20poly1305.workspace = true
+hpke.workspace = true
+ed25519-dalek.workspace = true
+unicode-normalization.workspace = true