community: the encrypted inbox, friend requests and shares travel sealed to a box key when the other side has published one

crates/persona-state/Cargo.toml

@@ -13,6 +13,8 @@ serde.workspace = true
 bincode = "1"
 ed25519-dalek = { version = "2", default-features = false, features = ["alloc"] }
 blake3 = "1"
+x25519-dalek = { version = "2", features = ["static_secrets"] }
+chacha20poly1305 = "0.10"
 
 [dev-dependencies]
 ed25519-dalek = { version = "2", features = ["rand_core"] }