SSE streaming with long-poll fallback; encrypted unicast profile; registry enc keys

Cargo.toml

@@ -5,18 +5,25 @@ edition = "2024"
 
 [dependencies]
 anyhow = "1.0.104"
+async-stream = "0.3.6"
 axum = "0.8.9"
+chacha20poly1305 = "0.10"
 chrono = { version = "0.4.45", default-features = false, features = ["clock", "std"] }
 clap = { version = "4.6.7", features = ["derive"] }
 ed25519-dalek = { version = "3.0.0", features = ["rand_core"] }
+futures-util = "0.3.34"
 hex = "0.4.3"
+hkdf = "0.12"
 rand = "0.8"
-reqwest = { version = "0.13.5", default-features = false, features = ["json", "rustls", "http2"] }
+reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls", "http2", "stream"] }
 serde = { version = "1.0.229", features = ["derive"] }
 serde_json = "1.0.151"
+sha2 = "0.10"
 tantivy = "0.26.2"
 tokio = { version = "1.53.1", features = ["full"] }
 toml = "1.1.6"
+x25519-dalek = { version = "2", features = ["static_secrets"] }
 
 [dev-dependencies]
+bytes = "1.12.1"
 tempfile = "3.27.0"