chore(core): prune endpoint.rs and heavy deps (Phase 4)

- Delete crates/alknet-core/src/endpoint.rs (1606 lines)
- Remove pub mod endpoint from lib.rs, update doc comment
- Remove rcgen, rustls-pemfile, rustls-acme deps from Cargo.toml
- Remove acme feature
- Update fingerprint.rs doc comment references to alknet-endpoint/alknet-tls

crates/alknet-core/src/fingerprint.rs

@@ -10,9 +10,9 @@
 //!   relationship). Not used for arbitrary public APIs (those use CA
 //!   verification via `WebPkiServerVerifier`, not fingerprint pinning).
 //!
-//! Shared by the server-side endpoint (`alknet_core::endpoint`, which extracts
+//! Shared by the server-side endpoint (`alknet-endpoint`, which extracts
 //! the fingerprint from the presented client cert for `PeerEntry` resolution)
-//! and the client-side `FingerprintPinVerifier` in `alknet_call::client`
+//! and the client-side `FingerprintPinVerifier` in `alknet-tls`
 //! (which matches the server's presented cert against a pinned fingerprint).
 
 use sha2::{Digest, Sha256};

crates/alknet-core/src/lib.rs

@@ -3,13 +3,13 @@
 //! Every handler crate depends on this crate. It provides the
 //! [`ProtocolHandler`][crate::types::ProtocolHandler] trait, the
 //! [`Connection`][crate::types::Connection] wrapper, auth primitives,
-//! hot-reloadable configuration, and the [`AlknetEndpoint`][crate::endpoint::AlknetEndpoint]
-//! that dispatches incoming QUIC connections by ALPN string.
+//! hot-reloadable configuration, and transport-level credential types
+//! ([`ConnectionCredentials`][crate::credentials::ConnectionCredentials],
+//! [`RemoteIdentity`][crate::credentials::RemoteIdentity]).
 
 pub mod auth;
 pub mod config;
 pub mod credentials;
-pub mod endpoint;
 pub mod fingerprint;
 pub mod ownership;
 pub mod store;