[APP-3801] implement remote environments auth (#9331)

crates/remote_server/src/auth.rs

@@ -0,0 +1,39 @@
+use std::sync::Arc;
+use warpui::r#async::BoxFuture;
+type GetAuthTokenFn = dyn Fn() -> BoxFuture<'static, Option<String>> + Send + Sync;
+type RemoteServerIdentityKeyFn = dyn Fn() -> String + Send + Sync;
+
+/// App-supplied authentication context for transport-agnostic remote-server code.
+///
+/// Bearer tokens are delivered only through protocol messages. Identity keys
+/// are non-secret stable partition keys used to select the remote daemon's
+/// socket/PID directory.
+///
+/// This keeps the `remote_server` crate decoupled from app-side auth/server API
+/// types while still allowing initial connect and reconnect handshakes to fetch
+/// the current app credential.
+#[derive(Clone)]
+pub struct RemoteServerAuthContext {
+    get_auth_token: Arc<GetAuthTokenFn>,
+    remote_server_identity_key: Arc<RemoteServerIdentityKeyFn>,
+}
+
+impl RemoteServerAuthContext {
+    pub fn new(
+        get_auth_token: impl Fn() -> BoxFuture<'static, Option<String>> + Send + Sync + 'static,
+        remote_server_identity_key: impl Fn() -> String + Send + Sync + 'static,
+    ) -> Self {
+        Self {
+            get_auth_token: Arc::new(get_auth_token),
+            remote_server_identity_key: Arc::new(remote_server_identity_key),
+        }
+    }
+
+    pub fn get_auth_token(&self) -> BoxFuture<'static, Option<String>> {
+        (self.get_auth_token)()
+    }
+
+    pub fn remote_server_identity_key(&self) -> String {
+        (self.remote_server_identity_key)()
+    }
+}