Implement client-side input capture (input.rs) that converts winit
WindowEvents to protocol InputMessages: keyboard via evdev keycode
mapping, pointer motion/buttons/axis. Wire into wrclient main.rs
event handler to send input over QUIC via the existing input channel.
Server-side: add inject_network_input() to WayRay state that accepts
protocol InputMessages and injects them into the Smithay seat, following
the same patterns as process_input_event for keyboard, pointer motion
with surface focus, click-to-focus, and axis scroll.
Also upgrade client frame handling to use persistent framebuffer with
XOR-diff decoding via wayray_protocol::encoding::apply_region.
Implement QUIC networking for wrsrvd (server) and wrclient (client) using
quinn over rustls with self-signed certificates. Three logical channels:
control (bidirectional), display (server->client unidirectional), and
input (client->server unidirectional).
Server runs tokio in a background thread, communicating with the compositor
via std::sync::mpsc channels. Client exposes an async connect() API that
returns a ServerConnection with methods for sending input and receiving
frames.
Key design note: quinn streams are lazily materialized -- accept_bi/
accept_uni on the peer won't resolve until data is written. The handshake
protocol accounts for this by having each side write immediately after
opening streams.
