Add a custom Wayland protocol (wayray_wm_v1) that allows external
window manager processes to control layout, focus, and keybindings
in the WayRay compositor, inspired by River's two-phase transaction
model.
New crates:
- wayray-wm-protocol: Wayland protocol XML + generated server/client
bindings via wayland-scanner for four interfaces (manager, window,
seat, workspace)
- wr-wm-tiling: Reference BSP tiling WM demonstrating the protocol
Compositor changes:
- WindowManager trait + WmState coordinator abstracts WM behavior
- Built-in floating WM (centered windows, click-to-focus, z-ordering)
- Protocol server with GlobalDispatch/Dispatch for all interfaces
- Hot-swap (replaced event) and crash resilience (fallback to built-in)
- new_toplevel delegates to WM instead of hardcoding 800x600 at (0,0)
- WM render phase integrated into headless frame pipeline
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.
Message types for control, display, and input channels with serde
derives. Length-prefixed postcard codec with encode/decode/framing.
Seven round-trip tests covering all message types and edge cases.
