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52 commits

Author SHA1 Message Date
538eccd4c6 feat(appd): implement IPC server with Unix socket and MessagePack framing
Replaces the skeleton bail with a functional IPC server.

ipc.rs — transport layer:
- Request enum: LaunchApp, TerminateApp, QueryRunning, QueryAppState.
  Serialized with serde MessagePack (rmp-serde, SCREAMING_SNAKE_CASE
  type tag).
- Response enum: LaunchAck, AppReady, RunningApps, AppState, Error.
- AppStateKind: Starting, Running, Stopping, Stopped, NotFound.
- read_frame / write_frame: async 4-byte LE length-prefixed codec over
  any AsyncRead / AsyncWrite.

main.rs — server:
- SessionRegistry: in-memory HashMap<session_id, AppStateKind> with
  monotonic ID counter; launch / terminate / running_ids / state.
- run(): creates socket parent directory, removes stale socket, binds
  UnixListener, sends sd_notify READY=1, then accept-loops with
  ctrl-c / SIGTERM shutdown. Cleans up socket on exit.
- handle_connection(): splits stream into BufReader/BufWriter, reads
  request frames, calls dispatch, writes response frames.
- dispatch(): maps Request variants to SessionRegistry operations;
  returns typed Response. Wasmtime spawning and compositor client
  deferred to later implementation.

New deps: serde (derive), rmp-serde, tokio net/io-util/sync/rt-multi-thread.
2026-03-11 08:25:55 +01:00
c7ad2116a0 feat(appd): add weft-appd skeleton crate and service unit
New crate implementing the application daemon entry point:
- crates/weft-appd/Cargo.toml: tokio (current-thread runtime), anyhow,
  sd-notify, tracing dependencies
- crates/weft-appd/src/main.rs: async run() resolves IPC socket path
  from WEFT_APPD_SOCKET or XDG_RUNTIME_DIR/weft/appd.sock; stubs for
  AppRegistry, IpcServer, CompositorClient, RuntimeSupervisor,
  CapabilityBroker, ResourceController per WEFT-OS-APPD-DESIGN.md;
  sd_notify(READY=1) to be sent after IpcServer bind + CompositorClient
  connect
- infra/systemd/weft-appd.service: Type=notify, Requires+After
  weft-compositor.service, After servo-shell.service

Also fix two winit backend issues that were present in the working tree:
- remove spurious mut on display binding (never mutated after init)
- wrap std::env::set_var in unsafe block (required since Rust 1.80)
2026-03-11 01:13:18 +01:00