The daemon never noticed when a session's command exited and tmux tore
the session down — the in-memory `SessionManager` map plus the registry
catalog kept showing it as `Running`, and a follow-up `maestro attach`
would hang on an empty broadcast.
Adds a per-host background task that polls `tmux list-sessions` every
2s, diffs against the in-memory set, and reaps anything we still track
but tmux has lost: drops the record, deletes the sidecar + FIFO,
cleans up its worktree if requested, and emits `SessionEvent::Removed`
so the registry purges its catalog.
The task holds a `Weak<Inner>` so it exits cleanly once the last
`SessionManager` clone is dropped. Skips the tmux subprocess when the
in-memory map is empty.
Completes the headless daemon stack for NAP-214.
- `config`: daemon TOML config (daemon_id, registry_url, bind_addr,
token, state_dir, worktree_root) with sensible XDG defaults.
- `jwt`: HS256 verifier; the daemon validates per-attach JWTs locally
with no callback to the registry. Also exposes `issue()` for tests.
- `pty::PtyBridge`: per-session FIFO + tokio broadcast pump. The FIFO is
opened r+w so it never sees zero writers — stays alive across
`pipe-pane` re-issues. Helper `pipe_pane_command()` builds the
`cat >> <fifo>` shell line.
- `session::SessionManager`: authoritative live-session store. Creates
worktrees (when requested), spawns tmux, mkfifo + pipe-pane, writes
sidecar; tears it all down on kill. Emits diff events on a
broadcast for the registry client. `recover()` adopts surviving
`maestro-*` tmux sessions on startup and re-pipes them.
- `registry_client::RegistryClient`: persistent outbound WS to the
registry with exponential backoff. Sends Hello → snapshot, drives a
select loop that pumps inbound CreateSession/KillSession RPCs into
the manager (replying with results), emits SessionAdded/Removed/
Updated diffs from the manager, and heartbeats every 10s.
- `attach`: axum router mounting `WS /sessions/:id/stream?token=<jwt>`.
Binary frames carry PTY bytes either way (subscribe to broadcast →
send to client; receive from client → tmux send-keys -l). Text
frames carry `ClientControl::{Resize,Ping,Pong}`.
- `bin/maestrod`: ties everything together, loads config from
`MAESTROD_CONFIG` env or `~/.config/maestrod/config.toml`,
recovers, spawns the registry client, binds the WS server.
Also adds `JwtClaims` to `maestro-protocol` so the daemon and the
future registry JWT issuer (NAP-215) agree on the wire shape.
Integration tests cover session manager round-trip + recovery + PTY
broadcast; attach endpoint JWT (bad/wrong-session/wrong-daemon),
PTY round-trip through real tmux, multi-attach broadcast, ping/pong;
registry client registration + snapshot + diff forwarding +
CreateSession RPC round-trip.
Closes NAP-214.
naps62-yolo