Answer status on the socket instead of queuing it behind the worker

The worker runs one job at a time, and status was one of its jobs, so the
Docker healthcheck waited behind the startup scan (54 seconds of it after
the last deploy) and timed out at 5. Any scan or download longer than
three probes would have had a working daemon marked unhealthy. The socket
now answers status straight away; everything else still queues. A test
fills the queue and checks status comes back anyway.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TAC7sLVqfKmY6rsTLXzNgk

src/main.rs

@@ -339,14 +339,24 @@ async fn run(ctx: &Arc<Ctx>, cmd: Cmd) -> Result<()> {
         Cmd::Reap { dry_run } => reap(ctx, dry_run, true),
         Cmd::Download { enclosure } => download_one(ctx, enclosure).await,
         Cmd::Status => {
-            let (pending, downloaded) = ctx.db.counts()?;
-            let feeds = subscriptions(ctx).map(|s| s.len()).unwrap_or(0);
-            ctx.out.emit(Event::Status { feeds, pending, downloaded });
+            ctx.out.emit(status(ctx));
             Ok(())
         }
     }
 }
 
+/// The counts `ipx status` prints. A running daemon's socket answers with this directly rather
+/// than through the job queue.
+fn status(ctx: &Ctx) -> Event {
+    match ctx.db.counts() {
+        Ok((pending, downloaded)) => {
+            let feeds = subscriptions(ctx).map(|s| s.len()).unwrap_or(0);
+            Event::Status { feeds, pending, downloaded }
+        }
+        Err(e) => Event::Error { msg: format!("{e:#}") },
+    }
+}
+
 async fn daemon(
     ctx: Arc<Ctx>,
     config_path: PathBuf,
@@ -385,7 +395,12 @@ async fn daemon(
     let (tx_cmd, mut rx_cmd) = mpsc::channel::<Cmd>(64);
 
     let web = start_web(&ctx, &config_path, web_addr, &tx_cmd, &events).await?;
-    let server = tokio::spawn(ipc::serve(socket.clone(), events.clone(), tx_cmd));
+    // status is answered by the socket itself; everything else waits its turn in the queue.
+    let answer: ipc::StatusFn = {
+        let ctx = ctx.clone();
+        Arc::new(move || ctx.out.emit(status(&ctx)))
+    };
+    let server = tokio::spawn(ipc::serve(socket.clone(), events.clone(), tx_cmd, answer));
 
     // One command at a time: the queue is what keeps two scans from overlapping.
     let mut ticker = tokio::time::interval(std::time::Duration::from_secs(60));