fix(daemon): consume the MovieCommand channel

Nothing drained AppState's movie_commands mpsc, so manual search and
one-click grab were accepted with 202 and then did nothing until the
64-slot buffer filled and the endpoint started 503ing.

A new daemon task drains it: Search resets the movie's backoff and
runs the targeted-search + grab lane immediately; Grab sends the
already-chosen release straight to Transmission.

Closes #107

crates/arr-e2e/tests/e2e.rs

@@ -52,8 +52,9 @@ async fn daemon_runs_against_fakes_and_a_real_transmission() {
     let movie_id = movie["id"].as_i64().expect("movie id");
     assert_eq!(movie["wanted"], true);
 
-    // The manual-search trigger is accepted; its consumer is the reconcile
-    // loop (#21), so no releases materialise yet.
+    // The manual-search trigger is accepted and consumed by the daemon
+    // (issue #107), so the fixture's releases materialise across the
+    // process boundary.
     let search = reqwest::Client::new()
         .post(format!("{base}/api/movies/{movie_id}/search"))
         .send()
@@ -61,14 +62,30 @@ async fn daemon_runs_against_fakes_and_a_real_transmission() {
         .expect("trigger search");
     assert_eq!(search.status(), reqwest::StatusCode::ACCEPTED);
 
-    let releases: Vec<serde_json::Value> =
-        reqwest::get(format!("{base}/api/movies/{movie_id}/releases"))
-            .await
-            .expect("list releases")
-            .json()
-            .await
-            .expect("releases json");
-    assert!(releases.is_empty());
+    let releases: Vec<serde_json::Value> = wait_for_releases(base, movie_id).await;
+    assert_eq!(releases.len(), 2);
+    assert!(releases.iter().any(|release| release["name"]
+        .as_str()
+        .is_some_and(|name| name.contains("Dune.Part.Two.2024.2160p.WEB-DL"))));
+}
+
+/// The manual search runs on a background task, not inline with the HTTP
+/// response, so give it a moment to land instead of racing it.
+async fn wait_for_releases(base: &str, movie_id: i64) -> Vec<serde_json::Value> {
+    for _ in 0..50 {
+        let releases: Vec<serde_json::Value> =
+            reqwest::get(format!("{base}/api/movies/{movie_id}/releases"))
+                .await
+                .expect("list releases")
+                .json()
+                .await
+                .expect("releases json");
+        if !releases.is_empty() {
+            return releases;
+        }
+        tokio::time::sleep(std::time::Duration::from_millis(100)).await;
+    }
+    panic!("no releases appeared after the manual search");
 }
 
 /// The recorded fixtures satisfy the real Prowlarr and TMDB clients, so a